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RT4532

Richtek Technology
Part Number RT4532
Manufacturer Richtek Technology
Description High Efficiency Backlight LED Driver
Published May 27, 2016
Detailed Description ® RT4532 High Efficiency Backlight LED Driver General Description The RT4532 is a high-efficiency LED driver for backl...
Datasheet PDF File RT4532 PDF File

RT4532
RT4532


Overview
® RT4532 High Efficiency Backlight LED Driver General Description The RT4532 is a high-efficiency LED driver for backlight applications.
An asynchronous boost converter with an internal Schottky diode and a current source driver are designed to support 6LED/channel with wide input voltage range from 2.
5V to 5.
5V.
An I2C interface can provide easy backlight control in fast and high speed mode.
The RT4532 supports linear mappings with 256 steps to setup the brightness of backlight LEDs.
It also supports PWM dimming to adjust the brightness.
The RT4532 provides complete protection functions such as input under-voltage lockout, over-current, output overvoltage and over-temperature protection.
The OVP threshold voltage can be set at 16V and 24V for different applications.
The RT4532 is available in the WL-CSP-10B 0.
87x2.
07 package.
Ordering Information RT4532 Note : Package Type WSC : WL-CSP-10B 0.
87x2.
07 (BSC) Richtek products are :  RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020.
 Suitable for use in SnPb or Pb-free soldering processes.
Features  Input Voltage Range : 2.
5V to 5.
5V  Internal Schottky Diode  Fast-speed mode I2C Compatible Interface  Drive Up to 6 WLEDs in 4 String  External PWM Brightness Control  550k/1.
1MHz Switching Frequency  Built-in Internal Soft-Start  I2C Programmable 256 Steps Linear Current Regulation  Up to 85% Efficiency with Small Magnetics  Programmable 16V/24V OVP  Current Accuracy ±5% and Current Balance ±3%  UVLO, OVP, OCP, OTP Protection  Shutdown Current : < 1μA  Temperature Range : −40°C to 85°C Applications  Cellular Phones  Digital Cameras  PDAs and Smart Phones  Portable Instruments Simplified Application Circuit L RT4532 LX VOUT VIN CIN Enable VIN EN PWM SCL SDA GND FB1 FB2 …… …… …… …… COUT VOUT x6 Copyright ©2015 Richtek Technology Corporation.
All rights reserved.
DS4532-00 May 2015 is a registered trademark of Richtek Technology Corporation.
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