MPQ7200
42V, 1.2A Buck-Boost or 3A Buck
Synchronous LED Driver,
AEC-Q100 Qualified
DESCRIPTION
FEATURES
The MPQ7200 is a high-frequency, constantcurrent, buck-boost LED driver with integrated
power MOSFETs. It offers a very compact
solution to achieve up to 1.2A of continuous
output current, with excellent load and line
regulation across a wide input supply range. The
MPQ7200 can also be configured for buck mode
to provide up to 3A of constant load current.
•
Constant frequency hysteretic control provides
extremely fast transient response without loop
compensation. The switching frequency can be
fixed up to 2.3MHz in buck mode to reduce the
current ripple and improve EMI. It can also be
configured to as low as 1.15MHz for optimized
efficiency and thermal performance in buckboost mode.
•
•
•
•
•
•
•
Full protection features include over-current
protection (OCP), output over-voltage protection
(OVP) and under-voltage protection (UVP),
thermal derating (TD), and thermal shutdown
(TSD). The fault indicator outputs an active logic
low signal if a fault condition occurs.
•
The MPQ7200 requires a minimal number of
readily available, standard external components,
and is available in a space-saving QFN-19
(3mmx4mm) package.
•
•
•
•
•
Wide 6V to 42V Operating Input Voltage
Range
44mΩ/40mΩ Low RDS(ON) Internal Power
MOSFETs
High-Efficiency Synchronous Operation
Configurable 1.2A Buck-Boost Mode or 3A
Buck Mode
Configurable LED Current without Sensing
Resistor
Default 2.3MHz Switching Frequency for
Buck Mode and 1.15MHz Switching
Frequency for Buck-Boost Mode with
Spread Spectrum
PWM Dimming (Dimming Frequency from
100Hz to 2kHz)
Internal 500Hz Two-Step Dimming with
Configurable Duty Cycle
Fault Indication for LED Short (to GND and
Battery) or Open Fault, Output Over-Voltage
Protection (OVP), and Thermal Shutdown
(TSD)
Over-Current Protection (OCP) with Latch
Functionality
Configurable Thermal Derating via NTC
Remote Temperature Sensing
EMI Reduction Technique
Available in a QFN-19 (3mmx4mm)
Wettable Flank Package
Available in AEC-Q100 Grade 1
APPLICATIONS
•
•
•
•
Turn Indicator Lights
Daytime Running Lights (DRLs)
Fog Lights
Rear Lights
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.
For MPS green status, please visit the MPS website under Quality
Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
1
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL APPLICATION
VIN
IN
BST
MPQ7200
EN/DIM
INGND
SW
EN/DIM
IREF
FAULT
ISET
DUTY
VCC
NTC
AGND PGND
Figure 1: Buck-Boost Topology (RIREF ≤ 9.09kΩ)
VIN
BST
IN
MPQ7200
EN/DIM
SW
EN/DIM
VCC
IREF
ISET
FAULT
DUTY
NTC
LED+
INGND
AGND
LED-
PGND
Figure 2: Buck Topology (RIREF ≥ 14.7kΩ)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
2
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
ORDERING INFORMATION
Part Number*
MPQ7200GLE***
MPQ7200GLE-AEC1***
Package
Top Marking
MSL Rating**
QFN-19 (3mmx4mm)
See Below
1
* For Tape & Reel, add suffix -Z (e.g. MPQ7200GLE-AEC1-Z).
** Moisture Sensitivity Level Rating
*** Wettable Flank
TOP MARKING
MP: MPS prefix
Y: Year code
W: Week code
7200: First four digits of the part number
LLL: Lot number
E: Wettable flank
PACKAGE REFERENCE
TOP VIEW
NTC ISET
19
IREF
18
17
16 VCC
DUTY 1
NC
2
15 AGND
EN/DIM 3
14 INGND
VIN 4
13 VIN
PGND 5
12 PGND
PGND 6
11 PGND
BST
10
7
8
9
SW
SW
FAULT
QFN-19 (3mmx4mm)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
3
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
PIN FUNCTIONS
Pin #
Name
1
DUTY
2
NC
Description
Two-step dimming duty set. Connect a resistor (RDUTY) between DUTY and AGND to set the
duty cycle for two-step dimming (or disable two-step dimming). The two-step dimming duty cycle
can be set between 5% and 15% with 1% steps (see the Two-Step Dimming section on page 43
for more details). If the DUTY pin is shorted to ground or an open fault is detected before startup, the part latches off and FAULT is asserted.
No connection. Leave the NC pin floating.
Enable/dimming control. When the two-step dimming function is not active (RDUTY = 4.87kΩ),
pull (VEN/DIM - VINGND) above 2.5V to turn the device on; pull (VEN/DIM - VINGND) below 1.58V
for >25ms to turn the device off and reset FAULT. Apply an external clock (100Hz to 2kHz) to the
3
EN/DIM EN/DIM pin for PWM dimming. Connect the EN/DIM and VIN pins using a resistor for automatic
start-up (once VIN and VCC exceed their respective UVLO thresholds). In two-step dimming mode,
EN control and PWM dimming function is disabled. Pull EN/DIM high for 100% dimming duty; pull
it low to select dimming duty set by DUTY pin (see Table 2 on page 44 for more details).
Supply voltage. The MPQ7200 operates from a 6V to 42V input rail. Use a capacitor (CIN) to
4, 13
VIN
decouple the input rail. Connect VIN to the input rail using a wide PCB trace.
Power ground. PGND is the reference ground of the power device, including the configuration
5, 6,
PGND pins (i.e. NTC), so it requires careful consideration when designing the PCB layout. PGND can
11, 12
be used to dissipate thermal heat.
Bootstrap. Connect a capacitor between the SW and BST pins to form a floating supply across
7
BST the high-side MOSFET driver. Place a resistor between the SW pin and BST capacitor to reduce
SW voltage spikes and improve EMI performance.
Switch output. This pin is the middle point between the high-side and low-side MOSFETs.
Connect this pin using a wide trace with a small SW node to reduce noise coupling and improve
8, 9
SW
EMI.
10
14
15
16
17
18
19
Fault indicator. FAULT is an open-drain output with an internal 300kΩ pull-up resistor connected
to VIN, and a 4MΩ pull-down resistor connected to INGND. FAULT is pulled low if any of the
FAULT following faults occur: LED short, LED open, over-temperature protection (OTP), false mode
detection, and over-current protection (OCP). FAULT can be connected to VIN using a pull-up
resistor.
VIN, EN/DIM, and FAULT ground for buck-boost topologies. If using a buck topology, connect
INGND
the INGND pin to PGND or AGND.
AGND Analog ground. Logic circuit reference ground. Connect AGND and PGND with an external trace.
Internal bias supply. VCC supplies power to the internal control circuit and gate drivers. Place a
VCC ≥3µF decoupling capacitor close to VCC and connect it to ground. Considering the capacitance
derating, it is recommended to use a 10µF/10V or 16V X7R capacitor.
Mode selection and NTC reference current setting. Connect a ≤9.09kΩ resistor to IREF to set
the MPQ7200 to buck-boost mode; connect a ≥14.7kΩ resistor to IREF to set the MPQ7200 buck
mode. The IREF voltage is 0.57V. Connect a resistor (RIREF) from IREF to GND to get a reference
IREF current (0.57V / RIREF). If the IREF pin is shorted to ground or an open fault is detected, the part
latches off and asserts FAULT. In buck mode, the current on the NTC pin is 50 times that of the
reference current on IREF. In buck-boost mode, the current on the NTC pin is 5 times that of the
reference current on IREF.
LED current setting. Connect an external resistor from ISET to ground to set the average LED
ISET current. If the ISET pin is shorted to ground or an open fault is detected, the part latches off and
asserts FAULT.
Remote temperature sense. Connect NTC to a resistor or to a resistor network connected from
NTC NTC pin to PGND to configure the temperature derating starting point. The device provides
protections for the following conditions: NTC shorted to PGND, AGND, INGND, or the battery.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
4
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
θJA
θJC
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance
VIN - VPGND/AGND ..............................-0.3V to +50V
VIN - VINGND ....................................-0.3V to +50V
VINGND - VPGND/AGND .........................-0.3V to +50V
VFAULT - VINGND ...............................-0.3V to +50V
VEN/DIM - VINGND..............................-0.3V to +5.5V
VSW - VPGND/AGND -0.3V to VIN - VPGND/AGND + 0.3V
VBST ................................................... VSW + 5.5V
VNTC - VPGND/AGND ...........................-0.3V to +50V
All other pins - VPGND/AGND .............-0.3V to +5.5V
Continuous power dissipation (TA = 25°C) (2) (4)
QFN-19 (3mmx4mm) ................................. 3.9W
Junction temperature ................................150°C
Lead temperature .....................................260°C
Storage temperature ................ -65°C to +150°C
QFN-19 (3mmx4mm)
JESD51-7 ............................... 48 ...... 11°C/W (3)
EVQ7200-L-00A ..................... 32 ....... 6. °C/W (4)
ESD Ratings
Human body model (HBM) ........................ ±2kV
Charged device mode (CDM) ................. ±750V
Recommended Operating Conditions
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature, TJ (MAX), the junction-toambient thermal resistance, θJA, and the ambient temperature,
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX) - TA) / θJA. Exceeding the maximum allowable power
dissipation can cause excessive die temperature, and the
regulator may go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) Measured on JESD51-7, 4-layer PCB. The values given in this
table are only valid for comparison with other packages and
cannot be used for design purposes. These values were
calculated in accordance with JESD51-7, and simulated on a
specified JEDEC board. They do not represent the
performance obtained in an actual application, the value of θJC
shows the thermal resistance from junction-to-case bottom.
4) Measured on the MPS standard EVB for the MPQ7200, 2oz.,
4-layer PCB.
Supply voltage (VIN - VPGND) ................ 6V to 42V
LED current (ILED) buck-boost mode .. Up to 1.2A
LED current (ILED) buck mode ............... Up to 3A
Operating junction temp (TJ)…. -40°C to +150°C
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
5
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
ELECTRICAL CHARACTERISTICS
VIN = 13.5V, VEN = 2V, TJ = -40°C to +125°C, typical values are at TJ = 25°C, buck mode, unless
otherwise noted.
Parameter
Symbol
Shutdown supply
current
IIN
Quiescent supply
current
IQ
HS switch on
resistance
HSRDS(ON)
LS switch on resistance
LSRDS(ON)
Switch leakage
Peak current limit (5)
SWLKG
ILIMIT_PEAK
Condition
Min
VEN = 0V
VEN = 2V, no switching, IREF float
(excluding IREF and the NTC current)
FAULT latch
VBST-SW = 5V, RISET = 13.3kΩ
VBST-SW = 5V, RISET = 40.2kΩ
VCC = 5.2V, RISET = 13.3kΩ
VCC = 5.2V, RISET = 40.2kΩ
VEN = 0V, VSW = 13.5V, TJ = 25°C
VEN = 0V, VSW = 13.5V
RISET = 40.2kΩ
RISET = 13.3kΩ
2.65
5.3
LED current threshold
for MOSFET cutoff
ISET voltage
fSW
tON_MIN
tOFF_MIN
DMAX
EN threshold hysteresis
EN input current
30
80
μA
1.2
2
mA
2
75
150
70
140
1
5
3.65
7.3
mA
mΩ
mΩ
mΩ
mΩ
μA
μA
A
A
3.15
6.3
2000
Low-dropout mode
95
2300
55
75
98
mA
2600
80
100
15
RISET = 13.3kΩ, TJ = 25°C to 100°C
RISET = 13.3kΩ
-5%
-15%
±10%
x fSW
1.2
kHz
ns
ns
%
kHz
kHz
+5%
+15%
A
600
700
mA
0.578
0.592
0.606
V
80
180
120
220
160
260
μA
μA
0.5
1.4
5
μA
VEN_RISING VEN - VINGND
1.2
1.67
2.5
V
VEN_FALLING VEN - VINGND
1
1.58
2.2
V
8
0.2
mV
μA
μA
ILED
ILED_CUT
VISET
IISET = 45μA
ILED < ILED_CUT
ILED > ILED_CUT
ISET current threshold
for pin short fault
ISET current threshold
for pin open fault
EN rising threshold
EN falling threshold
Units
50
(5)
LED current
Max
44
85
40
80
Zero-current detection
Oscillator frequency
Minimum on time (5)
Minimum off time (5)
Maximum duty cycle (5)
Spread spectrum
frequency (5)
Spread spectrum
frequency range (5)
Typ
VEN_HYS
IEN
VEN - VINGND
VEN - VINGND = 2V
VEN - VINGND = 0V
100
2
0
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
6
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
ELECTRICAL CHARACTERISTICS (continued)
VIN = 13.5V, VEN = 2V, TJ = -40°C to +125°C, typical values are at TJ = 25°C, buck mode, unless
otherwise noted.
Parameter
Symbol
EN turn-off delay
VIN under-voltage lockout
rising threshold
VIN under-voltage lockout
falling threshold
VIN under-voltage lockout
threshold hysteresis
VCC under-voltage lockout
rising threshold
VCC under-voltage lockout
falling threshold
VCC under-voltage lockout
threshold hysteresis
VCC regulator
VCC load regulation
tEN-D-OFF
Min
Typ
Max
Units
10
25
45
ms
INUVVTH_R VIN - VINGND
5.75
6
6.25
V
INUVVTH_F VIN - VINGND
4.5
4.9
5.2
V
INUVHYS
VIN - VINGND
VCC_VTH
VCC - VAGND
4.4
4.7
5
VCC - VAGND
3.4
4.05
4.7
VCC_HYS
VCC
VCC max current ability
VCC source current ability
1.1
VCC - VAGND
ICC = 0mA
ICC = 20mA
VCC = VCC_UVLO + 100mV,
no switching
IDUTY
V
650
V
V
mV
4.9
4.7
5.1
5.3
V
V
50
80
120
mA
VCC = VCC_UVLO + 100mV, switching
(5)
DUTY source current
Condition
25
mA
IDUTY1
40
45
50
μA
IDUTY2
550
600
650
μA
VDUTY threshold maxim
IDUTY1 and IDUTY2
3.287
3.355
3.422
V
VDUTY threshold minimum (5)
IDUTY1 and IDUTY2
0.28
0.302
0.33
V
Two-step dimming
frequency (5)
Output over-voltage
threshold
Output under-voltage
threshold
500
OVVTH
16.5
18
19
V
UVVTH
0.6
1.1
1.7
V
45
100
60
120
75
150
mA
mA
25
35
40
ms
ILED_SETTING < ILED_CUT
ILED_SETTING > ILED_CUT
LED low-current threshold
FAULT assertion delay time
during start-up
FAULT assertion deglitch
time after start-up (5)
Hz
tFT-D-START
tFT-D
μs
20
10
5
30
12
50
mA
mA
FAULT pull-up resistor
100
300
500
kΩ
FAULT pull-down resistor
2000
4000
6000
kΩ
IREF current for mode
detection
200
240
280
μA
FAULT assertion low sinkcurrent capability
IFAULT_SINK
VFAULT = 12V
VFAULT = 0.2V
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
7
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
ELECTRICAL CHARACTERISTICS (continued)
VIN = 13.5V, VEN = 2V, TJ = -40°C to +125°C, typical values are at TJ = 25°C, buck mode, unless
otherwise noted.
Parameter
Symbol
Condition
VIREF threshold for mode
detection
IREF voltage
VIREF
IREF = 20µA
IREF current threshold for
pin short detection
IREF current threshold for
pin open detection
NTC source current
INTC1
INTC2
VNTC = 1.25V, IREF = 20μA
Min
Typ
Max
Units
2.6
2.7
2.8
V
0.50
0.57
0.63
V
60
90
120
μA
3
6
μA
4.5
7.6
10
μA
980
1020
1060
μA
NTC voltage for current
derating
ILED = 98% of nominal
-2.5%
1.25
+2.5%
V
ILED = 58% of nominal
-2.5%
0.65
+2.5%
V
VNTC OV threshold
VNTC1
1.8
2
2.2
V
VNTC threshold for OTP
VNTC2
0.2
0.38
0.48
V
VNTC deglitch time for OTP
VNTC = 0.3V
180
256
320
μs
VNTC UV threshold
VNTC2
0.14
0.18
0.22
V
155
170
185
°C
Thermal shutdown (5)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
8
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
ELECTRICAL CHARACTERISTICS (continued)
VIN = 13.5V, VEN = 2V, TJ = -40°C to +125°C, typical values are at TJ = 25°C, buck-boost mode, unless
otherwise noted.
Parameter
Shutdown supply current
Quiescent supply current
HS switch on resistance
LS switch on resistance
Switch leakage
Peak current limit (5)
Zero-current detection (5)
Oscillator frequency
Minimum on time (5)
Minimum off time (5)
Maximum duty cycle (5)
Spread spectrum
frequency (5)
Spread spectrum
frequency range (5)
LED current
ISET voltage
Symbol
IIN
IQ
fSW
tON_MIN
tOFF_MIN
DMAX
Min
VEN = 0V
VEN = 2V, no switching, IREF floating
(excluding IREF and the NTC current)
FAULT latch
HSRDS(ON) VBST-SW = 5V, RISET = 13.3kΩ
LSRDS(ON) VCC = 5.2V,RISET = 13.3kΩ
VEN = 0V, VSW = 13.5V, TJ = 25°C
SWLKG
VEN = 0V, VSW =13.5V
ILIMIT_PEAK
Max
Units
30
80
μA
1.2
2
mA
2
75
70
1
5
7.3
mA
mΩ
mΩ
μA
μA
A
mA
kHz
ns
ns
%
44
40
5.3
920
Low dropout
Typ
95
6.3
50
1150
55
75
98
1380
80
100
15
ILED
VISET
Power derating ratio
ISET current threshold for
pin short
ISET current threshold for
pin open
EN rising threshold
EN falling threshold
EN threshold hysteresis
Condition
RISET = 21.5kΩ, TJ = 25°C to 100°C
RISET = 21.5kΩ
RISET = 13.3kΩ, TJ = 25°C to 100°C
RISET = 13.3kΩ
IISET = 45μA
VIN = 6.6V, VISET with respect to the
nominal voltage
VIN = 5.3V, VISET with respect to the
nominal voltage
VEN_RISING VEN - VINGND
VEN_FALLING VEN - VINGND
VEN_HYS
VEN - VINGND
kHz
±10%
x fSW
0.75
kHz
-7%
+7%
-15%
+15%
-5%
1.2
+5%
-15%
+15%
0.578 0.592 0.606
A
A
V
91.5
95
98.5
%
72.5
76
79.5
%
90
110
130
μA
0.5
1.4
5
μA
1.2
1.0
1.67
1.58
2.5
2.2
V
V
100
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
mV
9
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
ELECTRICAL CHARACTERISTICS (continued)
VIN = 13.5V, VEN = 2V, TJ = -40°C to +125°C, typical values are at TJ = 25°C, buck-boost mode, unless
otherwise noted.
Parameter
Symbol
IEN
EN input current
EN turn-off delay
tEN-TD-OFF
VIN under-voltage lockout
INUVVTH_R
rising threshold
VIN under-voltage lockout
INUVVTH_F
falling threshold
VIN under-voltage lockout
INUVHYS
threshold hysteresis
VCC under-voltage lockout
VCC_VTH
rising threshold
VCC under-voltage lockout
falling threshold
VCC under-voltage lockout
threshold hysteresis
VCC regulator
VCC load regulation
VCC_HYS
VCC
VCC max current ability
VCC source current ability
IDUTY
VDUTY threshold max
VDUTY threshold min
(5)
Two-step dimming
frequency (5)
Output over-voltage
threshold
Output under-voltage
threshold
VIN load dump protection
threshold
VIN load dump protection
falling threshold
Min
10
Typ
2
0
25
Max
8
0.2
45
Units
μA
μA
ms
VIN - VINGND
5.75
6
6.25
V
VIN - VINGND
4.5
4.9
5.2
V
VIN - VINGND
1.1
4.4
4.7
5
V
VCC - VAGND
3.4
4.05
4.7
V
VCC - VAGND
ICC = 0mA
ICC = 20mA
VCC = VCC UVLO + 100mV, no switching
650
mV
4.9
4.7
5.1
5.3
V
V
50
80
120
mA
25
mA
IDUTY1
40
45
50
μA
IDUTY2
550
600
650
μA
IDUTY1 and IDUTY2
3.287 3.355 3.422
V
IDUTY1 and IDUTY2
0.28
V
0.302
0.33
500
Hz
OVVTH
VINGND - VAGND
17
18
19
V
UVVTH
VINGND - VAGND
1
1.35
1.7
V
38
40
42
V
37
39
41
V
VIN load dump protection
hysteresis
1
VINGND - VPGND > 5V
VINGND - VPGND = 1V
Output discharge current
for load dump protection
FAULT assertion delay
time during start-up
FAULT assertion deglitch
time after start-up
V
VCC - VAGND
VCC = VCC UVLO + 100mV, switching
(5)
DUTY source current
Condition
VEN = 2V
VEN = 0V
tFT-TD_START
tFT-D
V
40
20
100
45
180
90
mA
mA
25
35
40
ms
20
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
μs
10
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
ELECTRICAL CHARACTERISTICS (continued)
VIN = 13.5V, VEN = 2V, TJ = -40°C to +125°C, typical values are at TJ = 25°C, buck-boost mode, unless
otherwise noted.
Parameter
Symbol
Min
Typ
Max
Units
FAULT assertion low sink
current capability
IFAULT_SINK VFAULT = 12V
VFAULT = 0.2V
10
5
30
12
50
mA
mA
FAULT pull-up resistor
100
300
500
kΩ
FAULT pull-down resistor
2000
4000
6000
kΩ
200
240
280
μA
2.6
2.7
2.8
V
0.50
0.57
0.63
V
600
900
1200
μA
40
70
μA
IREF current for mode
detection
VIREF threshold for mode
detection
IREF voltage
VIREF
Condition
IREF = 20µA
IREF current threshold for
pin short detection
IREF current threshold for
pin open detection
NTC source current
NTC voltage for current
derating
VNTC over-voltage
threshold
VNTC threshold for OTP
VNTC deglitch time for OTP
VNTC under-voltage
threshold
Thermal shutdown (5)
INTC1
INTC2
VNTC = 1.25V, IREF = 200μA
ILED = 98% of nominal
4.5
980
-2.5%
7.6
1020
1.25
10
1060
+2.5%
μA
μA
V
ILED = 58% of nominal
-2.5%
0.65
+2.5%
V
VNTC1
1.8
2
2.2
V
VNTC2
VNTC = 0.3V
0.2
180
0.38
256
0.48
320
V
μs
VNTC2
0.14
0.18
0.22
V
155
170
185
°C
Note:
5) Not tested in production. Guaranteed by over-temperature correlation.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
11
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL CHARACTERISTICS
VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted
Quiescent Current vs.
Temperature
40
1.6
35
1.4
30
1.2
IQ (mA)
ISHDN (μA)
Shutdown Current vs.
Temperature
25
20
0.8
0.6
15
0.4
10
-50 -30 -10 10
30
50
70
-50 -30 -10 10
90 110 130
50
70
TEMPERATURE (oC)
VIN UVLO Threshold vs.
Temperature
EN UVLO Threshold vs.
Temperature
7.0
1.9
6.5
1.8
6.0
1.7
5.5
5.0
Rising
4.5
10
30
50
1.5
Rising
70
Falling
1.3
4.0
-50 -30 -10
-50 -30 -10 10 30 50 70 90 110 130
90 110 130
TEMPERATURE (oC)
TEMPERATURE (oC)
VCC UVLO Threshold vs.
Temperature
VCC Voltage vs. Temperature
5.6
5.3
5.2
5.2
4.8
VCC_UVLO (V)
5.4
5.1
5.0
4.4
4.0
I_VCC=0mA
4.9
I_VCC=20mA
90 110 130
1.6
1.4
Falling
VCC (V)
30
TEMPERATURE (oC)
VEN_UVLO (V)
VIN_UVLO (V)
1.0
Rising
3.6
Falling
3.2
4.8
-50 -30 -10 10
30
50
70
TEMPERATURE (oC)
90 110 130
-50 -30 -10 10
30
50
70
90 110 130
TEMPERATURE (oC)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
12
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL CHARACTERISTICS (continued)
VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted
Current Limit with MOSFETs
Half On vs. Temperature
7.5
3.6
7.0
3.4
6.5
3.2
ILIMIT_PEAK (A)
ILIMIT_PEAK (A)
Current Limit with MOSFETs
Fully On vs. Temperature
6.0
5.5
3.0
2.8
2.6
5.0
2.4
4.5
-50 -30 -10 10
30
50
70
-50 -30 -10 10
90 110 130
TEMPERATURE (oC)
70
90 110 130
TEMPERATURE ( C)
VISET vs. Temperature
0.8
0.8
0.7
0.7
0.6
0.6
VISET (V)
VIREF (V)
50
o
VIREF vs. Temperature
0.5
0.4
0.5
0.4
0.3
0.3
0.2
0.2
-50 -30 -10 10
30
50
70
-50 -30 -10 10
90 110 130
30
50
70
TEMPERATURE
TEMPERATURE (oC)
VNTC UV Threshold vs.
Temperature
90 110 130
(oC)
VNTC OV Threshold vs.
Temperature
2.3
0.22
2.2
0.2
2.1
VNTC_OV (V)
VNTC_UV (V)
30
0.18
0.16
0.14
2
1.9
1.8
0.12
1.7
-50 -30 -10 10
30
50
TEMPERATURE
70
(oC)
90 110 130
-50 -30 -10 10
30
50
70
90 110 130
o
TEMPERATURE ( C)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
13
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL CHARACTERISTICS (continued)
VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted
Switching Frequency vs.
Temperature
Switching Frequency vs.
Temperature
Buck-boost mode
1400
2450
1300
2350
1200
fSW (kHz)
fSW (kHz)
Buck mode
2550
2250
1100
2150
1000
2050
900
800
1950
-50 -30 -10 10
30
50
70
-50 -30 -10 10
90 110 130
70
VOUT UV Threshold vs.
Temperature
Buck mode
Buck-boost mode
1.4
1.6
1.3
1.5
1.2
1.4
VOUT (V)
VOUT (V)
50
VOUT UV Threshold vs.
Temperature
1.1
90 110 130
1.3
1.0
1.2
0.9
1.1
1
0.8
-50 -30 -10 10
30
50
70
-50 -30 -10 10
90 110 130
30
50
70
90 110 130
TEMPERATURE (oC)
TEMPERATURE (oC)
VOUT OVP Threshold vs.
Temperature
VOUT OVP Threshold vs.
Temperature
Buck mode
Buck-boost mode
20
21
19
20
18
19
VOUT (V)
VOUT (V)
30
TEMPERATURE (oC)
TEMPERATURE (oC)
17
16
18
17
16
15
15
14
-50 -30 -10 10
30
50
70
TEMPERATURE (oC)
90 110 130
-50 -30 -10 10
30
50
70
90 110 130
TEMPERATURE (oC)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
14
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
ILED Part-to-Part Variation
ILED Part-to-Part Variation
TJ = 25°C to 100°C
TJ = -40°C to +150°C
35%
PRECISION W/ PART-TO-PART
VARIATION
PRECISION W/ PART-TO-PART
VARIATION
25%
20%
700mA
15%
10%
5%
MOSFET cutoff transition
0%
-5%
-10%
700mA
-15%
-20%
-25%
25%
700mA
15%
5%
MOSFET cutoff transition
-5%
-15%
-25%
700mA
-35%
200
600
1000 1400 1800 2200 2600 3000
200
600
LED CURRENT (mA)
LED CURRENT (mA)
ILED Precision vs. Input Voltage
ILED Precision vs. Input Voltage
L = 4.7µH, ILED = 1.2A, VIN ramping up
L = 4.7µH, ILED = 1.2A, VIN ramping down
3%
2%
2%
LED CURRENT PRECISION
LED CURRENT PRECISION
3%
1%
0%
-1%
2 LEDs(VLED=6V)
-2%
1LED(VLED=3V)
-3%
1%
0%
-1%
-2%
-3%
2 LEDs(VLED=6V)
-4%
1LED(VLED=3V)
-5%
8
10
12
14
16
18
8
20
10
ILED Precision vs. Input Voltage
14
16
18
20
ILED Precision vs. Input Voltage
L = 3.3µH, ILED = 2A, VIN ramping up
L = 3.3µH, ILED = 2A, VIN ramping down
2%
2%
1%
LED CURRENT PRECISION
3%
1%
0%
-1%
1 LED(VLED=3V)
-2%
12
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
LED CURRENT PRECISION
1000 1400 1800 2200 2600 3000
2LEDs(VLED=6V)
-3%
0%
-1%
-2%
-3%
1LED(VLED=3V)
-4%
2 LEDs(VLED=6V)
-5%
8
10
12
14
INPUT VOLTAGE (V)
16
18
20
8
10
12
14
16
18
20
INPUT VOLTAGE (V)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
15
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
ILED Precision vs. Input Voltage
ILED Precision vs. Input Voltage
L = 6.8µH, ILED = 0.75A, VIN ramping up
L = 6.8µH, ILED = 0.75A, VIN ramping down
1%
2%
0%
1%
LED CURRENT PRECISION
LED CURRENT PRECISION
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
-1%
-2%
-3%
2LEDs(VLED=6V)
-4%
1 LED(VLED=3V)
-5%
0%
-1%
-2%
-3%
2 LEDs(VLED=6V)
-4%
1LED(VLED=3V)
-5%
8
10
12
14
16
18
20
8
10
INPUT VOLTAGE (V)
ILED Precision vs. Input Voltage
16
18
20
L = 10µH, ILED = 0.35A, VIN ramping down
1.5%
LED CURRENT PRECISION
3%
LED CURRENT PRECISION
14
ILED Precision vs. Input Voltage
L = 10µH, ILED = 0.35A, VIN ramping up
2%
1%
0%
-1%
2LEDs(VLED=6V)
-2%
1.0%
0.5%
0.0%
-0.5%
2 LEDs(VLED=6V)
-1.0%
1LED(VLED=3V)
1 LED(VLED=3V)
-1.5%
-3%
8
10
12
14
16
18
8
20
10
INPUT VOLTAGE (V)
14
16
18
20
ILED Precision vs. Input Voltage
L = 15µH, ILED = 0.2A, VIN ramping up
L = 15µH, ILED = 0.2A, VIN ramping down
2%
1%
1%
LED CURRENT PRECISION
2%
0%
-1%
-2%
-3%
2LEDs(VLED=6V)
-4%
12
INPUT VOLTAGE (V)
ILED Precision vs. Input Voltage
LED CURRENT PRECISION
12
INPUT VOLTAGE (V)
1 LED(VLED=3V)
-5%
0%
-1%
-2%
-3%
2 LEDs(VLED=6V)
-4%
1LED(VLED=3V)
-5%
8
10
12
14
16
INPUT VOLTAGE (V)
18
20
8
10
12
14
16
18
20
INPUT VOLTAGE (V)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
16
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
ILED Precision vs. Inductor Value
Variation
ILED Precision vs. Inductor Value
Variation
VIN = 13.5V, 1 LED (VLED = 3V)
3.0%
2%
2.0%
LED CURRENT PRECISION
LED CURRENT PRECISION
VIN = 13.5V, 2 LEDs (VLED = 6V)
3%
1%
0%
-1%
ILED=1.2A, L=4.7µH
-2%
ILED=2A, L=3.3µH
-3%
1.0%
0.0%
-1.0%
ILED=2A, L=3.3µH
-3.0%
0.7
0.8
0.9
1
1.1
1.2
1.3
0.7
RATIO TO NORMALIZED INDUCTOR
2 LEDS (VLED = 6V)
2%
0%
-1%
-2%
ILED=1.2A, L=4.7µH
ILED=0.35A, L=10µH
-5%
LED CURRENT PRECISION
1%
-40 -20 0
1
1.1
1.2
1.3
2 LEDs (VLED = 6V)
3%
-4%
0.9
ILED Precision vs. LS-FET
Temperature Sense
2%
-3%
0.8
RATIO TO NORMALIZED INDUCTOR
ILED Precision vs. HS-FET
Temperature Sense
LED CURRENT PRECISION
ILED=1.2A, L=4.7µH
-2.0%
1%
0%
-1%
-2%
-3%
ILED=1.2A, L=4.7µH
-4%
ILED=0.35A, L=10µH
-5%
20 40 60 80 100 120 140 160
-40 -20 0
20 40 60 80 100 120 140 160
TJ (oC)
o
TJ ( C)
VIN Slow Ramp Up and Down
VIN Slow Ramp Up and Down
2 LEDs (VLED = 6V), ILED = 1.2A,
VIN = 0V to 20V, 0.001V/ms
1 LED (VLED = 3V), ILED = 1.2A,
VIN = 0V to 20V, 0.001V/ms
CH3: VIN
5V/div.
CH4: ILED
0.2A/div.
CH3: VIN
5V/div.
CH4: ILED
0.2A/div.
4s/div.
4s/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
17
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, VIN = 12V, 2 LEDs in series (VLED = 6V), ILED = 3A, L = 4.7μH, fSW = 2.3MHz, with EMI
filters, TA = 25°C, unless otherwise noted. (6)
CISPR25 Class 5 Average Conducted
Emissions
CISPR25 Class 5 Peak Conducted
Emissions
150kHz to 108MHz
150kHz to 108MHz
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
PEAK CONDUCTED EMI (dBµV)
NOISE FLOOR
Frequency (MHz)
1
0.1
10
NOISE FLOOR
150kHz to 30MHz
150kHz to 30MHz
60
55
55
CISPR25 CLASS 5 LIMITS
50
50
AVERAGE RADIATED EMI (dBµV/m)
45
40
35
30
25
20
15
10
5
NOISE FLOOR
0
45
40
35
CISPR25 CLASS 5 LIMITS
30
25
20
15
10
5
0
-5
-5
-10
NOISE FLOOR
-10
-15
1
0.1
Frequency (MHz)
10
30
-15
0.1
1
Frequency (MHz)
30
10
CISPR25 Class 5 Average Radiated
Emissions
CISPR25 Class 5 Peak Radiated
Emissions
Horizontal, 30MHz to 200MHz
Horizontal, 30MHz to 200MHz
55
55
HORIZONTAL POLARIZATION
50
AVERAGE RADIATED EMI (dBµV/m)
50
PEAK RADIATED EMI (dBµV/m)
108
10
CISPR25 Class 5 Average Radiated
Emissions
60
45
Frequency (MHz)
1
0.1
CISPR25 Class 5 Peak Radiated
Emissions
PEAK RADIATED EMI (dBµV/m)
CISPR25 CLASS 5 LIMITS
AVERAGE CONDUCTED EMI (dBµV)
CISPR25 CLASS 5 LIMITS
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
5
45
40
35
30
25
0
CISPR25 CLASS 5 LIMITS
20
15
10
5
NOISE FLOOR
HORIZONTAL POLARIZATION
NOISE FLOOR
0
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
160
170
180
190
200
18
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, VIN = 12V, 2 LEDs in series (VLED = 6V), ILED = 3A, L = 4.7μH, fSW = 2.3MHz, with EMI
filters, TA = 25°C, unless otherwise noted. (6)
CISPR25 Class 5 Average Radiated
Emissions
CISPR25 Class 5 Peak Radiated
Emissions
Vertical, 30MHz to 200MHz
Vertical, 30MHz to 200MHz
55
55
VERTICAL POLARIZATION
PEAK RADIATED EMI (dBµV/m)
45
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
45
40
35
30
25
15
10
0
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
-5
200
30
CISPR25 Class 5 Peak Radiated
Emissions
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
CISPR25 Class 5 Average Radiated
Emissions
Horizontal, 200MHz to 1GHz
Horizontal, 200MHz to 1GHz
55
55
HORIZONTAL POLARIZATION
50
AVERAGE RADIATED EMI (dBµV/m)
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
NOISE FLOOR
5
HORIZONTAL POLARIZATION
50
45
PEAK RADIATED EMI (dBµV/m)
NOISE FLOOR
5
0
45
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0
-5
NOISE FLOOR
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
200
CISPR25 Class 5 Peak Radiated
Emissions
Vertical, 200MHz to 1GHz
500
600
Frequency (MHz)
700
800
900
1000
Vertical, 200MHz to 1GHz
VERTICAL POLARIZATION
VERTICAL POLARIZATION
50
45
45
AVERAGE RADIATED EMI (dBµV/m)
CISPR25 CLASS 5 LIMITS
35
30
25
20
15
10
400
55
50
40
300
CISPR25 Class 5 Average Radiated
Emissions
55
PEAK RADIATED EMI (dBµV/m)
CISPR25 CLASS 5 LIMITS
20
NOISE FLOOR
5
VERTICAL POLARIZATION
50
AVERAGE RADIATED EMI (dBµV/m)
50
NOISE FLOOR
5
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0
-5
NOISE FLOOR
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
Note:
6) The MPQ7200 buck mode EMC test results are based on the application circuit with EMI filters in Figure 10 on page 54.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
19
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Efficiency with 1 LED
2 LEDs (VLED = 6V), RBST = 0Ω,
MOSFETs cut off when ILED = 0.5A
1 LED (VLED = 3V), RBST = 0Ω,
MOSFETs cut off when ILED = 0.5A
7.0
94
93
6.0
90
90
5.0
ILED=3A
ILED=2A
ILED=1.2A
ILED=0.75A
ILED=0.5A
87
84
81
4.0
8
10
12
14
16
18
86
5.0
78
3.0
74
2.0
1.0
70
1.0
0.0
66
20
0.0
8
10
12
INPUT VOLTAGE (V)
14
16
18
20
INPUT VOLTAGE (V)
Case Temperature Rise with 2 LEDs
Case Temperature Rise with 1 LED
2 LEDs (VLED = 6V), RBST = 0Ω
MOSFETs cut off when ILED = 0.5A
1 LED (VLED = 3V), RBST = 0Ω
MOSFETs cut off when ILED = 0.5A
120
CASE TEMPERATURE RISE
(oC)
120
CASE TEMPERATURE RISE
(oC)
6.0
4.0
2.0
75
7.0
ILED=3A
ILED=2A
ILED=1.2A
ILED=0.75A
ILED=0.5A
82
3.0
78
EFFICIENCY (%)
96
POWER LOSS (W)
Efficiency with 2 LEDs
POWER LOSS (W)
EFFICIENCY (%)
Buck mode, 2 LEDs in series (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
ILED=3A
100
ILED=2A
ILED=1A
80
ILED=0.75A
60
40
20
ILED=3A
100
ILED=2A
ILED=1A
80
ILED=0.75A
60
40
20
0
0
8
10
12
14
16
18
8
20
10
12
14
16
18
20
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Steady State
Start-Up through VIN
ILED = 3A
ILED = 3A
VIN
10V/div.
CH2:
VLED+ VLED5V/div.
CH2:
VLED+ VLED5V/div.
CH3:
ILED
1A/div.
CH4: IL
1A/div.
CH1:
VSW
5V/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
400ns/div.
2ms/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
20
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
Shutdown through VIN
Start-Up through EN
ILED = 3A
ILED = 3A
VIN
10V/div.
VEN/DIM
2V/div.
CH2:
VLED+ - VLED5V/div.
CH2:
VLED+ - VLED10V/div.
CH3: ILED
2A/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
4ms/div.
1ms/div.
Shutdown through EN
PWM Dimming Steady State
ILED = 3A
Dimming frequency = 100Hz
VFAULT
10V/div.
VEN/DIM
2V/div.
CH2:
VLED+ - VLED5V/div.
CH2:
VLED+ - VLED5V/div.
CH3: ILED
2A/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
CH1: VSW
5V/div.
2μs/div.
4ms/div.
PWM Dimming in Steady State
PWM Dimming
Dimming frequency = 500Hz
Start-up through VIN
VFAULT
10V/div.
CH2:
VLED+ - VLED5V/div.
CH1:
VEN/DIM
2V/div.
CH2: VIN
10V/div.
CH3: ILED
2A/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
CH4: IL
2A/div.
VSW
10V/div.
1ms/div.
10ms/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
21
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
PWM Dimming
Two-Step Dimming
Shutdown through VIN
Steady state
VFAULT
10V/div.
CH2:
VLED+ - VLED5V/div.
CH1: VEN/DIM
2V/div.
CH2: VIN
10V/div.
CH3: ILED
2A/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
VSW
10V/div.
10ms/div.
1ms/div.
Two-Step Dimming
Two-Step Dimming
Start-up through VIN
Shutdown through VIN
CH2:
VLED+ - VLED5V/div.
VIN
10V/div.
CH2:
VLED+ - VLED5V/div.
VIN
10V/div.
CH3: ILED
2A/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
CH1: VSW
5V/div.
2ms/div.
4ms/div.
No Dimming
No Dimming
LED open start-up
LED open entry
CH2:
VFAULT
10V/div.
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH1: VSW
10V/div.
10ms/div.
40μs/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
22
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
PWM Dimming
PWM Dimming
LED open start-up
LED open entry
CH2:
VFAULT
10V/div.
CH3: VIN
10V/div.
CH3: ILED
2A/div.
CH2: VFAULT
10V/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH1: VSW
10V/div.
20ms/div.
10ms/div.
Two-Step Dimming
Two-Step Dimming
LED open start-up
LED open entry
CH2:
VFAULT
10V/div.
CH3: VIN
5V/div.
CH3: ILED
2A/div.
CH2: VFAULT
5V/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH1: VSW
10V/div.
10ms/div.
2ms/div.
No Dimming
No Dimming
LED+ short to LED- start-up
LED+ short to LED- entry
VFAULT
10V/div.
CH2:
VLED+ - VLED5V/div.
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH1: VSW
10V/div.
10ms/div.
10μs/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
23
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
PWM Dimming
PWM Dimming
LED+ short to LED- start-up
LED+ short to LED- entry
VFAULT
10V/div.
CH2:
VLED+ - VLED10V/div.
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH1: VSW
10V/div.
20ms/div.
10ms/div.
Two-Step Dimming
Two-Step Dimming
LED+ short to LED- start-up
LED+ short to LED- entry
CH2:
VFAULT
10V/div.
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH1: VSW
5V/div.
10ms/div.
2ms/div.
IREF Short Fault before IC Starts Up
IREF Open Fault before IC Starts Up
CH3: VIN
10V/div.
CH2:
VFAULT
10V/div.
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH4: IREF
2V/div.
CH1: VSW
10V/div.
CH4: IREF
2V/div.
CH1: VSW
10V/div.
10ms/div.
10ms/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
24
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
IREF Short Fault after IC Starts Up
CH2: VFAULT
10V/div.
IREF Open Fault after IC Starts Up
CH2:
VFAULT
10V/div.
CH3: ILED
2A/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
CH1: VSW
5V/div.
2μs/div.
2μs/div.
IREF Short Fault after IC Starts Up
IREF Open Fault after IC Starts Up
PWM dimming
PWM dimming
CH2: VFAULT
10V/div.
CH2:
VFAULT
10V/div.
CH3: ILED
2A/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
CH1: VSW
5V/div.
2ms/div.
2ms/div.
ISET Short Fault before IC Starts Up
ISET Open Fault before IC Starts Up
PWM dimming
PWM dimming
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH3: VIN
10V/div.
CH2:
VFAULT
10V/div.
CH4: ISET
2V/div.
CH1: VSW
10V/div.
CH4: ISET
2V/div.
CH1: VSW
10V/div.
10ms/div.
10ms/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
25
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
ISET Short Fault after IC Starts Up
CH2: VFAULT
10V/div.
ISET Open Fault after IC Starts Up
CH2:
VFAULT
10V/div.
CH3: ILED
2A/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
CH1: VSW
5V/div.
4μs/div.
4μs/div.
ISET Short Fault after IC Starts Up
ISET Open Fault after IC Starts Up
PWM dimming
PWM dimming
CH2: VFAULT
10V/div.
CH2:
VFAULT
10V/div.
CH3: ILED
2A/div.
CH3: ILED
2A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
5V/div.
CH1: VSW
5V/div.
2ms/div.
2ms/div.
DUTY Short Fault before IC Starts
Up
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
DUTY Open Fault before IC Starts
Up
CH3: VIN
10V/div.
CH2:
VFAULT
10V/div.
CH4: DUTY
2V/div.
CH1: VSW
10V/div.
CH4: DUTY
2V/div.
CH1: VSW
10V/div.
10ms/div.
10ms/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
26
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck mode, 2 LEDs (VLED = 6V), VIN = 13.5V, fSW = 2.3MHz, L = 4.7µH, TA = 25°C, unless otherwise
noted.
Incorrect Mode Detection during
VIN Start-Up
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH4: IL
5A/div.
CH1: VSW
5V/div.
10ms/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
27
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
ILED Part-to-Part Variation
ILED Part-to-Part Variation
TJ = 25°C to +100°C
TJ = -40°C to +150°C
25%
PRECISION W/ PART-TO-PART
VARIATION
PRECISION W/ PART-TO-PART
VARIATION
12.00%
9.00%
6.00%
3.00%
0.00%
-3.00%
-6.00%
-9.00%
20%
15%
10%
5%
0%
-5%
-10%
-15%
-20%
-25%
-12.00%
400
500
600
700
800
400
900 1000 1100 1200
500
ILED Precision vs. Input Voltage
900 1000 1100 1200
L = 3.3µH, ILED = 1.2A, VIN ramping down
3%
3%
2%
2%
LED CURRENT PRECISION
LED CURRENT PRECISION
800
ILED Precision vs. Input Voltage
L = 3.3µH, ILED = 1.2A, VIN ramping up
1%
0%
-1%
4 LEDs(VLED=12V)
3LEDs(VLED=9V)
-3%
1%
0%
-1%
4 LEDs(VLED=12V)
-2%
3LEDs(VLED=9V)
-3%
8
10
12
14
16
18
20
8
10
INPUT VOLTAGE (V)
12
14
16
18
20
INPUT VOLTAGE (V)
ILED Precision vs. Input Voltage
ILED Precision vs. Input Voltage
L = 6.8µH, ILED = 0.75A, VIN ramping up
L = 6.8µH, ILED = 0.75A, VIN ramping down
3%
LED CURRENT PRECISION
3%
2%
LED CURRENT PRECISION
700
LED CURRENT (mA)
LED CURRENT (mA)
-2%
600
1%
0%
-1%
3LEDs(VLED=9V)
-2%
4 LEDs(VLED=12V)
2%
1%
0%
-1%
3LEDs(VLED=9V)
-2%
4 LEDs(VLED=12V)
-3%
-3%
8
10
12
14
INPUT VOLTAGE (V)
16
18
20
8
10
12
14
16
18
20
INPUT VOLTAGE (V)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
28
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
ILED Precision vs. Input Voltage
ILED Precision vs. Input Voltage
L = 4.7µH, ILED = 1A, VIN ramping down
3%
3%
2%
2%
LED CURRENT PRECISION
LED CURRENT PRECISION
L = 4.7µH, ILED = 1A, VIN ramping up
1%
0%
-1%
4 LEDs(VLED=12V)
-2%
3LEDs(VLED=9V)
1%
0%
-1%
4 LEDs(VLED=12V)
-2%
3LEDs(VLED=9V)
-3%
-3%
8
10
12
14
16
18
8
20
10
ILED Precision vs. Input Voltage
18
20
L = 6.8µH, ILED = 0.6A, VIN ramping down
3%
3.0%
2%
2.0%
LED CURRENT PRECISION
LED CURRENT PRECISION
16
ILED Precision vs. Input Voltage
L = 6.8µH, ILED = 0.6A, VIN ramping up
1%
0%
-1%
4 LEDs(VLED=12V)
3LEDs(VLED=9V)
-3%
1.0%
0.0%
-1.0%
4 LEDs(VLED=12V)
-2.0%
3LEDs(VLED=9V)
-3.0%
8
10
12
14
16
18
20
8
10
INPUT VOLTAGE (V)
14
16
18
20
ILED Precision vs. Input Voltage
L = 10µH, ILED = 0.4A, VIN ramping up
L = 10µH, ILED = 0.4A, VIN ramping down
3%
2%
2%
LED CURRENT PRECISION
3%
1%
0%
-1%
4 LEDs(VLED=12V)
-2%
12
INPUT VOLTAGE (V)
ILED Precision vs. Input Voltage
LED CURRENT PRECISION
14
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
-2%
12
1%
0%
-1%
4 LEDs(VLED=12V)
-2%
3LEDs(VLED=9V)
3LEDs(VLED=9V)
-3%
-3%
8
10
12
14
16
INPUT VOLTAGE (V)
18
20
8
10
12
14
16
18
20
INPUT VOLTAGE (V)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
29
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
ILED Precision vs. Inductor Value
Variation
ILED Precision vs. Inductor Value
Variation
VIN = 13.5V, 3 LEDs (VLED = 9V)
3%
1%
2%
LED CURRENT PRECISION
LED CURRENT PRECISION
VIN = 13.5V, 4 LEDs (VLED = 12V)
2%
0%
-1%
ILED=1.2A, L=3.3µH
-2%
ILED=0.75A, L=6.8µH
1%
0%
-1%
ILED=1.2A, L=3.3µH
-2%
ILED=0.75A, L=6.8µH
-3%
-3%
0.7
0.8
0.9
1
1.1
1.2
0.7
1.3
RATIO TO NORMALIZED INDUCTOR
ILED Precision vs. HS-FET
Temperature Sense
1
1.1
1.2
1.3
4 LEDs (VLED = 12V)
3%
1%
2%
0%
-1%
-2%
ILED=1.2A, L=3.3µH
ILED=0.4A, L=10µH
LED CURRENT PRECISION
LED CURRENT PRECISION
4 LEDs (VLED = 12V)
-4%
0.9
ILED Precision vs. LS-FET Temperature
Sense
2%
-3%
0.8
RATIO TO NORMALIZED INDUCTOR
1%
0%
-1%
-2%
-3%
ILED=1.2A, L=3.3µH
-4%
ILED=0.4A, L=10µH
-5%
-5%
-40 -20 0
-40 -20 0
20 40 60 80 100 120 140 160
20 40 60 80 100 120 140 160
TJ (oC)
TJ (oC)
VIN Slow Ramp Up and Down
VIN Slow Ramp Up and Down
4 LEDs (VLED = 12V), ILED = 1.2A,
VIN = 0V to 20V, 0.001V/ms
3 LEDs (VLED = 9V), ILED = 1.2A,
VIN = 0V to 20V, 0.001V/ms
CH3: VIN
5V/div.
CH4: ILED
0.2A/div.
CH3: VIN
5V/div.
CH4: ILED
0.2A/div.
4s/div.
4s/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
30
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS(continued)
Buck-boost mode, VIN = 12V, 4 LEDs in series (VLED = 12V), ILED = 1.2A, L = 4.7μH, fSW = 1.15MHz,
with EMI filters, TA = 25°C, unless otherwise noted. (7)
CISPR25 Class 5 Average Conducted
Emissions
CISPR25 Class 5 Peak Conducted
Emissions
150kHz to 108MHz
150kHz to 108MHz
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
PEAK CONDUCTED EMI (dBµV)
AVERAGE CONDUCTED EMI (dBµV)
CISPR25 CLASS 5 LIMITS
NOISE FLOOR
1
0.1
Frequency (MHz)
108
10
CISPR25 CLASS 5 LIMITS
NOISE FLOOR
CISPR25 Class 5 Peak Radiated
Emissions
60
55
55
CISPR25 CLASS 5 LIMITS
50
50
45
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
108
10
150kHz to 30MHz
150kHz to 30MHz
40
35
30
25
20
15
10
5
NOISE FLOOR
45
40
35
25
20
15
10
5
0
-5
-5
-10
-10
-15
1
0.1
CISPR25 CLASS 5 LIMITS
30
0
NOISE FLOOR
-15
Frequency (MHz)
30
10
1
0.1
CISPR25 Class 5 Peak Radiated
Emissions
Frequency (MHz)
10
30
CISPR25 Class 5 Average Radiated
Emissions
Horizontal, 30MHz to 200MHz
Horizontal, 30MHz to 200MHz
55
55
HORIZONTAL POLARIZATION
50
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
NOISE FLOOR
5
HORIZONTAL POLARIZATION
50
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
Frequency (MHz)
CISPR25 Class 5 Average Radiated
Emissions
60
45
1
0.1
45
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
NOISE FLOOR
0
-5
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
160
170
180
190
200
31
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, VIN = 12V, 4 LEDs in series (VLED = 12V), ILED = 1.2A, L = 4.7μH, fSW = 1.15MHz,
with EMI filters, TA = 25°C, unless otherwise noted. (7)
CISPR25 Class 5 Average Radiated
Emissions
CISPR25 Class 5 Peak Radiated
Emissions
Vertical, 30MHz to 200MHz
Vertical, 30MHz to 200MHz
55
55
VERTICAL POLARIZATION
PEAK RADIATED EMI (dBµV/m)
45
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
45
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
NOISE FLOOR
5
VERTICAL POLARIZATION
50
AVERAGE RADIATED EMI (dBµV/m)
50
NOISE FLOOR
5
0
0
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
-5
200
30
CISPR25 Class 5 Peak Radiated
Emissions
Horizontal, 200MHz to 1GHz
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
HORIZONTAL POLARIZATION
50
45
CISPR25 CLASS 5 LIMITS
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
70
Horizontal, 200MHz to 1GHz
45
35
30
25
20
15
10
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
NOISE FLOOR
5
5
0
0
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
NOISE FLOOR
-5
200
CISPR25 Class 5 Peak Radiated
Emissions
300
400
500
600
Frequency (MHz)
700
800
900
1000
CISPR25 Class 5 Average Radiated
Emissions
Vertical, 200MHz to 1GHz
Vertical, 200MHz to 1GHz
55
55
VERTICAL POLARIZATION
50
VERTICAL POLARIZATION
50
45
CISPR25 CLASS 5 LIMITS
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
60
55
HORIZONTAL POLARIZATION
40
50
CISPR25 Class 5 Average Radiated
Emissions
55
50
40
40
35
30
25
20
15
10
NOISE FLOOR
5
45
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0
-5
NOISE FLOOR
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
Notes:
7) The MPQ7200 buck-boost mode EMC test results are based on the application circuit with EMI filters in Figure 11 on page 54.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
32
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
Efficiency with 3 LEDs
Efficiency with 4 LEDs
93
3.5
90
2.4
90
3.0
87
2.0
87
2.5
84
1.6
84
2.0
81
1.2
81
1.5
78
0.8
ILED=1.2A
ILED=1.0A
ILED=0.75A
75
72
8
10
12
14
16
18
EFFICIENCY (%)
2.8
POWER LOSS (W)
EFFICIENCY (%)
93
78
0.4
75
0.0
72
20
1.0
ILED=1.2A
ILED=1.0A
ILED=0.75A
8
10
INPUT VOLTAGE (V)
40
30
ILED=1.2A
ILED=1A
ILED=0.75A
0
12
14
16
18
20
CASE TEMPERATURE RISE (oC)
CASE TEMPERATURE RISE (oC)
50
10
18
0.0
20
4LEDs (VLED = 12V), RBST = 0Ω
60
8
16
Case Temperature Rise with 4 LEDs
3LEDs (VLED = 9V), RBST = 0Ω
10
14
0.5
INPUT VOLTAGE (V)
Case Temperature Rise with 3 LEDs
20
12
POWER LOSS (W)
4 LEDs (VLED = 12V), RBST = 0Ω
3 LEDs (VLED = 9V), RBST = 0Ω
100
90
80
70
60
50
40
30
20
10
0
INPUT VOLTAGE (V)
ILED=1.2A
ILED=1A
ILED=0.75A
8
10
12
14
16
18
20
INPUT VOLTAGE(V)
Steady State
Start-Up through VIN
ILED = 1.2A
ILED = 1.2A
VIN
10V/div.
CH2:
VLED+ - VLED10V/div.
CH2:
VLED+ VLED5V/div.
CH3: ILED
1A/div.
CH3: ILED
500mA/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
1μs/div.
2ms/div.
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
33
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
Shutdown through VIN
Start-Up through EN
ILED = 1.2A
ILED = 1.2A
VIN
5V/div.
CH2:
VLED+ - VLED10V/div.
VEN/DIM
2V/div.
CH2:
VLED+ - VLED5V/div.
CH3: ILED
1A/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
4ms/div.
1ms/div.
Shutdown through EN
PWM Dimming in Steady State
ILED = 1.2A
Dimming frequency = 100Hz
VEN/DIM
2V/div.
VFAULT
10V/div.
CH2:
VLED+ - VLED2V/div.
CH3: ILED
1A/div.
CH2:
VLED+ - VLED5V/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
4μs/div.
4ms/div.
PWM Dimming in Steady State
PWM Dimming
Dimming frequency = 500Hz
Start-up through VIN
CH2: VIN
10V/div.
CH1:
VEN/DIM
5V/div.
VFAULT
10V/div.
CH2: VEN/DIM
5V/div.
CH3: ILED
1A/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH4: IL
2A/div.
VSW
10V/div.
1ms/div.
10ms/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
34
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
PWM Dimming
Two-Step Dimming
Shutdown through VIN
Steady state
CH2: VIN
10V/div.
VFAULT
10V/div.
CH1: VEN/DIM
5V/div.
CH3: ILED
1A/div.
CH3: ILED
1A/div.
CH2:
VLED+ - VLED10V/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
VSW
10V/div.
10ms/div.
1ms/div.
Two-Step Dimming
Two-Step Dimming
Start-up through VIN
Shutdown through VIN
CH2: VIN
5V/div.
CH2: VIN
5V/div.
CH3: ILED
1A/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH1: VSW
10V/div.
2ms/div.
2ms/div.
No Dimming
No Dimming
LED open VIN start-up
LED open entry
VFAULT
10V/div.
CH3: ILED
1A/div.
CH2:
VLED+ - VLED10V/div.
CH3: VIN
5V/div.
CH1: VFAULT
5V/div.
CH2:
VLED+ - VLED10V/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH4: IL
5A/div.
VSW
20V/div.
10ms/div.
20μs/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
35
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
PWM Dimming
PWM Dimming
LED open VIN start-up
LED open entry
CH1:
VLED+ - VLED10V/div.
CH2:
VFAULT
10V/div.
CH3: VIN
10V/div.
CH1: VFAULT
10V/div.
CH2:
VLED+ - VLED10V/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
VSW
20V/div.
CH4: IL
2A/div.
VSW
20V/div.
20ms/div.
10ms/div.
Two-Step Dimming
Two-Step Dimming
LED open VIN start-up
LED open entry
CH2:
VFAULT
10V/div.
CH3: VIN
10V/div.
CH1: VFAULT
10V/div.
CH2:
VLED+ - VLED10V/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH1:
VLED+ - VLED10V/div.
CH4: IL
2A/div.
VSW
20V/div.
10ms/div.
2ms/div.
No Dimming
No Dimming
LED+ short to LED-, VIN start-up
LED+ short to LED- entry
VFAULT
10V/div.
CH2:
VLED+ - VLED10V/div.
CH3: VIN
5V/div.
CH2:
VFAULT
5V/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH4: IL
1A/div.
CH1: VSW
5V/div.
10ms/div.
40μs/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
36
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
PWM Dimming
PWM Dimming
LED+ short to LED-, VIN start-up
LED+ short to LED- entry
VFAULT
10V/div.
CH2:
VLED+ - VLED10V/div.
CH3: VIN
5V/div.
CH2: VFAULT
5V/div.
CH1: VSW
5V/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH4: IL
1A/div.
10ms/div.
10ms/div.
Two-Step Dimming
Two-Step Dimming
LED+ short to LED-, VIN start-up
LED+ short to LED- entry
CH2:
VLED+ - VLED10V/div.
CH3: VIN
5V/div.
CH2: VFAULT
5V/div.
CH1: VSW
5V/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH4: IL
1A/div.
10ms/div.
2ms/div.
IREF Short Fault before VIN StartUp
IREF Open Fault before VIN Start-Up
CH3: VIN
10V/div.
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH2:
VFAULT
10V/div.
CH4: IREF
2V/div.
CH1: VSW
10V/div.
CH4: IREF
2v/div.
CH1: VSW
10V/div.
10ms/div.
10ms/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
37
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
IREF Short Fault after VIN Start-Up
IREF Open Fault after VIN Start-Up
CH2: VFAULT
10V/div.
CH2:
VFAULT
10V/div.
CH3: ILED
1A/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH1: VSW
10V/div.
4μs/div.
10μs/div.
ISET Short Fault before VIN StartUp
ISET Open Fault before VIN Start-Up
CH3: VIN
10V/div.
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH2:
VFAULT
10V/div.
CH4: ISET
2V/div.
CH1: VSW
10V/div.
CH4: ISET
2V/div.
CH1: VSW
10V/div.
10ms/div.
10ms/div.
ISET Short Fault after VIN Start-Up
ISET Open Fault after VIN Start-Up
CH2:
VFAULT
10V/div.
CH2: VFAULT
10V/div.
CH3: ILED
1A/div.
CH3: ILED
1A/div.
CH4: IL
2A/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH1: VSW
10V/div.
2μs/div.
4μs/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
38
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Buck-boost mode, 4 LEDs (VLED = 12V), VIN = 13.5V, fSW = 1.15MHz, L = 4.7µH, TA = 25°C, unless
otherwise noted.
IDUTY Short Fault before VIN StartUp
IDUTY Open Fault before VIN StartUp
CH3: VIN
10V/div.
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH2:
VFAULT
10V/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
CH4: IL
2A/div.
CH1: VSW
10V/div.
10ms/div.
10ms/div.
Wrong Mode Detection during VIN
Start-Up
CH3: VIN
10V/div.
CH2: VFAULT
10V/div.
CH4: IL
1A/div.
CH1: VSW
10V/div.
10ms/div.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
39
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
FUNCTIONAL BLOCK DIAGRAM
IN
VCC
VIN
EN/DIM
VCC
Shutdown
Logic
INGND
ING ND
VCC
Regulator
2-Step
DIM
Bootst rap
Regulator
FAULT Low
BST
IDU TY
HS
Driver
2-Step
Dim ming
Detect ion
DUTY
0.57V
IREF
MODE
Detect ion
IREF
Osc illa tor
Consta nt
Fre quency Band-toBand Control
0.592V
ISET
Com pa rat or
On Time
Control and
Logic
Control
HSCS
MODE
(Buck/Buck-Boost)
SW
VCC
LS
Driver
VREF
LSCS
IREF
INTC
Power
Derating
NTC
ILED
-
60mA/120mA
+
3.15A/6.3A
-
HSCS
+
VIN
300kΩ
DUTY
OT
ISET
Buck
4MΩ
ING ND
+
1.35V
-
165°C
LPF
TJ
OC
Fault Indic ator
Logic
Pin
Short/Open
Detect ion
IRE F
FAULT
LC
MODE
Fault
UV/MODE
Fault
1.35V
Buck
OV
18V
AGND
BuckBoo st
PGND
Figure 1: Functional Block Diagram
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
40
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
OPERATION
The MPQ7200 is a high-frequency, synchronous
rectified, buck-boost or buck, switch-mode LED
driver with built-in power MOSFETs. It offers a
very compact solution to achieve up to 1.2A of
continuous output current in buck-boost
topologies and 3A in buck topologies, with
excellent load and line regulation across a 6V to
42V input supply range.
Fixed-Frequency Band-to-Band Control
The MPQ7200 uses fixed-frequency band-band
control and a spread spectrum technique to
reduce EMC noise. Compared to fixedfrequency PWM control, band-to-band control
offers the advantage of a simpler control loop
and faster transient response. Even without an
output capacitor, the loop is stable. Band-band
control compares the inductor current to the
internal thresholds (IBANDPEAK and IBANDVALLEY).
If the inductor current exceeds IBANDPEAK, the
high-side MOSFET (HS-FET) turns off. If the
inductor current drops below IBANDVALLEY, the HSFET turns on. (IBANDPEAK + IBANDVALLEY) / 2 is
controlled by a PID loop to regulate the LED
current. IBANDPEAK - IBANDVALLEY is controlled by a
PLL loop to regulate the switching frequency to
be 2.3MHz in buck mode or 1.15MHz in buckboost mode. If the minimum on time (tON_MIN) or
minimum off time (tOFF_MIN) are triggered, the
switching frequency is extended and the real
switching frequency is D / tON_MIN, or (1 - D) /
tOFF_MIN, where D is the required duty cycle and
tON_MIN and tOFF_MIN are both 80ns maximum.
The additional spread spectrum uses a 15kHz
modulation frequency with a triangular profile to
spread the internal oscillator frequency over a
±10% nominal switching frequency window
(1.15MHz in buck mode or 2.3MHz in buck-boost
mode).
Middle-Point Inductor Current Sense
The MPQ7200 senses the LED current by
sensing the middle point of the inductor current
(ILMID). ILMID is sensed through the HS-FET or lowside MOSFET (LS-FET) depending on the duty
cycle. ILMID is sensed through the HS-FET when
the duty cycle exceeds DTH_H (55% in buck mode
or 60% in buck-boost mode), and is sensed
through the LS-FET when the duty cycle is below
DTH_L (45% in buck mode or 40% in buck-boost
mode). A duty cycle hysteresis (DTH_HYS, 10% in
buck mode or 20% in buck-boost mode) is used
to frequently avoid the current-sense switches
between the HS-FET and LS-FET at the critical
duty cycle.
Sense FET
HS-FET Sense
LS-FET Sense
DTH_HYS
DTH_L
DTH_H
Duty
Cycle
Figure 2: Current-Sense MOSFET vs. Duty Cycle
The LED current is equal to ILMID in buck
topologies, but is equal to ILMID x VIN / (VIN + VOUT)
in buck-boost topologies.
Buck and Buck-Boost Mode Selection
The MPQ7200 can be configured to a buck or
buck-boost topology by connecting a different
resistor at the IREF pin (RIREF). The middle point
of the inductor current (ILMID) is sensed through a
sensing FET. The LED current is equal to ILMID in
buck topologies, but is equal to ILMID x VIN / (VIN +
VOUT) in buck-boost topologies.
Mode detection starts when VCC reaches its
under-voltage lockout (UVLO) threshold (4.7V).
A 240µA current source (IREF_DET) flows out of the
IREF pin to detect the resistor voltage value on
the pin when the device powers on. If the voltage
generated by IREF_DET x RIREF is below 2.6V, buckboost mode is selected. If IREF_DET x RIREF
exceeds 2.8V, buck mode is selected. This
means the corresponding RIREF for buck-boost
mode is ≤9.09kΩ and ≥14.7kΩ for buck mode.
To avoid triggering a short on IREF in buck-boost
mode, or an open fault on IREF in buck mode,
the IREF resistor should be set between 1.05kΩ
and 9.09kΩ for buck-boost mode, and between
14.7kΩ and 80.6kΩ for buck mode.
Once the detection finishes, the mode is latched
and IREF becomes 0.57V / RIREF, which is the
reference for the NTC pin current. The latched
mode signal is reset by the VCC under-voltage
lockout (UVLO) threshold, but cannot be reset by
EN/DIM going low. An internal 1MHz filter and
250µs deglitch time protect the part from false
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
41
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
mode detection caused by noise coupling at the
pin. To ensure that the detected mode is
consistent with the real topology connection, the
INGND - PGND voltage is monitored. If INGND PGND exceeds 1.35V in buck mode, or INGND
- PGND is below 1.35V in buck-boost mode
(detected as an output under-voltage condition),
the part latches off and asserts FAULT.
Internal Regulator
The 5.1V internal regulator (VCC) powers most
of the internal circuitries. VCC is ready once VIN
reaches its rising UVLO threshold, regardless of
whether EN is high or low. VCC is the reference
for PGND and AGND, but not INGND. In buckboost mode, VCC cannot have the same ground
level as INGND. In buck-boost mode, the device
takes either VIN or VINGND as the input. If (VINGND
- VPGND) < 5.1V, VCC is powered from VIN. If
(VINGND - VPGND) > 5.1V, the input of the VCC
regulator switches to VINGND to reduce power
loss.
Once the power of VCC switches to INGND, VIN
will not power VCC until VINGND - VPGND drops
below 4.8V. A small VCC capacitor causes VCC
voltage ringing, and the switch may become
unstable. To address this, a ≥3µF decoupling
ceramic capacitor should be placed close to the
VCC pin. When selecting a VCC capacitor,
consider the capacitance derating to ensure that
the real capacitance ≥3µF. It is recommended to
use a 10µF X7R capacitor with ≥10V DC rated
voltage. VCC has its own UVLO, with a 4.7V
rising and 4.05V falling threshold. In addition to
powering the internal circuitries, VCC can also
power external circuitries in the system, with a
current capability of 25mA.
Continuous Conduction Mode (CCM) and
Discontinuous Conduction Mode (DCM)
The MPQ7200 uses continuous conduction
mode (CCM) to ensure that the part works with
fixed frequency from minimum loads to full loads.
The advantage of CCM is its controllable
frequency and lower output ripple at light-load. If
IBANDVALLEY = 0A, the MPQ7200 enters
discontinuous current mode (DCM), the LS-FET
acts as an ideal diode. Select an inductor that
ensures that the part does not enter DCM, even
during power or thermal derating. Otherwise, the
LED current precision is not guaranteed.
Enable (EN) Control
When two-step dimming is not active (see the
Two-Step Dimming section on page 43), EN/DIM
is the control pin that turns the LED driver on and
off. Drive (VEN/DIM - VINGND) above 2.5V to turn the
device on; drive it below 1.58V for >25ms to turn
the device off and reset FAULT. The MPQ7200
starts thermal detection at the first positive edge
of the EN/DIM signal, which causes an about
0.9ms delay between when EN/DIM turns on and
when the device starts operating.
When two-step dimming is active, the MPQ7200
automatically turns on once VIN and VCC exceed
their respective UVLO thresholds, and EN is
configured to be the two-step dimming control
pin. Driving EN/DIM high selects a 100%
dimming duty, and driving it low selects an
adjustable dimming duty set by the DUTY pin.
EN cannot reset the FAULT pin in two-step
dimming mode.
An internal 1MΩ resistor between the EN/DIM
and INGND pins allows EN/DIM to be floated to
shut down the chip. An integrated Zener diode is
in parallel with the EN/DIM pin to clamp EN/DIM
to about 7V (see Figure 3). EN/DIM can be
connected to VIN using a pull-up resistor in both
buck mode and buck-boost mode, or to VCC in
buck mode for automatic start-up (once VIN and
VCC exceed their respective UVLO thresholds). It
is recommended to use a 100kΩ resistor to limit
the EN/DIM input current to be below 1mA.
EN/DIM
7V
1MΩ
EN/DIM
Logic
INGND
Figure 3: Internal EN/DIM Circuit
ISET
The average LED current can be configured by
connecting a resistor (RISET) at the ISET pin. The
LED current can be calculated with Equation (1):
ILED (A) = 16 / RISET (kΩ)
(1)
The nominal voltage of the ISET pin (VISET) is
0.592V. VISET can be set below 0.592V to
decrease the LED current in the event of power
derating or thermal derating.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
42
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
During the mode detection period during start-up
in buck mode, the ISET current is monitored to
detect if the LED current is set above or below
600mA. If IISET > 22.2µA during this period, the
LED current setting is detected as >600mA, and
the MOSFETs fully turn on. If the LED current
setting is detected as 2.235V in this round, twostep dimming is disabled. Then the part can be
turned on/off through EN/DIM, or can work in
normal PWM dimming by applying a dimming
signal at EN/DIM. If VDUTY < 0.302V, a pin short
fault is detected; then and the part latches off
and FAULT asserts.
170°C, or 0.18V < VNTC < 0.38V for longer than 256µs
(IISET > 120µA when ILED_SETTING < 600mA)
(IISET > 220µA when ILED_SETTING > 600mA)
ISET open fault (11)
IREF short
(11)
IREF open fault (11)
IISET < 1.4µA
IIREF > 90µA
IIREF > 900µA
IIREF < 3µA
IIREF < 40µA
DUTY open fault
(12)
VDUTY1 > 3.355V
DUTY short fault
(12)
VDUTY2 < 0.302V
Over-current protection
(OCP)
Low LED current
protection (13)
IISET > 110µA
Current limit triggered 3 consecutive times
ILED_RISIING < 82mA with a 22mA hysteresis if the
LED current is falling when ILED_SETTING < 600mA;
ILED_RISING < 166mA with a 46mA hysteresis if the
LED current is falling when ILED_SETTING > 600mA
ILED_RISING < 166mA with a
46mA hysteresis if the LED
current is falling
Notes:
8) If a fault mentioned in this table is detected, the part latches off and FAULT is asserted.
9) The FAULT pin may not work correctly if INGND - PGND is pulled below -0.3V or if an LED+ short to LED- occurs with a long cable.
10) Not applicable. If an LED- short to battery in buck-boost mode occurs, the negative voltage (VINGND-PGND) may cause damage to the IC.
11) The part latches off and FAULT asserts if the ISET or IREF pins experience a short or open fault before or after start-up.
12) The part latches off and FAULT asserts if an IDUTY pin short or open fault occurs before start-up. After start-up, an IDUTY short or open
fault cannot be detected.
13) To avoid unintentionally triggering low LED current protection, the LED current should not be set below the low LED current rising threshold.
The LED current also should not be below the low LED current rising threshold while power derating is active in buck-boost mode.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
47
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
Over-Current Protection (OCP)
The MPQ7200 has cycle-by-cycle peak current
limit protection. The inductor current is monitored
while the HS-FET is on. If the inductor current
exceeds the current limit value (about 6.3A when
the LED current is set above 600mA, and 3.15A
when the LED current is set below 600mA, the
HS-FET turns off immediately. Then the LS-FET
turns on to discharge the energy, and the
inductor current decreases. The HS-FET
remains off unless the inductor current falls to 0A,
at which point another HS-FET on cycle starts. If
the over-current (OC) condition is still present
after three consecutive retries, the part latches
off and reports a failure as the FAULT pin is
asserted.
Load Dump Protection
The MPQ7200’s internal MOSFETs have a 50V
absolute maximum rating, and a maximum 42V
operating voltage. In buck topologies, this
maximum voltage can handle load dump
conditions up to 42V.
In buck-boost topologies, the voltage difference
between VIN and PGND is the sum of the car
battery’s voltage plus the LED voltage. Under
load dump conditions, the MPQ7200 can exceed
its maximum value.
To protect the part under load dump conditions
in buck-boost mode, the MPQ7200 stops
switching if VIN - VPGND exceeds 40V. A 100mA
sink current at INGND is activated to discharge
the output voltage, so the MOSFET only detects
the VIN voltage stress. The part automatically
restarts when VIN - VPGND drops back to 39V.
Load dump protection does not always trigger a
fault, and it is not active in buck mode. Load
dump protection can reset the FAULT status
caused by other fault conditions, but it cannot
reset the MPQ7200 if the part is latched.
Power Derating
If VIN is below a specific voltage (typically 7V) in
buck-boost mode, the power derating starts. The
LED current drops linearly with VIN due to analog
dimming. Derating continues until VIN reaches
the under-voltage lockout (UVLO) threshold,
then the LED current drops by 29% . During
start-up, power derating is enabled in buck-boost
mode. Power derating is always disabled in buck
mode.
NTC Thermal Derating
Connect an NTC resistor network to the NTC pin
to reduce the output current via analog dimming.
This is especially useful when the sensed
temperature exceeds the configured value. The
LED current drops as the temperature rises. The
activation of NTC and the dimming ratio are
determined by the three-step NTC voltage (VNTC)
detection (see Figure 5).
INTC
250µs
5 or 50 x
IREF
250µs
400µs
INTC2
7.6µA
INTC1
VNTC
VNTC2
VNTC1
t1
t2
t3
Open
Detection
Short
Detection
VNTC Sense for
Thermal Derating
Figure 5: INTC Timing
At t1 and t2, the voltage on the NTC pin is
detected to determine if the NTC is enabled. t1
and t2 both last for 250µs. At t3, VNTC is sensed.
The dimming ratio is generated at the end of t3.
t3 lasts for 400µs.
During t1, the detection current (INTC1) is 7.6µA;
during t2, it is 50 times IREF (in buck mode) or 5
(in buck-boost mode) times IREF (INTC2). To
activate NTC thermal derating, the NTC voltage
should be below 2V (with a 0.7A. Select IL to exceed
20% of the inductor average current when ILED <
0.7A. IL_AVG can be calculated with Equation (6):
IL _ AVG = ILED (1 +
VOUT
)
VIN
(6)
are highly recommended because of their low
ESR and small temperature coefficients.
For most applications, use a 4.7µF to 22µF
capacitor. The input capacitor can be electrolytic,
tantalum, or ceramic. When using electrolytic or
tantalum capacitors, it is strongly recommended
to use an additional lower-value capacitor (e.g.
0.1µF) with a small package size (0603) to
absorb high-frequency switching noise. Place
the smaller capacitor as close to VIN and GND
(INGND = PGND in buck mode, for both INGND
and PGND in buck-boost mode) as possible.
Since CIN absorbs the input switching current in
buck mode, the device requires an adequate
ripple current rating. The RMS current in the
input capacitor can be estimated with Equation
(8):
ICIN = ILOAD
ΔI L
2
(7)
Under light-load conditions, use a larger-value
inductor to improve efficiency and current
precision. Table 6 lists the recommended
inductor values for common ILED currents in buckboost mode.
Table 6: Buck-Boost Mode Inductor Values for
Common ILED Currents
Recommend
ILED (A)
Inductor Value (µH)
(1A, 1.2A]
3.3
(0.8A, 1A]
4.7
(0.6A, 0.8A]
6.8
[0.4A,0.6A]
10
Selecting the Input Capacitor
The device has a discontinuous input current in
both buck and buck-boost mode, and requires a
capacitor to supply AC current to the converter
while maintaining the DC input voltage. For the
best performance, use low-ESR capacitors.
Ceramic capacitors with X5R or X7R dielectrics
(8)
The worst-case condition occurs at VIN = 2VOUT,
calculated with Equation (9):
The peak inductor current can be calculated with
Equation (7):
IL_PEAK = IL_AVG +
VOUT
V
(1 − OUT )
VIN
VIN
ICIN =
ILOAD
2
(9)
For simplification, choose an input capacitor with
an RMS current rating greater than half of the
maximum load current. The input voltage ripple
caused by the capacitance can be estimated
with Equation (10):
VIN =
ILOAD
V
V
OUT (1 − OUT )
fSW CIN
VIN
VIN
(10)
If IBANDVALLEY ≥ ILED in buck-boost mode, the
capacitance can be calculated with Equation
(11):
ΔVIN =
ILED VOUT
(VIN + VOUT ) fSW CIN
(11)
In buck-boost mode, consider the capacitor
between VIN and PGND for VCC regulator
stability and improved EMC performance. If
(VINGND - VPGND) > 5.1V, the input of the VCC
regulator switches to VINGND to reduce power
loss. Place a 0.44µF to 1.2µF ceramic capacitor
between VIN and PGND to stabilize VCC when
the VCC charging source changes from VIN to
INGND. Two symmetric (0.1µF + 0.47µF) / 50V
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
51
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
X7R ceramic capacitors can be placed between
VIN and PGND.
Selecting the Output Capacitor
The output capacitor maintains the DC output
voltage. Ceramic, tantalum, or low-ESR
electrolytic capacitors are recommended. For
the best results, use low-ESR capacitors to keep
the output voltage ripple low.
In buck mode, the output voltage ripple can be
estimated with Equation (12):
ΔVOUT =
VOUT
V
1
(1 - OUT ) (RESR +
) (12)
fSW L
VIN
8 fsw COUT
Where L is the inductor value, and RESR is the
equivalent series resistance (ESR) value of the
output capacitor.
For ceramic capacitors, the capacitance
dominates the impedance at the switching
frequency, and the capacitance causes the
majority of the output voltage ripple. For
simplification, the output voltage ripple can be
estimated with Equation (13):
VOUT =
VOUT
V
(1 − OUT ) (13)
8 fSW L COUT
VIN
2
For tantalum or electrolytic capacitors, the ESR
dominates the impedance at the switching
frequency. For simplification, the output ripple
can be estimated with Equation (14):
VOUT =
VOUT
V
(1 − OUT ) RESR
fSW L
VIN
(14)
If IBANDVALLEY ≥ ILED in buck-boost applications, the
output capacitor can be calculated with Equation
(15):
ΔVOUT = ILED (RESR +
VOUT
) (15)
fsw COUT (VIN + VOUT )
For tantalum or electrolytic capacitors, the ESR
dominates the impedance at the switching
frequency. For simplification, the output ripple
can be estimated with Equation (16):
ΔVOUT = ILED RESR
(16)
A 10µF to 22µF ceramic capacitor is sufficient for
most applications. Two symmetric 4.7µF/25V
X7R ceramic capacitors can be placed between
LED+ and LED-.
Selecting the Diode from PGND to INGND in
Buck-Boost Mode
If the device is operating in buck-boost mode,
place a Schottky diode between INGND and
PGND to direct the charge current of the
capacitor connected between VIN and PGND,
especially when the VIN slew rate is high. When
(VINGND - VPGND) < 5.1V, VCC is powered by VIN.
The VCC charge current flows from the VCC
capacitor to PGND, then back to INGND and
then the car battery. For this application, it is
recommended to use a Schottky diode with a low
forward voltage (VF) of about 0.32V, with a 1A
current rating and >20V VRRM voltage. A
PMEG2010EPAS
Schottky
diode
is
recommended.
Selecting the VCC Capacitor
A small VCC capacitor causes ringing on VCC,
and makes the MOSFET unstable. It is
recommended to place a ≥3µF decoupling
ceramic capacitor at the VCC pin. When
selecting a capacitor, consider the capacitance
derating to ensure that the real capacitance is at
least 3µF. A 10µF X7R with a ≥10V DC rated
voltage capacitor is recommend. VCC is the
reference to PGND/AGND.
Selecting the BST Resistor and Capacitor
It is recommended to place a resistor in series
with the BST capacitor to reduce the SW spike
voltage. A higher resistance reduces SW spikes,
but it also reduces efficiency. It is recommended
to use a 22nF to 220nF ceramic capacitor with
10/16V DC derating.
Consider efficiency and EMI performance when
choosing a resistor. Choose a maximum 22Ω
resistor with a 0603/0402 package, as a large
package is not required. During normal
operation, the average current flowing through
the bootstrap resistor is about 20mA in buck
mode and 10mA in buck-boost mode. If the
capacitor is shorted, the current inside the
resistor is limited by the internal LDO. The device
can quickly detect a failure if the LED current
falls below its low limit. Then the part latches off,
and current is no longer sourced to the resistor.
A 0402 package can handle power dissipation
on the bootstrap resistor.
The part integrates BST capacitor open
detection functionality. When VIN and VCC
reach their under-voltage lockout (UVLO) rising
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
52
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
thresholds, the BST capacitor is charged after
the 1ms thermal derating finishes. If the voltage
on the BST capacitor reaches the UVLO rising
threshold in 45µs, the part detects a BST open
fault and latches off. If VIN restarts frequently,
the BST capacitor may not be able to discharge
sufficiently, and an open fault may be
mistriggered. To avoid a mistrigger, place a
small BST capacitor and a bleeding resistor in
parallel with the BST capacitor. This ensures that
the BST capacitor voltage is sufficiently low after
a restart. It is recommended to use a 22nF
capacitor and 15kΩ resistor (see Figure 7).
BST
RBST
BST Logic
CBST
22nF
R
15kΩ
SW
L
Figure 7: Recommended BST Circuitry for a VIN
Hot-Plug Application
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
53
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
PCB Layout Guidelines (14) (15)
Efficient PCB layout, especially input capacitor
placement, is critical for stable operation. A 4layer layout is strongly recommended to improve
thermal performance. For the best results, refer
to Figure 8 and Figure 9, and follow the
guidelines below:
1.
Place the symmetric ceramic input capacitor,
especially the small package (0603) input
bypass capacitor, as close to the VIN and
PGND pins as possible to reduce highfrequency noise. Keep the connection
between the input capacitor and VIN as
short and wide as possible.
2.
Directly connect the PGND pin to a large
ground plane on the PCB.
3.
If the bottom layer is a ground plane, add
vias near PGND.
4.
Ensure that the high-current paths at PGND
and VIN have short, direct, and wide traces.
5.
Make the connection between the input
capacitor and VIN as short and wide as
possible.
6.
Place the VCC capacitor as close to VCC
and PGND as possible.
7.
Route SW and BST away from sensitive
analog areas.
8.
Use multiple vias to connect the power
planes to the internal layers.
Top Layer
Mid-Layer 1
Mid-Layer 2
Bottom Layer
Figure 8: Recommended PCB Layout for Buck
Mode (14)
Notes:
14) The recommended PCB layout for buck mode is based on
Figure 10.
15) The recommended layout for buck-boost mode is based on
Figure 11 on page 55.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
54
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
Top Layer
Mid-Layer 1
Mid-Layer 2
Bottom Layer
Figure 9: Recommended PCB Layout for Buck-Boost Mode (15)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
55
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
TYPICAL APPLICATION CIRCUITS
R7
CIN1 CIN2
22nF/ 22nF/
50V 50V
0603 0603
VBATT1
CIN3 CIN4 CIN5 CIN6
CIN7 C1A C1B C1C C1D
22nF/ 22nF/ 10µF/10µF/ L1 47µF 10µF/ 10µF/ 0.1µF/ 0.1µF/
50V 50V 50V 50V
50V 50V 50V 50V 4.7µH 50V
1210 1210 0603 0603
0603 0603 1210 1210
20Ω
BST
IN
4,13
XEL4030472MEB
C2
0.1µF
7
XEL4030472MEB
L2
MPQ7200
14
GND
R1
100kΩ
INGND
3
EN/DIM
10
R2
100kΩ
19
FAULT
2
IREF 17
FAULT
ISET
NTC
VCC
C2A
2.2µF
25V
1206
18
16
C1
R5
C2B
2.2µF
25V
1206
C2C
1nF
25V
0603
C2D
1nF
25V
0603
R6
LED-
DUTY AGND PGND
R4
15
1
10µF 5.36kΩ 23.2kΩ
5,6
11,12
R3
4.87kΩ
10k
LED+
4.7µH
EN/DIM
NC
ILED = 3A
8,9
SW
Figure 10: Typical Application Circuit (Buck Mode, ILED = 3A, No Two-Step Dimming)
R7
CIN1 CIN2
22nF/ 22nF/
50V 50V
0603 0603
CIN3 CIN4 CIN5 CIN6
22nF/ 22nF/ 10µF/10µF/
50V 50V 50V 50V
0603 0603 1210 1210
CIN7 C1A C1B C1C C1D
L1 47µF/ 4.7µF/4.7µF/0.1µF/ 0.1µF/
50V 50V 50V 50V
4.7µH 50V
1210 1210 0603 0603
VIN
20Ω
4,13
XAL4030472MEB
C2
7
0.1µF
XAL4030472MEB
L2
BST
IN
MPQ7200
14
GND
R1
100kΩ
3
EN/DIM
10
R2
19
FAULT
100kΩ
2
R4
10k
INGND
ILED = 1.2A
LED+
8,9
SW
4.7µH
EN/DIM
IREF 17
C2A
FAULT
ISET
18
NTC
VCC
4.7µF
25V
1206
NC
DUTY
16
C2E
C2F
1nF
25V
0603
1nF
25V
0603
C2B
C2C
L3
220nH
R5
R6
C1
10µF 13.3kΩ 2.32kΩ
AGND PGND
1
C2D
4.7µF 1nF 1nF
25V 25V 25V
1206 0603 0603
LED-
5,6
11,12
15
R3
4.87kΩ
C5A
C5B C5C C5D
0.47µF/ 0.47µF/ 0.1µF/ 0.1µF/
50V
50V 50V
50V
1206
1206 0603 0603
D1
B140
Figure 11: Typical Application Circuit (Buck-Boost Mode, ILED = 1.2A, No Two-Step Dimming)
R4
20Ω
VIN
CIN1 CIN2 CIN3 CIN4 CIN5 CIN6
22nF 22nF 22nF 22nF 10µF 10µF
L1
CIN7
47µF
7
C1A C1B C1C C1D
4.7µF 4.7µF 0.1µF 0.1µF
C2
BST
4,13 IN
4.7µH
0.1µF
MPQ7200
GND
14
R1
100kΩ
EN/DIM
FAULT
3
10
R2
100kΩ
19
2
L2
INGND
SW
ILED = 1.2A
8,9
4.7µH
EN
IREF 17
C2A
C2B
FAULT
ISET 18
4.7µF
4.7µF
NTC
VCC 16
NC
DUTY
AGND PGND
1
15
R3
C1
R5
R6
10µF 13.3kΩ 2.32kΩ
5,6
11,12
LED+
R8
LED-
100kΩ
4.87kΩ
C5A C5B C5C C5D R7
0.47µF 0.47µF 0.1µF 0.1µFNTC
D4
B140
Figure 12: Typical Application Circuit (Buck-Boost Mode, ILED = 1.2A, LED+ Short to Battery Protection)
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
56
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
PACKAGE INFORMATION
QFN-19 (3mmx4mm)
Wettable Flank
PIN 1 ID
MARKING
PIN 1 ID
INDEX AREA
BOTTOM VIEW
TOP VIEW
SECTION A-A
SIDE VIEW
NOTE:
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) EXPOSED PADDLE SIZE DOES NOT INCLUDE
MOLD FLASH.
3) LEAD COPLANARITY SHALL BE 0.08
MILLIMETERS MAX.
4) JEDEC REFERENCE IS MO-220.
5) DRAWING IS NOT TO SCALE.
RECOMMENDED LAND PATTERN
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
57
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
CARRIER INFORMATION
Pin1
1
1
ABCD
1
1
ABCD
ABCD
ABCD
Feed Direction
Part Number
Package
Description
Quantity/
Reel
Quantity/
Tube
Quantity/
Tray
Reel
Diameter
Carrier
Tape Width
Carrier
Tape Pitch
MPQ7200GLEAEC1-Z
QFN-19
(3mmx4mm)
5000
N/A
N/A
13in
12mm
8mm
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
58
MPQ7200 – 42V, 1.2A, BUCK-BOOST OR 3A BUCK SYNC LED DRIVER, AEC-Q100
REVISION HISTORY
Revision #
1.0
1.1
Revision Date
10/9/2020
2/22/2023
Description
Initial Release
Added the new part number (MPQ7200GLE) to the
Ordering Information section; updated the “–Z” suffix to “Z”
Updated the EN/DIM pin description
Grammar and formatting revisions
Added the number of LEDs to the conditions of the
Efficiency with 2 LEDs and Efficiency with 1 LED curves
Updated the VFAULT channel name to “VFAULT 10V/div.” for
the first Two-Step Dimming waveform
Updated the VFAULT channel name to “VFAULT 10V/div.” for
the second Two-Step Dimming waveform
Added the number of LEDs to the conditions of the
Efficiency with 3 LEDs and Efficiency with 4 LEDs curves
Updated the Enable (EN) Control section
Updated the Pulse-Width Modulation (PWM) Dimming
section
Updated the Fault Detection Indicator section
Updated Table 3; updated the Notes section
Updated the Power Derating section
Updated the NTC Thermal Derating section
Updated the Setting the LED Current section; updated
Figure 6
Updated the PCB Layout Guidelines section; updated the
Notes section; updated Figure 8; updated Figure 9
Updated Figure 11; updated the figure titles for Figure 10,
Figure 11, and Figure 12
Updated the Package Information section
Updated the “–Z” suffix to “-Z”
Pages Updated
3
4
12–14
20
22
24
33
42
43
45
47
48
49
50
54–55
56
57
58
Notice: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third-party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MPQ7200 Rev. 1.1
www.MonolithicPower.com
2/22/2023
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2023 MPS. All Rights Reserved.
59
工商网监
湘ICP备2023018690号
