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AAT3192IJQ-2-T1 Datasheet(PDF) 1 Page - Advanced Analogic Technologies |
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AAT3192IJQ-2-T1 Datasheet(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 18 page  AAT3192 2-Channel Charge-Pump LED Driver ChargePumpTM PRODUCT DATASHEET 3192.2008.07.1.3 1 www .analogictech.com General Description 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. 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. The AAT3192 is available in the 2x2mm, 10-lead SC70JW- 10 package. Features • 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 ▪ ON/OFF or PWM Interface • AAT3192-4 • ±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 IN C+ C- EN/SET OUT D1 D2 RSET RSET 14.3k Ω EN/SET S2Cwire Interface CIN 1μF CP 1μF COUT 1μF GND AAT3192-1 WLEDs OSRAM LW M 678 or equivalent |
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