General Description

The MAX8900_ is a high-frequency, switch-mode charger for a 1-cell lithium ion (Li+) or lithium polymer (Li-Poly) battery. It delivers up to 1.2A of current to the battery from 3.4V to 6.3V (MAX8900A/MAX8900C) or 3.4V to 8.7V (MAX8900B). The 3.25MHz switch-mode charger is ideally suited to small portable devices such as headsets and ultra-portable media players because it minimizes component size and heat.

Features

♦ 3.25MHz Switching Li+/Li-Poly Battery Charger

♦ JEITA Battery Temperature Monitor Adjusts Charge Current and Termination Voltage

♦ 4.2V ±0.5 Battery Regulation Voltage (Alternate 4.1V Target Available on Request)

♦ Adjustable Done Current Threshold Adjustable from 10mA to 200mA ±1mA Accuracy at 10mA

♦ High-Efficiency and Low Heat

♦ Uses a 2.0mm x 1.6mm Inductor

♦ Positive and Negative Input Voltage Protection (±22V)

♦ Up to +20V Operating Range (Alternate OVLO Ranges Available on Request)

♦ Supports No-Battery Operation

♦ Fault Timer

♦ Charge Status Outputs

♦ 2.44mm x 2.67mm x 0.64mm Package

Applications

    USB Charging

    Headsets and Media

    Players

    Smartphones

    Digital Cameras

    GPS, PND

    eBook