Datasheet > RT9368A

RT9368A

更新时间： 2024-01-17 01:25:07

品牌	Logo	应用领域
立锜 - RICHTEK		驱动器泵
页数	文件大小	规格书
12页	217K
描述
4-Channel Charge Pump White LED Driver with Low Dropout Current Source

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RT9368A 数据手册

RT9368A

4-Channel Charge Pump White LED Driver with Low

Dropout Current Source

General Description

Features

^zVery High Efficiency Over 80% of Battery Life

The RT9368Ais a high efficiency and cost effective charge

pump white LED driver. It supports up to 4 white LEDs

with regulated constant current for uniform intensity. The

RT9368A maintains the highest efficiency by utilizing a

x1/x1.5/x2 charge pump and low dropout current

regulators.

^zSupport up to 4 White LEDs

^zSupport up to 80mA Output Current

^z1% Typical LED Current Matching

^zSoft Start Function

^zAuto Charge Pump Mode Selection

^z250kHz Fixed Frequency Oscillator

^zOutput Over Voltage Protection

^z16 Steps Brightness Control

User can easily configure each LEDcurrent from 1.25mA

to 20mA by a pulse dimming control. The dimming of white

LEDs current can be achieved by applying a pulse signal

to the EN pin. There are totally 16 steps of current could

be set by users.

^zLow Input Noise and EMI

^zRoHS Compliant and 100% Lead (Pb)-Free

RT9368Ais available in a WQFN3x3-16L package.

Applications

z Mobile Phone, DSC, MP3

z White LED Backlighting

z LCDDisplay Supply

Ordering Information

RT9368A

Package Type

QW : WQFN-16L 3x3 (W-Type)

Pin Configurations

Lead Plating System

(TOP VIEW)

P : Pb Free

G : Green (Halogen Free and Pb Free)

Note :

16 15 14 13

Richtek products are :

LED4

12 EN

` 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.

GND

C2P

GND

C1P

Marking Information

WQFN-16L 3x3

For marking information, contact our sales representative

directly or through a Richtek distributor located in your

area.

DS9368A-06 April 2011

www.richtek.com

12 3 4 5 6 7...12

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