General Description

The DS2731 is a complete power-management solution for modular backup applications. It is well-suited for 2.5V and below memory bus voltages, with an input voltage of 12V. The DS2731 includes an internal MOSFET switching power stage for charging a one-cell lithium chemistry battery.

Features

♦ Lithium Chemistry CCCV Charger

♦ Adjustable Regulated Charging Up to 1.5A DC

♦ Adjustable Charge Voltage from 3.8V to 4.6V

♦ External and Internal Thermal Protection

♦ Safety Timer Secondary Termination

♦ LED Indicator Outputs

♦ Detects Power Outage and Switches Between Normal Power and Backup Battery

♦ Adjustable High-Efficiency Synchronous Buck Regulator with Skip Mode at Light Loads

♦ Low-Power Consumption in Discharge Mode

Applications

    RAID Controller Card