A708 datasheet(6/8 Pages) ADDTEK

Part #	A708

Description	3 CHANNELS 20mA ADVANCED CURRENT REGULATOR

PDF	8 Pages

Scroll/Zoom	100%

Manufacturer	ADDTEK [ADDtek Corp]

Direct Link	https://www.addmtek.com

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6 / 8 page

A708

DD076_A

AUGUST 2007

Li-ion Battery Voltage Supply

The A708 can work with Li-ion battery. The supply voltage of Li-ion battery ranges from 4.5V down to lower

than 3V while the white/blue LED forward voltage (VF) is in the range of 2.9V to 3.5V at 20mA current. The supply

voltage range and LED forward voltage can be set to fully utilize Li-ion battery energy. For example, if the forward

voltage of white LED is 3.2V at 20mA, the Li-ion battery can discharge until output voltage reaches 3.275V (normally

around 1% ~ 3% power left in the battery). When Li-ion battery voltage is lower than the 3.275V, the LED current

(brightness) will start to decrease.

Enable

A708

LED2

VDD

GND

LED1

LED3

VDD

Li-ion

Battery

A708 Datasheet(PDF) 6 Page - ADDtek Corp