General Description

The MAX1667 provides the power control necessary to charge batteries of any chemistry. All charging functions are controlled through the Intel System Management Bus (SMBus™) interface. The SMBus 2-wire serial interface sets the charge voltage and current and provides thermal status information. The MAX1667 functions as a Level 2 charger, compliant with the Duracell/Intel Smart Battery Charger Specification.

Features

♦ Charges Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.

♦ SMBus 2-Wire Serial Interface

♦ Compliant with Duracell/Intel Smart Battery Charger Specification Rev. 1.0

♦ 4A, 3A, or 1A (max) Battery Charge Current

♦ 5-Bit Control of Charge Current

♦ Up to 18.4V Battery Voltage

♦ 11-Bit Control of Voltage

♦ ±1 Voltage Accuracy

♦ Up to +28V Input Voltage

♦ Battery Thermistor Fail-Safe Protection

♦ Greater than 95 Efficiency

♦ Synchronous Rectifier

Applications

Notebook Computers

Charger Base Stations

Personal Digital Assistants

Phones