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MP3371GR Datasheet Preview

MP3371GR Datasheet

Boost WLED Driver

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MP3371
8-Channel, Synchronous, 50V
Boost WLED Driver with I2C Interface
DESCRIPTION
The MP3371 is a synchronous boost converter
with eight current channels designed to drive
WLED arrays for LCD panels in tablets and
notebook backlighting applications.
The MP3371 uses peak current control mode
and pulse-width modulation (PWM) control to
maintain boost converter regulation. The
MP3371 employs a standard I2C digital interface
to set the operation mode, switching frequency,
full-scale current for each channel, sync or non-
sync mode, dimming mode and duty, and
various protection thresholds.
The MP3371 features high efficiency due to low-
headroom voltage for LED regulation and a small
on resistance of the switching MOSFET. The
synchronous rectifier saves PCB size and total
BOM cost.
The MP3371 is available in a QFN-24
(4mmx4mm) package.
FEATURES
8 Channels with Max 50mA/Channel
Synchronous Converter with 50V LS-FET/HS-
FET 155m/235mΩ On Resistance
3V to 30V Input Voltage Range
470mV LED Regulation Voltage at 20mA
Max 2.5% Current Matching
350kHz, 500kHz, 650kHz, 800kHz, 950kHz,
or 1.2MHz Selectable Switching Frequency
A1 Pins for Two I2C Addresses
0mA to 50mA Full-Scale LED Current, 8 Bits,
0.196mA/Step
Selectable Sync or Non-Sync Mode
Multi-Dimming Operation Mode Including:
o Analog Dimming through External PWM
Input or I2C Interface, 10-Bit Resolution
o PWM Dimming through External PWM
Input or I2C Interface, 14-Bit Resolution
o Mixed Dimming Mode through External
PWM Input or I2C Interface with 6.25%,
12.5%, 25%, or 50% Transfer Point, 14-
Bit PWM Duty Resolution
Linear Smooth Dimming with 2µs, 4µs, 8µs,
16µs, 32µs, 64µs, or 128µs Step-Slope Set
LED Short/Open, OTP, OCP, Inductor, or
Diode Short Protection
o 2.5V/5V/7.5V/10V LED Short Threshold
o 24V/31V/37.5V/45V OVP Threshold
o 1.8A/2.5A Current Limit
Cascade Function to Share Power Stage
Available in a QFN-24 (4mmx4mm) Package
APPLICATIONS
Tablets/Notebooks
Automotive Displays
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.
MP3371 Rev. 1.0
www.MonolithicPower.com
1
4/14/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.




MPS

MP3371GR Datasheet Preview

MP3371GR Datasheet

Boost WLED Driver

No Preview Available !

MP3371 8-CHANNEL, SYNCHRONOUS, 50V BOOST WLED DRIVER WITH I2C
TYPICAL APPLICATION
VIN
Optional to Short VOUT to
GND for protection
L1
C1
M1
D1
R1
C2
C4
24 23 22 21 20 19
C3
1
2
3
4
5
6
R2
VCC
EN
SDA
MP3371
SCL
PWM
COMP
OUT 18
17
NC
PGND 16
LED1 15
LED2 14
13
LED3
C5
7 8 9 10 11 12
VOUT
LED Strings 18
MP3371 Rev. 1.0
www.MonolithicPower.com
2
4/14/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.


Part Number MP3371GR
Description Boost WLED Driver
Maker MPS
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