General Description

The MAX1908/MAX8724/MAX8765/MAX8765A highly integrated, multichemistry battery-charger control ICs simplify the construction of accurate and efficient chargers. These devices use analog inputs to control charge current and voltage, and can be programmed by the host or hardwired. The MAX1908/MAX8724/MAX8765/MAX8765A achieve high efficiency using a buck topology with synchronous rectification.

Features

♦ ±0.5 Output Voltage Accuracy Using Internal Reference (±0.4 for MAX8765A, 2-/3-Cell Only)

♦ ±4 Accurate Input Current Limiting

♦ ±5 Accurate Charge Current

♦ Analog Inputs Control Charge Current and Charge Voltage

♦ Outputs for Monitoring

    Current Drawn from AC Adapter

    Charging Current

    AC Adapter Presence

♦ Up to 17.6V Battery-Voltage Set Point

♦ Maximum 28V Input Voltage

♦ > 95 Efficiency

♦ Shutdown Control Input

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

Applications

    Notebook and Subnotebook Computers

    Personal Digital Assistants

    Handheld Terminals