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MAX8903B Datasheet 1-cell Li+ DC-dc Charger

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: MAX8903B 19-4502; Rev 1; 11/09 EVAALVUAAILTAIOBNLEKIT 2A, 1-Cell Li+ DC-DC Charger for USB and Adapter Power.

General Description

The MAX8903B is an integrated 1-cell Li+ charger and Smart Power Selector™ with dual (AC adapter and USB) power inputs.

The switch mode charger uses a high switching frequency to eliminate heat and allow for tiny external ponents.

It can operate with either separate inputs for USB and AC adapter power, or from a single input that accepts both.

Key Features

  • optimized smart power control to make the best use of limited USB or adapter power. Battery charge current and SYS output current limit are independently set. Power not used by the system charges the battery. Charge current and SYS output current limit can be set up to 2A, while USB input current can be set to 100mA or 500mA. Automatic input selection switches the system load from battery to external power. The DC input operates from 4.15V to 16V with up to 20V protection, while the USB input ha.

MAX8903B Distributor