MAX1772 - 低成本、多种化学类型电池充电器电路

MAX1772是Maxim美信半导体公司的一款电池管理产品，MAX1772是低成本、多种化学类型电池充电器电路，本站介绍了MAX1772的封装应用图解、特点和优点、功能等，并给出了与MAX1772相关的Maxim元器件型号供参考。

MAX1772 - 低成本、多种化学类型电池充电器电路 - 电池管理 - 精度为0.7%的输入限流、多化学类型电池充电器，提供完备的解决方案 - 美信半导体

产品概述

The MAX1772 is a highly-integrated, multichemistrybattery-charger control IC that simplifies the constructionof accurate and efficient chargers. The MAX1772uses analog inputs to control charge current and voltageand can be programmed by the host or hardwired.High efficiency is achieved by a buck topology withsynchronous rectification.

Maximum current drawn from the AC adapter is programmableto avoid overloading the AC adapter whensupplying the load and the battery charger simultaneously.This enables the user to reduce the cost of theAC adapter. The MAX1772 provides outputs that canbe used to monitor the current drawn from the ACadapter, battery-charging current, and the presence ofan AC adapter.

The MAX1772 can charge two to four lithium-ion (Li+)series cells, easily providing 4A. When charging, theMAX1772 automatically transitions from regulating currentto regulating voltage. It is available in a space-saving28-pin QSOP package.

关键特性

以下关键特性由Maxim美信半导体提供：

Input Current Limiting

±0.5% Output Voltage Accuracy Using InternalReference (0°C to +85°C)

Programmable Battery Charge Current >4A

Analog Inputs Control Charge Current andCharge Voltage

Monitor Outputs for:

Current Drawn from AC Input Source

Charging Current

AC Adapter Present

Up to 18.2V (max) Battery Voltage

8V to 28V Input Voltage

>95% Efficiency

99.99% (max) Duty Cycle for Low-DropoutOperation

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

热门应用

手持式终端

笔记本电脑和亚笔记本电脑

PDA及其它手持设备

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