MPQ4475M
36V, 2.5A, Frequency Selectable,
Step-Down Converter
with Single USB Charging Port
AEC-Q100 Qualified
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MPQ4475M integrates a monolithic, stepdown, switch-mode converter with a single USB
current-limit switch and a charging port
identification circuit. The MPQ4475M achieves
2.5A of continuous output current with excellent
load and line regulation over a wide input
supply range.
The output of the USB switch is current-limited.
The MPQ4475M provides a USB dedicated
charging port (DCP), which supports Battery
Charging Specification 1.2 (BC1.2), divider
mode, and 1.2V/1.2V mode without the need of
outside user interaction.
The output voltage has programmable line drop
compensation.
Full protection features includes hiccup current
limiting, output over-voltage protection (OVP), and
thermal shutdown.
The MPQ4475M requires a minimum number of
readily available, standard, external components
and is available in a QFN-25 (4mmx4mm)
package.
EMI Reduction Technique
Wide 7V to 36V Operating Input Voltage
Range
Fixed 5V Output Voltage with Line Drop
Compensation
Accurate USB Output Current Limit
40mΩ/32mΩ Low RDS(ON) Internal Buck
Power MOSFETs
24mΩ Low RDS(ON) Internal USB Power
MOSFET
350kHz / 250kHz / 150kHz Frequency
Selectable
Programmable Line Drop Compensation
Output Over-Voltage Protection (OVP)
Hiccup Current Limit
Supports DCP Scheme for BC1.2, Divider
Mode, and 1.2V/1.2V Mode
±8kV HBM ESD Rating for USB, DP, and
DM Pins
Available in a QFN-25 (4mmx4mm)
Package
Available in AEC-Q100 Grade 1
Less than 1s Short-Circuit Recovery
(Hiccup Mode Off-Time)
APPLICATIONS
Automotive USB Smart Charging Ports
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”
and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
Efficiency vs.
Load Current
100
95
90
VIN=12V
85
VIN=7V
80
75
70
65
0
0.5
1
1.5
2
LOAD CURRENT (A)
MPQ4475M Rev.1.01
www.MonolithicPower.com
6/2/2017
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© 2017 MPS. All Rights Reserved.
2.5
1
MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
ORDERING INFORMATION
Part Number*
MPQ4475MGR
MPQ4475MGR-AEC1
Package
Top Marking
QFN-25 (4mmx4mm)
See Below
* For Tape & Reel, add suffix –Z (e.g. MPQ4475MGR–Z)
TOP MARKING
MPS: MPS prefix
Y: Year code
WW: Week code
M4475M: Product code of MPQ4475MGR and MPQ4475MGR-AEC1
LLLLLL: Lot number
PACKAGE REFERENCE
DM
DP
NC
NC
VDROP
VCC
AGND
TOP VIEW
23
22
21
20
19
18
17
DM
1
16
AGND
USB
2
15
NC
OUT
3
14
OUT
IN
4
13
IN
12
PGND
24
25
SW
7
8
9
10
11
SW
BST
PGND
PGND
6
EN
5
FREQ
PGND
OUT
QFN-25 (4mmx4mm)
MPQ4475M Rev.1.01
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6/2/2017
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2
MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance
Supply voltage (VIN) ..................................... 40V
VSW .................................................. -0.3V (-5V for 2V, OC,
TJ = -40°C to +125°C
VOUT = 5V, VBUS connected to GND,
TJ = +25°C
VOUT = 5V, VBUS connected to GND,
TJ = -40°C to +125°C
V
3.5
5
6.5
3
5
7
0.35
0.5
0.65
0.2
0.5
0.8
125
155
125
160
2.7
2.7
22
22
2.82
2.85
30
34
ms
s
BC1.2 DCP Mode
DP and DM short
resistance
RDP/DM_Short
VDP = 0.8V, IDM = 1mA, TJ = +25°C
VDP = 0.8V, IDM = 1mA,
TJ = -40°C to +125°C
Ω
Divider Mode
DP/DM output voltage
VDP/DM_Divider
DP/DM output impedance
RDP/DM_Divider
VOUT = 5V, TJ = +25°C
VOUT = 5V, TJ = -40°C to +125°C
TJ = +25°C
TJ = -40°C to +125°C
2.54
2.5
16
14
MPQ4475M Rev.1.01
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V
kΩ
5
MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, VEN = 5V, TJ = -40°C to +125°C, typical value is tested at TJ = +25°C, unless otherwise
noted.
Parameter
1.2V/1.2V Mode
Symbol
DP/DM output voltage
VDP/DM_1.2V
DP/DM output impedance
RDP/DM_1.2V
Condition
Min
Typ
Max
VOUT = 5V, TJ = +25°C
VOUT = 5V, TJ = -40°C to +125°C
TJ = +25°C
TJ = -40°C to +125°C
1.16
1.15
55
50
1.25
1.25
68
68
1.34
1.35
80
93
Units
V
kΩ
NOTE:
6) Guaranteed by design.
MPQ4475M Rev.1.01
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MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VOUT = 5V, L = 22µH, fS = 250kHz, TA = 25°C, unless otherwise noted.
LINE DROP COMPENSATION (mV)
Line Drop Compensation
vs. Load Current
100
450
400
350
95
VDROP=Float
90
300
200
0
0
VIN=7V
80
VDROP=VCC
100
50
VIN=12V
85
250
150
Efficiency vs.
Load Current
70
VDROP=GND
0.5
1
1.5
2
LOAD CURRENT (A)
75
2.5
65
0
0.5
1
1.5
2
LOAD CURRENT (A)
2.5
MPQ4475M Rev.1.01
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6/2/2017
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MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, VOUT = 5V, L = 22µH, fS = 250kHz, TA = 25°C, unless otherwise noted.
Output Ripple
Output Ripple
Power Startup
VIN = 12V, USB_IOUT = 0A
VIN = 12V, USB_IOUT = 2.5A
VIN = 12V, USB_IOUT = 0A
USB
VOUT/AC
10mV/div.
USB
VOUT/AC
10mV/div.
Buck
VOUT
5V/div.
VSW
10V/div.
IL
500mA/div.
Buck
VOUT
5V/div.
USB
VOUT
2V/div.
Buck
VOUT
5V/div.
VSW
10V/div.
VSW
10V/div.
IL
2A/div.
USB
IOUT
2A/div.
Power Startup
Power Shutdown
Power Shutdown
VIN = 12V, USB_IOUT = 2.5A,
CRL Load
VIN = 12V, USB_IOUT = 0A
VIN = 12V, USB_IOUT = 2.5A,
CRL Load
USB
VOUT
2V/div.
Buck
VOUT
5V/div.
USB
VOUT
2V/div.
Buck
VOUT
5V/div.
USB
VOUT
2V/div.
Buck
VOUT
5V/div.
VSW
10V/div.
VSW
5V/div.
VSW
5V/div.
USB
IOUT
2A/div.
USB
IOUT
2A/div.
USB
IOUT
2A/div.
USB Over Current
Protection
USB
VOUT
2V/div.
USB
IOUT
2A/div.
MPQ4475M Rev.1.01
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6/2/2017
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MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
PIN FUNCTIONS
QFN 4x4
Pin #
Name
1, 23
DM
2
USB
3, 14, 24
OUT
4, 13
IN
5, 6, 11, 12
PGND
7
FREQ
8
9, 25
EN
SW
10
BST
15
16, 17
18
NC
AGND
VCC
19
VDROP
20, 21
NC
22
DP
Description
D- data line to the USB connector. DM is the input/output used for
handshaking with portable devices.
USB output.
Buck output. OUT is the USB’s power input. The internal circuit senses the
OUT voltage and regulates it at 5V.
Supply voltage. The MPQ4475M operates from a 7V to 36V input voltage. CIN
prevents large voltage spikes at the input. Place CIN as close to the IC as
possible. IN is the drain of the internal power device and the power supply for
the whole chip.
Power ground. PGND is the reference ground of the regulated output voltage
and requires extra care during PCB layout. Connect PGND to GND with copper
traces and vias.
Frequency selection. Float FREQ to set the frequency at 150kHz. Pull FREQ
to ground to set the frequency at 250kHz. Pull FREQ high to set the frequency
at 350kHz.
On/off control input.
Switch output. Use wide PCB traces to make the connection.
Bootstrap. Connect a 0.1µF capacitor between SW and BST to form a floating
supply across the high-side switch driver.
No connection. NC can be connected to OUT for better thermal dissipation.
Analog ground. Connect AGND to PGND.
Internal 5V LDO regulator output. Decouple VCC with a 0.22µF capacitor.
Line drop compensation selection. Refer to the EC table for detailed
specifications.
No connection. NC must be left floating.
D+ data line to the USB connector. DP is the input/output used for
handshaking with portable devices.
MPQ4475M Rev.1.01
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6/2/2017
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MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
BLOCK DIAGRAM
IN
EN
1MΩ
12KΩ
Current Sense
Amplifier
VCC
Regulator
7.6V
VCC
Oscillator
Σ
Reference
Bootstrap
Regulator
FREQ
HS
Driver
Current Limit
Comparator
Control
Logic
OUT
Rtop
SS
Rbot
VCC
SW
LS
Driver
PGND
Error Amplifier
Line Drop
Compensation
VDROP
BST
OVP Comparator
PWM Comparator
Curent
Sense
USB
Discharge
Charge
Pump
UVLO
Current
Limit
Control
Logic
Thermal
Sense
Discharge
2.7V
AGND
1.2V
DP
Auto
Detect
DM
NC
Figure 1: Functional Block Diagram
MPQ4475M Rev.1.01
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6/2/2017
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MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
OPERATION
BUCK CONVERTER SECTION
The MPQ4475M integrates a monolithic,
synchronous, rectified, step-down, switch-mode
converter with internal power MOSFETs and a
USB current-limit switch with charging port autodetection. The MPQ4475M offers a very compact
solution that achieves 2.5A of continuous output
current with excellent load and line regulation
over a wide input supply range.
The MPQ4475M operates in a fixed-frequency,
peak-current-mode control to regulate the output
voltage. The internal clock initiates the PWM
cycle, which turns on the integrated high-side
power MOSFET (HS-FET). The HS-FET remains
on until its current reaches the value set by the
COMP voltage (VCOMP). When the power switch is
off, it remains off until the next clock cycle begins.
If the duty cycle reaches 88% (350kHz switching
frequency) in one PWM period, the current in the
power MOSFET cannot reach the COMP-set
current value, and the power MOSFET is forced
off.
Error Amplifier (EA)
The error amplifier (EA) compares the internal
feedback voltage against the internal 1V
reference (REF) and outputs a COMP voltage,
which controls the power MOSFET current. The
optimized
internal
compensation
network
minimizes the external component count and
simplifies the control loop design.
Internal VCC Regulator
The 5V internal regulator powers most of the
internal circuitries. This regulator takes the VIN
input and operates in the full VIN range. When VIN
exceeds 5.0V, the output of the regulator is in full
regulation. When VIN is less than 5.0V, the output
decreases with VIN. VCC requires an external
0.22µF ceramic decoupling capacitor.
Enable Control (EN)
The MPQ4475M has an enable control pin (EN).
Pulling EN high enables the IC; pulling EN low
disables the IC. Connect EN to VIN through a
resistor for automatic start-up. An internal 1MΩ
resistor from EN to GND allows EN to float to
shut down the IC. EN is clamped internally using
a 7.6V series Zener diode (see Figure 2).
Connect the EN input through a pull-up resistor
to any voltage connected to VIN. EN requires
limiting the EN input current below 230μA and
the amplitude of the voltage source below 10V to
prevent damage to the Zener diode.
For example, if connecting 36V to VIN, then
RPULLUP ≥ (36V - 10V) / 230µA = 113kΩ.
Figure 2: Zener Diode between EN and GND
Under-Voltage Lockout (UVLO)
Under-voltage lockout (UVLO) protects the chip
from operating at an insufficient supply voltage.
The MPQ4475M’s UVLO comparator monitors
the input voltage. The UVLO rising threshold is
5.7V, and its falling threshold is 4.7V.
Internal Soft Start (SS)
The soft start (SS) prevents the converter output
voltage from overshooting during start-up. When
the chip starts up, the internal circuitry generates
a SS voltage that ramps up from 0V to 5V. When
SS is lower than REF, the error amplifier uses SS
as the reference. When SS is higher than REF,
the error amplifier uses REF as the reference.
The SS time is set to 1.65ms internally.
If the output of the MPQ4475M is pre-biased to a
certain voltage during start-up, the IC disables
the switching of both the high-side and low-side
switches until the voltage on the internal SS
capacitor exceeds the internal feedback voltage.
MPQ4475M Rev.1.01
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6/2/2017
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MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
Buck Over-Current-Protection (OCP)
The MPQ4475M uses a cycle-by-cycle overcurrent limit when the inductor peak current
exceeds the current-limit threshold, and the FB
voltage drops below the under-voltage (UV)
threshold (typically 70% below the reference).
Once UV is triggered, the MPQ4475M enters
hiccup mode to restart the part periodically. This
protection mode is especially useful when the
output is dead-shorted to ground. This reduces
the average short-circuit current greatly,
alleviates thermal issues, and protects the
regulator. The MPQ4475M exits hiccup mode
once the over-current condition is removed.
Buck Output Over-Voltage Protection (OVP)
The MPQ4475M buck converter has output overvoltage protection (OVP). If the output is higher
than 6V, the high-side switch stops turning on.
The low-side switch turns on to discharge the
output voltage until the output decreases to
5.75V, and the chip then resumes normal
operation. If the output over-voltage cannot be
discharged to 5.75V, the low-side switch is
turned off after the inductor current reaches the
negative current limit. The low-side switch turns
on again when the next clock cycle is triggered.
Start-Up and Shutdown
If both VIN and EN exceed their respective
thresholds, the chip is enabled. The reference
block starts first, generating a stable reference
voltage and current, and then the internal
regulator is enabled. The regulator provides a
stable supply for the remaining circuitries.
Three events can shut down the chip: EN low, VIN
low, and thermal shutdown. During shutdown, the
signaling path is blocked first to prevent any fault
triggering. VCOMP and the internal supply rail are
then pulled down. The floating driver is not
subject to this shutdown command.
Buck Output Discharge
The buck portion involves a discharge function
that provides a resistive discharge path for the
external output capacitor. This function is active
when the part is disabled (input voltage is under
UVLO, enable off), and is done in a very limited
amount of time. After VCC is discharged below
1V, the buck output discharge resistor is
disconnected.
Floating Driver and Bootstrap Charging
An external bootstrap capacitor powers the
floating power MOSFET driver. This floating
driver has its own UVLO protection. The UVLO’s
rising threshold is 2.2V with a hysteresis of
150mV. The bootstrap capacitor voltage is
regulated internally by VIN through D1, M1, C4,
L1, and C2 (see Figure 3). If VBST - VSW exceeds
5V, U1 regulates M1 to maintain a 5V BST
voltage across C4.
D1
VIN
M1
BST
5V
U1
C4
VOUT
SW
L1
C2
Figure 3: Internal Bootstrap Charging Circuit
MPQ4475M Rev.1.01
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MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
USB Output Over-Voltage Protection (OVP)
USB CURRENT-LIMIT SWITCH SECTION
To protect the device at the cable terminal, the
Current-Limit Switch
USB switch output uses a dynamic over-voltage
The MPQ4475M integrates a single-channel USB
protection (OVP) threshold. The MPQ4475M
current-limit switch. The switch provides built-in,
adjusts the OVP threshold based on different
soft-start circuitry that controls the rising slew
USB loading currents.
rate of the output voltage to limit inrush current
and voltage surges.
When the load current reaches the current-limit
threshold (typically 2.75A), the USB power
MOSFET switches into foldback current limit
mode (70% of the current limit) (see Figure 4).
When the over-current limit condition lasts longer
than 3ms, the device enters hiccup mode with
3ms of on time and 0.5s of off time.
Vout(V)
Iout(A)
Current Limit
5
Fold-back
Current Limit
0
3ms
t
Figure 4: Over-Current Limit
Output Line Drop Compensation
The MPQ4475M can compensate for an outputvoltage drop (such as high impedance caused by
a long trace) to maintain a fairly constant 5V
load-side voltage.
The MPQ4475M uses the internal current-sense
output voltage of the current-limit switch to
compensate for the line drop voltage. Since the
trace resistance is different for different cables,
the MPQ4475M provides selectable line drop
compensation through VDROP. The line drop
compensation amplitude increases linearly as the
load current increases, and also has an upper
limitation.
The MPQ4475M uses intelligent line drop
compensation and a dynamic over-voltage
protection control scheme to ensure that the
voltage at the cable terminal meets the 4.75V 5.25V specification.
USB Output Discharge
USB portion involves a discharge function that
provides a resistive discharge path for the
external output capacitor. The function is active
when the part is disabled (input voltage is under
UVLO, enable off), and is done in a very limited
amount of time.
Auto-Detection
The MPQ4475M integrates the USB dedicated
charging port auto-detect function, which
recognizes most mainstream portable devices.
The MPQ4475M supports the following charging
schemes:
USB Battery Charging Specification BC1.2/
Chinese
Telecommunications
Industry
Standard YD/T 1591-2009
Divider Mode
1.2V/1.2V Mode
The auto-detect function utilizes a state machine
that supports all of the above DCP charging
schemes.
After power startup, MPQ4475M will enter default
divider mode, output voltage is 5.05V with full line
drop compensation. If MPQ4475M enters BC1.2
short mode or 1.2V/1.2V mode, output voltage
will change to 5.25V with half line drop
compensation. By doing this, the device uses
BC1.2 mode or 1.2V/1.2V mode that can charge
at its full rated current.
Thermal Shutdown
Thermal shutdown prevents the chip from
operating at exceedingly high temperatures.
When the silicon die temperature exceeds 165°C,
the entire chip shuts down. When the
temperature falls below its lower threshold
(typically 145°C), the chip is enabled again.
MPQ4475M Rev.1.01
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6/2/2017
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MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
APPLICATION INFORMATION
Selecting the Inductor
Use an inductor with a DC current rating at
least 25% percent higher than the maximum
load current for most applications. Select an
inductor with a small DC resistance for optimum
efficiency. For most designs, the inductor value
can be derived with Equation (1):
L1
VOUT (VIN VOUT )
VIN IL fOSC
VIN
Choose the inductor ripple current to be
approximately 30% of the maximum load
current. The maximum inductor peak current
can be calculated with Equation (2):
I L
2
(2)
Typically, a 22μH inductance is recommended
to improve EMI.
Selecting the Buck Input Capacitor
The input current to the step-down converter is
discontinuous and therefore requires a
capacitor to supply AC current to the step-down
converter while maintaining the DC input
voltage. Use low ESR capacitors for best
performance. Ceramic capacitors with X5R or
X7R dielectrics are highly recommended
because of their low ESR and small
temperature coefficients. For CLA applications,
a low ESR 100μF electrolytic capacitor and two
10μF ceramic capacitors are recommended for
EMI reduction.
Since the input capacitor (C1) absorbs the input
switching current, it requires an adequate ripple
current rating. The RMS current in the input
capacitor can be estimated with Equation (3):
I C1 ILOAD
VOUT VOUT
1
VIN
VIN
The input capacitor can be electrolytic, tantalum,
or ceramic. When using electrolytic capacitors,
place two additional high-quality ceramic
capacitors as close to IN as possible. The input
voltage ripple caused by the capacitance can
be estimated with Equation (5):
(1)
Where ∆IL is the inductor ripple current.
IL(MAX ) ILOAD
For simplification, choose an input capacitor
with an RMS current rating greater than half of
the maximum load current.
ILOAD
V
V
OUT 1 OUT
fS C1 VIN
VIN
(5)
Selecting the Buck Output Capacitor
The device requires an output capacitor (C2) to
maintain the DC output voltage. Estimate the
output voltage ripple with Equation (6):
VOUT
VOUT VOUT
1
1
RESR
fS L1
VIN
8 fS C2
(6)
Where L1 is the inductor value, and RESR is the
equivalent series resistance (ESR) value of the
output capacitor.
For electrolytic capacitors, the ESR dominates
the impedance at the switching frequency. For
simplification, the output ripple can be
approximated with Equation (7):
∆VOUT
VOUT
V
1 OUT
fS L1
VIN
RESR
(7)
The characteristics of the output capacitor
affect the stability of the regulatory system. A
low ESR electrolytic capacitor is recommended
for low output ripple and good control loop
stability. For CLA applications, a 270µF polymer
or electrolytic capacitor with ~20mΩ ESR and
one 1µF ceramic capacitor are recommended.
(3)
The worst-case condition occurs at VIN = 2VOUT,
shown in Equation (4):
IC1
ILOAD
2
(4)
MPQ4475M Rev.1.01
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6/2/2017
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MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
PCB Layout Guidelines
Efficient PCB layout is critical for stable
operation and thermal dissipation. For best
results, refer to Figure 5 and follow the
guidelines below.
1. Connect OUT with short, direct, and wide
traces.
2. Add vias under the IC.
3. Route the OUT trace on both PCB layers.
4. Use a large copper plane for PGND.
5. Add multiple
dissipation.
vias
for
better
thermal
6. Connect AGND to PGND.
Mid1 Layer
7. Use a large copper plane for SW and USB.
8. Place the USB output capacitor close to
USB.
9. Place two ceramic input decoupling
capacitors as close to IN and PGND as
possible to improve EMI performance.
10. Place the VCC decoupling capacitor as
close to VCC as possible.
Mid2 Layer
Top Layer
Bottom Layer
Figure 5: Recommended Layout
MPQ4475M Rev.1.01
www.MonolithicPower.com
6/2/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
15
MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
TYPICAL APPLICATION CIRCUIT
C4
100nF
L2
2.2µH
C1C
10μF
L1
22μH
10
VIN
12V
4,13
C1
100μF
+
C1A
10μF
C1B
10μF
R1
300kΩ
8
9,25
BST
SW
3,14,24
IN
NC
EN
USB
15
DM
DP
19
7
18
C5
10μF
NC
FREQ
1, 23
D-
22
D+
U
S
B
USB, 2.5A
20,21
No Connection
VCC
AGND
16, 17
PGND
5,6,11,12
C3
220nF
VDROP
C2
270μF
20mΩ ESR
+
2
MPQ4475M
Optional filter for improving
conduction EMI
Float
C2A
1μF
OUT
Figure 6: VIN = 12V, USB = 5V/2.5A
MPQ4475M Rev.1.01
www.MonolithicPower.com
6/2/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
16
MPQ4475M – 36V, 2.5A, STEP-DOWN CONVERTER W/ SINGLE USB CHARGING PORT
PACKAGE INFORMATION
QFN-25 (4mmx4mm)
NOTICE: The information in this document is subject to change without notice. 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.
MPQ4475M Rev.1.01
www.MonolithicPower.com
6/2/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
17
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