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ACT111A Datasheet(PDF) 2 Page - Active-Semi, Inc |
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ACT111A Datasheet(HTML) 2 Page - Active-Semi, Inc |
2 / 12 page ACT111A Rev 2, 22-Oct-12 Innovative PowerTM - 2 - www.active-semi.com Copyright © 2012 Active-Semi, Inc. ORDERING INFORMATION PIN CONFIGURATION PIN DESCRIPTIONS PART NUMBER TEMPERATURE RANGE PACKAGE PINS PACKING ACT111AUS-T -40°C to 85°C SOT23-6 6 TAPE & REEL TOP MARK FRWE SOT23-6 ACT111AUS-T PIN NUMBER PIN NAME PIN DESCRIPTION 1 FB Feedback Input for regulating LED current. The voltage at this pin is regulated to 0.1V. An external resistor is connected from this pin to ground to sense the LED current. 2 GND Ground. 3 BST Bootstrap pin. This provides power to the internal high-side N channel MOSFET gate driver. Connect a 2.2nF capacitor from the pin to SW pin. 4 SW Internal N channel power MOSFET source output pin. Connect it to one end of power inductor. 5 IN Power supply input. Bypass this pin with a 10µF ceramic capacitor to GND, placed as close to the IC as possible. 6 DIM PWM signal input for dimming control. Apply PWM signal with amplitude greater than 2V to this pin. The device is enabled as DIM pin open and disabled when it is connected to G. |
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