GENERAL DESCRIPTION

The ADP3806 is a complete Li-Ion battery-charging IC. The device combines high output voltage accuracy with constant current control to simplify the implementation of constant current, constant-voltage (CCCV) chargers.

FEATURES

Li-Ion battery charger

Three battery voltage options

Selectable 12.525 V/16.700 V

Selectable 12.600 V/16.800 V

Adjustable

High end-of-charge voltage accuracy

±0.4 @ 25°C

±0.6 @ 5°C to 55°C

±0.7 @ 0°C to 85°C

Programmable charge current with rail-to-rail sensing

System current sense with reverse input protection

Soft start charge current

Undervoltage lockout

Bootstrapped synchronous drive for external NMOS

Programmable oscillator frequency

Oscillator SYNC pin

Low current flag

Trickle charge

APPLICATIONS

Portable computers

Fast chargers