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NiCd/NiMH电池快速充电控制器

为1节至16节电池充电,充电速率可达4C

产品详情

主要特征

应用/用途

简化框图

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主要特征

  • Fast-Charge NiMH or NiCd Batteries
  • Voltage Slope, Temperature, and Timer Fast-Charge Cutoff
  • Charge 1 to 16 Series Cells
  • Supply Battery's Load While Charging (Linear Mode)
  • Fast Charge from C/4 to 4C Rate
  • C/16 Trickle-Charge Rate
  • Automatically Switch from Fast to Trickle Charge
  • Linear Mode Power Control
  • 5µA (max) Drain on Battery when Not Charging
  • 5V Shunt Regulator Powers External Logic

应用/用途

  • 蜂窝电话
  • 无绳电话
  • 手持终端
  • 笔记本电脑、笔记本电脑与掌上电脑
  • 便携式立体声

描述

The MAX712/MAX713 fast-charge Nickel Metal Hydride (NiMH) and Nickel Cadmium (NiCd) batteries from a DC source at least 1.5V higher than the maximum battery voltage. 1 to 16 series cells can be charged at rates up to 4C. A voltage-slope detecting analog-to-digital converter, timer, and temperature window comparator determine charge completion. The MAX712/MAX713 are powered by the DC source via an on-board +5V shunt regulator. They draw a maximum of 5µA from the battery when not charging. A low-side current-sense resistor allows the battery charge current to be regulated while still supplying power to the battery's load.

The MAX712 terminates fast charge by detecting zero voltage slope, while the MAX713 uses a negative voltage-slope detection scheme. Both parts come in 16-pin DIP and SO packages. An external power PNP transistor, blocking diode, three resistors, and three capacitors are the only required external components.

The evaluation kit is available: Order the MAX712EVKIT-DIP for quick evaluations of the linear charger.

简化框图

MAX712、MAX713:典型工作电路 MAX712、MAX713:典型工作电路 Zoom icon

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心