ADT7110

ADT7110 General Description The ADT7110 is a fixed frequency step-down converter designed to drive Infrared LEDs in the CCD camera module application. And internal current limit circuit protect external devices. 1 2 3 Package outline of the ADT7110 6 5 A11 4 Features Input voltage range : 10.5V to 15V Current mode PWM controller with integrated compensation components 350mA output load current available Built-in chip enable/disable function Built-in current limit protection 500kHz fixed frequency internal oscillator Applications Infrared LED driver for CCD camera Small outline SOT-26 package (2.9mm x 1.6mm body) Typical Application Circuit VOUT RSE RS VIN C2 VIN A11 GND RFB2 RFB1a L1 RFB1b C1 RFB1c RFB1d RFB1e RLED5 RLED6 RLED4 RLED3 RLED2 RLED1 RFB1f U1 EN EN FB PWM VFB * This specifications are subject to be changed without notice Jun. 07. 2008 / Rev. 0.1 www.DataSheet.in 1/8 http://www.ad-tech.co.kr ADT7110 Part List Component U1*1 L1 C1 C2 RSE RLED1 ~ RLED6*2 Description Composite type with a PNP transistor and schottky barrier diode Output filter inductor Output filter capacitor Bypass capacitor Current sense resistor LED current ballast resistor Buck converter feedback loop component Buck converter feedback loop component IC Chip inductor Tantalum capacitor Tantalum capacitor Chip resistor Chip resistor , 1% Chip resistor Chip resistor , 1% Type FP103 47uH/590mA 47uF/16V 10uF/25V 0.1Ω 4.0Ω 120㏀ (table 3) 68㏀ (table 2) Value RFB1a ~ RF...