AAT3195
AAT3195 is 4-Channel Charge-Pump LED Driver manufactured by AAT.
PRODUCT DATASHEET
Charge Pump
4-Channel Charge-Pump LED Driver
Features
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- - Drives up to 4 LEDs at up to 30m A, each Automatic Switching Between 1x and 2x Modes 1MHz Switching Frequency Linear LED Output Current Control
- Single-wire, S2Cwire™ Interface
- AAT3195-1: 30m A, 32-step
- AAT3195-2: 20m A, 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 30m A, 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.
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Applications
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- - 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 1µF
CP 1µF
C+
COUT 1µF
CD1 D2
EN/SET S2Cwire Interface
EN/SET...
