Datasheet > AAT3192IJQ-2-T1

AAT3192IJQ-2-T1

更新时间： 2024-11-07 02:56:59

品牌	Logo	应用领域
ANALOGICTECH		驱动器泵
页数	文件大小	规格书
18页	572K
描述
2-Channel Charge-Pump LED Driver

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AAT3192IJQ-2-T1 数据手册

PRODUCT DATASHEET

AAT3192

ChargePump

2-Channel Charge-Pump LED Driver

General Description

Features

The AAT3192 is a charge-pump based, current-sink

white LED driver capable of driving one or two 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 2 LEDs at up to 30mA, each

• Automatic Switching Between 1x and 2x Modes

• 0.9MHz Switching Frequency

• Linear LED Output Current Control

Single-wire, S²Cwire Interface

▪

• AAT3192-1: 16-step

• AAT3192-2: 8-step

• AAT3192-3: 4-step

The AAT3192 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.

ON/OFF or PWM Interface

• AAT3192-4

▪

The AAT3192 is available in the 2x2mm, 10-lead SC70JW-

10 package.

• ±10% LED Output Current Accuracy

• ±3% LED Output Current Matching

• Low-Current Shutdown Mode

• Built-in Thermal Protection

• Automatic Soft-Start

• Available in 2x2mm SC70JW-10 Package

Applications

• Entry Level Cordless Phone Handsets

• Entry Level Digital Cameras

• Entry Level Mobile Phone Handsets

• Entry Level MP3 and PMP Players

Typical Application

Input Voltage

2.7V to 5.5V

OUT

C+

C_IN

1μF

C_OUT

1μF

C_P

1μF

AAT3192-1

WLEDs

OSRAM LW M 678

or equivalent

C-

EN/SET

S²Cwire

Interface

EN/SET

RSET

GND

R_SET

14.3kΩ

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

3192.2008.07.1.3

12 3 4 5 6 7...18

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