A708 Datasheet, PDF (1/8 Pages) ADDtek Corp – 3 CHANNELS 20mA ADVANCED CURRENT REGULATOR

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A708
3 CHANNELS 20mA
ADVANCED CURRENT REGULATOR
DESCRIPTION
The A708 is a 3 channels 20mA advanced current
regulator for driving LEDs. Only bypass capacitor is
required and the noise is very low. The special circuit
design provides over 90% efficiency because of the very
low dropout voltage.
Target end applications are LED backlights for color
LCD display, such as mobile phone, smart phone, PDA,
notebook, and monitor, etc.
FEATURES
„ Fixed 20mA DC constant sink current.
„ Individual current sink circuit for each LED
string to prevent short / open circuit on LEDs.
„ TSOT-26 package available.
„ High efficiency.
„ Supply voltage range 2.7V ~ 12V.
„ Output sustaining voltage up to 17V.
„ 0.1uA standby current.
„ 2KV HBM ESD protection.
„ Advanced Bi-CMOS process.
TYPICAL APPLICATION CIRCUIT
V_LED+
C_BP
APPLICATIONS
„ Small Size Color LCD Backlights.
„ Mobile Phone, Smart Phone.
„ LED Backlight for Portable DVD, NB, Monitors,
and UMPC.
PACKAGE PIN OUT
V_DD
C_IN
Enable
LED1 LED2 LED3
VDD
A708
EN
GND
V_DD 1
GND 2
EN 3
6 LED1
5 LED2
4 LED3
A708
TSOT-26
T_A (°C)
Y
-40 ~ 85
ORDER INFORMATION
Plastic TSOT-26
6-pin
A708YFT
Note: The letter ”F” is marked for Lead Free process, and letter “T” is marked for Tape & Reel.
Copyright © 2007 ADDtek Corp.
1
DD076_A -- AUGUST 2007