Datasheet > RT4532_15

RT4532_15

更新时间： 2024-02-07 11:47:36

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
12页	204K
描述
High Efficiency Backlight LED Driver

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RT4532_15 数据手册

RT4532

High Efficiency Backlight LED Driver

General Description

Features

^Input Voltage Range : 2.5V to 5.5V

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.

^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

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.

^I²C Programmable 256 Steps Linear Current

Regulation

^Up to 85% Efficiency with Small Magnetics

^Programmable 16V/24V OVP

The RT4532 provides complete protection functions such

as input under-voltage lockout, over-current, output over-

voltage 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.

^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

Ordering Information

 Digital Cameras

RT4532

 PDAs and Smart Phones

 Portable Instruments

Package Type

WSC : WL-CSP-10B 0.87x2.07 (BSC)

Note :

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.

Simplified Application Circuit

RT4532

VOUT

OUT

VIN

x 6

Enable

PWM

SCL

SDA

FB1

FB2

GND

is a registered trademark of Richtek Technology Corporation.

DS4532-01 August 2015

www.richtek.com

12 3 4 5 6 7...12

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