Datasheet > AAT3195IJQ-2

AAT3195IJQ-2

更新时间： 2022-12-15 00:27:59

品牌	Logo	应用领域
AAT		驱动器泵
页数	文件大小	规格书
16页	1938K
描述
4-Channel Charge-Pump LED Driver

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AAT3195IJQ-2 数据手册

PRODUCT DATASHEET

AAT3195

ChargePump

4-Channel Charge-Pump LED Driver

General Description

Features

•

The AAT3195 is a charge-pump based, current-sink

white LED driver capable of driving one to four LEDs up

to 30mA, each. It automatically switches between 1x

mode and 2x mode to maintain the highest efficiency

and optimal LED current accuracy and matching.

Drives up to 4 LEDs at up to 30mA, each

Automatic Switching Between 1x and 2x Modes

1MHz Switching Frequency

Linear LED Output Current Control

Single-wire, S²Cwire™ Interface

▪

•

AAT3195-1: 30mA, 32-step

AAT3195-2: 20mA, 32-step

The AAT3195 charge pump’s 1x mode (bypass mode)

has very low resistance allowing LED current regulation

to be maintained with input supply voltage approaching

the LED forward voltage. The AAT3195 incorporates an

internal R_SETand is available in a thermally enhanced,

Pb-free 2x2.1mm 10-lead SC70JW-10 package.

•

ON/OFF or PWM Interface

▪

•

AAT3195-3

•

±10% LED Output Current Accuracy

3% LED Output Current Matching

Low-current Shutdown Mode

Built-in Thermal Protection

Automatic Soft-start

2x2.1mm SC70JW-10 Package

Applications

•

Cordless Phone Handsets

Digital Cameras

Mobile Phone Handsets

MP3 and PMP Players

Typical Application

Input Voltage

2.7V to 5.5V

WLEDs

OUT

C_OUT

1µF

C+

C_P

1µF

C_IN

1µF

AAT3195

C-

EN/SET

S Cwire

Interface

GND

w w w . a n a l o g i c t e c h . c o m

3195.2008.09.1.0

12 3 4 5 6 7...16

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