MP4013B
High-Brightness, High-Current Accuracy
WLED Controller
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP4013B is a current mode controller
designed for driving the high brightness Light
Emitting Diodes (LEDs) with wide supply
voltage 8V-26V. It can be used in both Boost
and SEPIC topologies.
The MP4013B drives external MOSFET with
fixed frequency architecture to regulate the LED
current, which is measured through an external
current feedback resistor. The switching
frequency can be programmed to meet kinds of
applications. The cycle-by-cycle current limit
can be programmed by the sense resistor on
CS pin.
The MP4013B integrates a 600mV reference
voltage for LED current feedback with ±1.2%
accuracy; a 5V reference voltage with ±1%
accuracy for the reference voltage for external
circuit.
The MP4013B implements both DC input
analog dimming and pulse signal input analog
dimming function. The amplitude of the LED
current could be controlled either by the level of
a DC input signal or by the duty cycle of a pulse
signal. The MP4013B also employs fast and
deep PWM dimming to the LED current with
high dimming ratio.
MP4013B integrates Under-Voltage Lockout,
Over Voltage Protection, Over Current
Protection, Short LED Protection, Short Output
Protection, Short Inductor/diode Protection and
OTP. The fault indicator is pulled low in fault
condition.
Constant-current WLED Driver
600mV Feedback Voltage with ±1.2%
Accuracy
8V-26V Input Voltage
Programmable Switching Frequency
Leading Edge Blanking for Current Sense
High Dimming Ratio Fast PWM Dimming
DC Input or Pulse Signal Input Analog
Dimming
5V Reference Voltage with ±1% Accuracy
External PWM Dimming MOS Driver
Programmable Input Bus Voltage UVLO
Soft Start @ Any Startup Condition
Over Voltage Protection
Short LED Protection
Short Output Protection
Over Current Protection
Short Inductor/Diode Protection
Fault Indicator
VIN UVLO
Thermal Shutdown
Available in SOIC-16 package
APPLICATIONS
LCD Backlighting applications
DC/DC LED Driver applications
General Illumination
Industrial Lighting
Automotive/ Decorative LED Lighting
All MPS parts are lead-free, halogen free, and adhere to the RoHS
directive. For MPS green status, please visit MPS website under Quality
Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered
Trademarks of Monolithic Power Systems, Inc.
The MP4013B is available in SOIC-16 package.
MP4013B Rev. 1.01
www.MonolithicPower.com
12/8/2016
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© 2016 MPS. All Rights Reserved.
1
MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
TYPICAL APPLICATION
MP4013B Rev. 1.01
www.MonolithicPower.com
12/8/2016
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© 2016 MPS. All Rights Reserved.
2
MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
ORDERING INFORMATION
Part Number*
MP4013BGS
Package
SOIC-16
Top Marking
See Below
* For Tape & Reel, add suffix –Z (e.g. MP4013BGS–Z);
TOP MARKING
MPS: MPS prefix:
YY: year code;
WW: week code:
MP4013B: product code of MP4013BGS;
LLLLLLLLL: lot number;
PACKAGE REFERENCE
TOP VIEW
MP4013B Rev. 1.01
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MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
ABSOLUTE MAXIMUM RATINGS (1)
VIN, VEN, VADIM_P................................. -0.3V to 28V
VFAULT................................................ -0.3V to 26V
VGATE, VDIMO....................................... -0.3V to 19V
All Other Pins....................................-0.3V to 6.5V
Junction Temperature………………………..150C
Lead Temperature……………………………260C
(2)
Continuous Power Dissipation (TA = +25°C)
SOIC16……………………………………….1.56 W
Recommended Operating Conditions
(3)
IN Supply Voltage VIN ………………………………...8V to 26V
Operating Junction Temp. TJ…….-40C to +125C
Thermal Resistance
(4)
θJA
θJC
SOIC-16………………………….80 .... 35... C/W
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 will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP4013B Rev. 1.01
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MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
ELECTRICAL CHARACTERISTICS
VIN =24V, TA = +25C, unless otherwise noted.
Parameters
Symbol
Operating Input Voltage
Supply Current (Quiescent)
VIN Under Voltage Lockout
VIN Under Voltage Lockout Hysteresis
Feedback
FB Feedback Voltage
FB Input Current
Reference
Reference Voltage
VIN
IQ
VIN-UVLO
VIN-HYS
VFB
IFB
VREFLINE
Reference Load Regulation
VREFLOAD
GATE Sink Current
(5)
Enable
EN High Threshold
EN Low Threshold
EN Input Current
PWM Dimming
PWM High Threshold
PWM Low Threshold
PWM Pull-down Resistance
Min
Typ
Max Units
1.1
7.1
395
26
1.3
7.5
470
V
mA
V
mV
7.6
VFB=1V
VIN Rising
VFB=600mV
VREF
Reference Line Regulation
UVLO
UVLO Threshold
UVLO Hysteresis
UVLO pin Leakage Current
Oscillator
Oscillator Frequency
Oscillator Frequency
Maximum Duty Cycle
GATE
GATE High Threshold
GATE Output Rise Time
GATE Output Fall Time
GATE Source Current(5)
Condition
0.1μF bypass capacitor, IREF=0
VIN=8-24V
0.1μF
bypass
capacitor,
IREF=0-500uA
VUVLO
UVLO Rising
VUVLO-HYS
IUVLO
6.7
320
593
-0.1
600
607
0.1
mV
μA
4.95
5
5.05
V
0
25
mV
0
50
mV
2.25
110
-1
2.37
160
2.49
210
1
V
mV
uA
510
112
95
590
130
97.5
670
148
kHz
kHz
%
12
13.8
IGATE-SO
CGATE=1nF
CGATE=1nF
VGATE=0V
13
40
40
1.5
V
ns
ns
A
IGATE-SI
VGATE=13V
0.7
A
VEN-HI
VEN-LO
IEN
VEN Rising
VEN Falling
VEN=3.3V
1.5
3
V
V
μA
VPWMI-HI
VPWMI-LO
RPWM
VPMW Rising
VPMW Falling
1.5
fOSC1
fOSC2
DMAX
VGATE
TRISE
TFALL
RT=100kΩ
RT=499kΩ
RT=499kΩ
0.8
4
0.8
1
MP4013B Rev. 1.01
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© 2016 MPS. All Rights Reserved.
V
V
MΩ
5
MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
ELECTRICAL CHARACTERISTICS (continued)
VIN =24V, TA = +25C, unless otherwise noted.
Parameters
DIMO
DIMO High Threshold
DIMO Source Current(5)
DIMO Sink Current(5)
Analog Dimming
Maximum Analog Dimming Threshold
Dimming Linearity
Symbol
Condition
VDIMO
VIN=24V
VDIMO=0V
VDIMO=13V
IDIMO-SO
IDIMO-SI
VADMAX
VFB_ADIM
ADIM_P High Threshold
VADIM PHI
ADIM_P Low Threshold
VADIM PLO
ADIM_P Pull Down Resistor
RADIM P
ADIM_P Floating (when the voltage
high than this level, IC take it as no VADIM_PF
pulse signal applied)
Current Sense
Current Limit Value
VCL
OCP Detect Voltage
VOCP
Leading Edge Blanking Time
TBLANK
Compensation
Transconductance of Error Amplifier
GEA
Maximum Sourcing/Sinking Current
IEA
Soft Start Current
ISS
Time for COMP Saturated Protection
TCOMP
Detection
Over Voltage Protection
OVP Threshold
VOVP-TH
OVP Threshold Hysteresis
VOVP-HYS
SCP Protection Threshold
VOVP-SCP
Output Short Protection
FB Short Protection Threshold
Propagation time for short circuit
TOFF
detection
Thermal Shutdown (5)
Min
Typ
Max Units
12.8
13.3
0.1
0.2
13.8
V
A
A
2.25
2.34
2.43
V
VADIM=24mV
9.8
mV
VADIM=100mV
VADIM=240mV
VADIM=480mV
VADIM=720mV
28.4
63.3
123.3
183.3
mV
mV
mV
mV
V
V
MΩ
1.5
0.8
1
Duty=0
Over Current Protection
6
6.45
6.9
V
435
485
490
180
535
mV
mV
ns
100
280
VFB6.9V) to disable the
pulse-signal-input analog dimming function.
Analog Dimming Input Pin. Apply a DC voltage from 0 to 2.34V to adjust the amplitude of
LED current from minimum to full scale to implement the DC analog dimming function.
Place a capacitor on this pin while doing pulse signal input analog dimming. Keep the
voltage of this pin higher than 2.43V when analog dimming is not required.
Compensation Pin. This pin is used to compensate the regulation control loop. Connect a
capacitor or a series RC network from COMP to GND. COMP pin is also used for soft
start. At IC start up, the internal error sourcing/sinking current is limited until the output
current reaches 80% of setting current.
Feedback Input Pin. 600mV internal feedback voltage. Connect a current sense resistor
from FB to GND. The FB voltage is higher than 1.22V for 1us, the short load protection is
triggered, and IC latch off.
Over Voltage Protection Input Pin. Connect a resistor divider from output to this pin to
OVP
program the OVP threshold. When the voltage of this pin reaches 5V, the MP4013B
triggers over voltage protection.
Enable/Switching frequency Synchronization Pin. A high level to enable the IC. Apply a
EN/SYNC high frequency (>40kHz) pulse signal on this pin, the switching frequency can be
synchronized.
FB
MP4013B Rev. 1.01
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12/8/2016
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MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
OPERATION
MP4013B drives external MOSFET with current
mode architecture to regulate the LED current,
which is measured through an external current
sense resistor.
MP4013B employs a special circuit for regulating
the internal power supply, which covers a wide
input voltage from 8V to 26V. MP4013B has a 5V
reference with ±1% accuracy, which is used as
the reference of external circuit.
The switching frequency of MP4013B can be
programmed through the resistor between RT pin
and GND to meet variable specifications.
The slope compensation is integrated to avoid
sub harmonic resonant when duty cycle is
greater than 0.5. The cycle-by-cycle current limit
can be programmed by the sense resistor on CS
pin.
MP4013B implements both DC input analog
dimming and pulse signal input analog dimming.
MP4013B integrates Under-Voltage Lockout,
Over Voltage Protection, Over Current Protection,
Short LED protection, Short Circuit Protection,
Short Inductor/diode Protection and OTP.
VIN
Internal
Reference
&
Regulator
2.4V
UVLO
EN/SYNC
UVLO &
Thermal
FAULT
VREF
Sync
external
frequenncy
ADIM_P
ADIM
ADIM
/4
COMP
SATURATE
EA
GATE
DRIVER
COUNTER
PWM
FB
GND
COMP
0.5V
CS
LEB
LOGIC
DIMO
DRIVER
+
PWM
RT
OSC
SLOPE
COMPESNA
TION
OVP
5V
Figure 1: Functional Block of MP4013B
MP4013B Rev. 1.01
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MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
Soft Start
MP4013B implements soft start by limiting the
current of the internal error amplifier when startup.
The COMP is firstly jump to its clamp voltage
(~0.3V), and then the sourcing/ sinking current of
the internal error amplifier is limited to charge up
external COMP capacitor. IC is always in soft
start mode until the output current reaches 0.8 of
the setting value to achieve the soft start.
adjust the voltage on ADIM pin and realize the
pulse signal input analog dimming.
Pull ADIM_P high (>6.9V) to disable the pulsesignal-input analog dimming.
Connect ADIM pin to 2.43V or higher, if neither
analog dimming or pulse-signal-input analog
dimming is not used.
The soft start process is showing the figure 2,
note that the VIN UVLO, UVLO and EN get the
same priority to ensure the soft start at any
startup condition.
Figure 3: Analog Dimming Functional Block
Figure 2: Soft Start Process
Analog Dimming
MP4013B implements DC input analog dimming
and pulse signal input analog dimming.
For DC input analog dimming, apply a DC
voltage from 0-2.34V on ADIM pin to linearly
adjust internal LED current reference voltage
from minimum to the maximum value.
For pulse-signal-input analog dimming, place a
capacitor on the ADIM pin and apply a pulse
signal (>10 kHz recommended) on ADIM_P pin.
This external pulse signal is adjusted internally
and forms an internal pulse signal with the same
duty and internal reference amplitude. Through
an R-C filter, the average voltage of this internal
pulse signal is gotten on ADIM pin. Adjust the
duty cycle of the pulse signal on ADIM_P to
PWM Dimming
PWM dimming can be achieved by applying a
PWM signal on PWM pin. When the PWM signal
is high, the GATE and DIMO outputs are enabled,
and the output of the internal error amplifier is
connected to the external compensation network.
So the LED current is regulated accurately.
When the PWM signal goes low, the GATE
signal is disabled, and the DIMO pin is pulled
down to GND to turn off the external dimming
MOSFET. Meanwhile, the output of the internal
EA is disconnected from the compensation
network. Thus, the COMP voltage will be held by
the external capacitor. And the dimming
MOSFET can prevent the output voltage from
being discharged, which helps to achieve the
high-speed and deep-ratio PWM dimming with
better linear dimming performance.
To avoid the LED flicker in small ratio PWM
dimming such as 0.1% PWM dimming duty, the
MP4013B Rev. 1.01
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MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
oscillator is synchronized by the PWM dimming
signal.
Protection
MP4013B includes Under-Voltage Lockout, Over
Voltage Protection, Short Load Protection, Short
Circuit Protection, Over Current Protection and
Short Inductor/diode Protection. If the fault
conditions are detected, the Gate, DIMO, COMP
and Fault pins are pulled down.
A Under Voltage Lockout
MP4013B integrates VIN UVLO. The internal
circuit does not work until the VIN voltage
reaches 7.1V. The hysteresis of VIN UVLO is
395mV.
B. Over Voltage Protection
The Over Voltage Protection is detected by the
voltage of OVP pin. When the OVP voltage rise
to its high threshold, the over voltage protection
is triggered. The GATE, DIMO, COMP and Fault
pin are pulled down. After the OVP voltage
decreases to its low threshold, the IC tries to
recover.
C. Short Load Protection
In short load condition, a large short current will
be detected by FB sense resistor. If the FB
sensed voltage is higher than 1.22V for 1.4us,
the Short Load Protection is triggered, IC latch off,
and FAULT pin pulls to low.
D. Short Circuit Protection
Figure 4: Short Circuit Protection Scheme
E. Over Current Protection (Short Inductor/
Diode Protection)
MP4013B implements cycle-by-cycle current limit
function for protection.
In normal operation
caused by over load and lower input voltage, the
over current protection can be recoverable.
In some unexpected cases, like inductor or diode
short cases, when the voltage of CS pin which is
detected by external CS sense resistor hits latch
off current limit value within mini-on time (around
300ns) for 7 consecutive cycles, the Over
Current Protection is triggered, IC latch off.
F. LED- to GND Short Protection
In LED- to GND short condition, FB pin sense no
current that makes the COMP charge to its
saturated value. When COMP keeps saturated
for 2048 switching cycles and FB is below 30% of
internal IREF, protection is triggered, IC latches
off.
When short circuit at normal operation, the output
voltage is pulled low and no current is sensed on
FB pin. If the conditions OVP>CP):
GEA RFB
1
1 s CZ RCOMP
EA(s)
RFB+RLED_AC s CZ 1 s CP RCOMP
Where, GEA is the transconductance of internal
error amplifier. GEA=370uA/V. RLED_AC is the
CP =
1
2 fRHP _ Z RCOMP
Gate Drive Design
A 10-20 Ω gate resistor is recommended as
following figure.
MP4013B Rev. 1.01
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MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
Figure 6: Gate Drive w/ Resistor
TYPICAL APPLICATION CIRCUIT
L1
36V
PVIN
330uH/EFD20
1
WUGP20G 400V/2A
D1
2
1
2
LED+
150V 240mA
PVIN
2
1
2
GND
2
NS
C2
NS
C3
R1
300K
D3 1N4148W
AP18N20GP
R13
200V/18A
3
R4
249K
PGND
1
2
1
M1
C1
10uF/250V
1
C5
47uF/100V 2.2uF/100V
1
2
2
1
C4
20
PGND
C7 100pF
R2
NS
R8
200m
C8
2
1nF
2
R14
200m
U1
3
GATE
OVP
1
SGND
15
R16 2K
1
6
VIN
2
2
11
2.2uF/50V
12
1
NS
1
R21
100K
GND
9
SGND
>10kHz
16
2
ADIM_P
R22
2K
RT
ADIM_P
REF
ADIM
GND
PWM
EN
FAULT
COMP
SGND
2
8
5
1
1uF
R3 C13
10K
R12 NS
SGND
2
C10
1nF
R10
R11
4.99
4.99
SGND
PGND
SGND
13
R9
7.68K
MP4013B
C11
1nF
2
1
C9
100nF
SGND
2
R24 2K
560K
R15
7
1
C15
NS
FB
VIN
SMK0260D
600V/2A
100
14
1
R23
NS
UVLO
R6
1
D2
VIN
1
C6
1
10
2
SGND
VIN=8-26V
DIMO
M2
3
4
CS
LED-
R5 9.31K
2
R7
20K
2
C16
ADIM
SGND
1
33nF
SGND
R19 2K
R20
20K
2
PWM
C14
1nF
1
SGND
R17
2K
2
EN
R18
20K
C12
1nF
1
SGND
Fault
MP4013B Rev. 1.01
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12/8/2016
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18
MP4013B─ HIGH-BRIGHTNESS, HIGH-CURRENT ACCURACY WLED CONTROLLER
PACKAGE INFORMATION
SOIC-16
0.386( 9.80)
0.394(10.00)
0.024(0.61)
9
16
0.063
(1.60)
0.150
(3.80)
0.157
(4.00)
PIN 1 ID
0.050(1.27)
0.228
(5.80)
0.244
(6.20)
0.213
(5.40)
8
1
TOP VIEW
RECOMMENDED LAND PATTERN
0.053(1.35)
0.069(1.75)
SEATING PLANE
0.050(1.27)
BSC
0.013(0.33)
0.020(0.51)
0.004(0.10)
0.010(0.25)
SEE DETAIL "A"
SIDE VIEW
FRONT VIEW
0.010(0.25)
x 45o
0.020(0.50)
GAUGE PLANE
0.010(0.25) BSC
0o-8o
0.016(0.41)
0.050(1.27)
0.0075(0.19)
0.0098(0.25)
NOTE:
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN
BRACKET IS IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSIONS.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.004" INCHES MAX.
5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AC.
6) DRAWING IS NOT TO SCALE.
DETAIL "A"
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.
MP4013B Rev.1.01
www.MonolithicPower.com
12/8/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
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