Datasheet > RT8532

RT8532

更新时间： 2024-11-13 17:01:31

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
14页	268K
描述
6-String 43V White LED Driver with Boost Regulator

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RT8532 技术参数

Status：	Active	Vin (min) (V)：	2.5
Vin (max) (V)：	24	Vout (max) (V)：	43
LED Channels：	6	Topology：	Boost
SW Freq (typ) (kHz)：	500	Vcs (typ) (mV)：	1000
Dimming Control：	PWM;PWM-to-Analog	Features：	Adjustable Frequency;Enable Input;OCP;OVP
Package Type：	WQFN3x3-20	Datasheet：	#N/A

RT8532 数据手册

RT8532

6-String 43V White LED Driver with Boost Regulator

General Description

Features

^Wide Input Voltage : V_IN2.5V to 24V

^High Output Voltage : V_OUTup to 43V

^Programmable Full Channel Current from 5mA to

50mA and Matched to 2%

The RT8532 is a high efficiency white LED driver. It is

designed for LCD panel that employs a LED array as the

lighting source. An integrated switch current mode Boost

controller drives six strings in parallel and supports up to

10 pieces of LEDs per string. The internal current sinks

support maximum 2% current matching for excellent

brightness uniformity in each LEDstring. To provide enough

headroom for the operating of current sink, the Boost

controller monitors the minimum voltage of feedback pins

and regulates an optimized output voltage for power

efficiency.

^Channel Current Regulation with 3% Accuracy

^Dimming Controls

^Direct PWM Dimming up to 20kHz and Minimum

On-Time to 500ns

^PWM to Mixed Analog and PWM Dimming up to

20kHz with Maximum 9 bit Resolution

^Built-In Soft Start to Prevent Inrush Current without

External Capacitor

The RT8532 has wide input voltage range from 2.5V to

24V and provides adjustable 5mA to 50mA LED current.

The internal 200mΩ, 43V power switch with current-mode

control provides cycle-by-cycle over current protection.

The RT8532 also integrates PWM and analog dimming

functions for accurate LEDcurrent control. The input PWM

dimming frequency can be operated operate from 100Hz

to 20kHz without any inrush current in LED.

 Disconnects LED in Shutdown

 Protection

^Strings Open Detection

^Current Limit Protection

^Programmable Over Voltage Protection

^Over Temperature Protection

 20-Lead WQFN Package

 RoHS Compliant and Halogen Free

The RT8532 is available in WQFN-20L 3x3 package.

Applications

 UMPC andNotebook Computer Backlight

Simplified Application Circuit

OUT

Chip Enable

PWM Signal

OVP2

OVP1

VIN

RT8532

OVP

PWM

MIX

LED1

LED2

LED3

LED4

LED5

LED6

COMP

ISET

FREQ

ISET

AGND PGND

FSW

is a registered trademark of Richtek Technology Corporation.

DS8532-05 March 2020

www.richtek.com

12 3 4 5 6 7...14

中文翻译

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与RT8532相关器件

型号	品牌	获取价格	描述	数据表
RT8532-10-4M0	Schaffner	获取价格	Current-compensated Chokes
RT8532-12-3M6	Schaffner	获取价格	Current-compensated Chokes
RT8532-16-3M0	Schaffner	获取价格	Current-compensated Chokes
RT8532-20-2M5	Schaffner	获取价格	Current-compensated Chokes
RT8532-6-6M0	Schaffner	获取价格	Current-compensated Chokes
RT8532-8-4M8	Schaffner	获取价格	Current-compensated Chokes
RT8532A	RICHTEK	获取价格	暂无描述
RT8541	RICHTEK	获取价格	暂无描述
RT8541A	RICHTEK	获取价格	暂无描述
RT8543	RICHTEK	获取价格	6-String 43V White LED Driver with Boost Regulator

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