GENERAL DESCRIPTION

The ADP3820 is a precision single cell Li-Ion battery charge controller that can be used with an external Power PMOS device to form a two-chip, low cost, low dropout linear battery charger. It is available in two voltage options to accommodate Li-Ion batteries with coke or graphite anodes. The ADP3820’s high accuracy (±1) low shutdown current (1 µA) and easy charge current programming make this device especially attractive as a battery charge controller.

FEATURES

±1 Total Accuracy

630 μA Typical Quiescent Current

Shutdown Current: 1 μA (Typical)

Stable with 10 μF Load Capacitor

4.5 V to 15 V Input Operating Range

Integrated Reverse Leakage Protection

6-Lead SOT-23-6 and 8-Lead SO-8 Packages

Programmable Charge Current

–20°C to +85°C Ambient Temperature Range

Internal Gate-to-Source Protective Clamp

APPLICATIONS

Li-Ion Battery Chargers

Desktop Computers

Hand-Held Instruments

Cellular Telephones

Battery Operated Devices