器件名称: AAT3195IJQ-3
功能描述: 4-Channel Charge-Pump LED Driver
文件大小: 1943.11KB 共16页
简 介:PRODUCT DATASHEET
AAT3195
ChargePump
TM
4-Channel Charge-Pump LED Driver
Features
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 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
General Description
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. 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 RSET and is available in a thermally enhanced, Pb-free 2x2.1mm 10-lead 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
IN OUT
WLEDs
CIN 1F
CP 1F
C+
COUT 1F
AAT3195
CD1 D2
EN/SET S2Cwire Interface
EN/SET GND
D3 D4
3195.2008.09.1.0
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PRODUCT DATASHEET
AAT3195
ChargePump
TM
4-Channel Charge-Pump LED Driver
Pin Descriptions
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