器件名称: ADT7110
功能描述: fixed frequency step-down converter designed to drive Infrared LEDs in the CCD camera module application
文件大小: 146.2KB 共8页
简 介: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
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 0.1 4.0 120 (table 3) 68 (table 2) Value
RFB1a ~ RFB1f RFB2*3
*1 : For cost do……
