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备用桥接电池控制器,用于笔记本电脑

利用备份电池控制器可以减少笔记本电脑的备份(桥接)电池节数

产品详情

主要特征

简化框图

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主要特征

  • Reduce Battery Size and Cost
  • Four Key Circuit Blocks
    • Adjustable Boost DC-DC Converter
    • NiCd/NiMH Trickle Charger
    • Always-On Linear Regulator (+28V Input)
    • Low-Battery Detector
  • Low 18µA Quiescent Current
  • Selectable Charging/Discharging Rates
  • Preset Linear-Regulator Voltage
    • 5V (MAX1612)
    • 3.3V (MAX1613)
  • 4V to 28V Main Input Voltage Range
  • Internal Switch Boost Converter
  • Small 16-Pin QSOP Package

应用/用途

  • 备用电池应用
  • 笔记本电脑
  • 便携式设备

描述

The MAX1612/MAX1613 manage the bridge battery (sometimes called a hot-swap or auxiliary battery) in portable systems such as notebook computers. They feature a step-up DC-DC converter that boosts 2-cell or 3-cell bridge-battery voltages up to the same level as the main battery. This voltage boosting technique reduces the number of cells otherwise required for a 6-cell plus diode-OR bridging scheme, reducing overall size and cost. Another key feature is a trickle-charge timer that minimizes battery damage caused by constant charging and eliminates trickle-charge current drain on the main battery once the bridge battery is topped off.

These devices contain a highly flexible collection of independent circuit blocks that can be wired together in an autonomous stand-alone configuration or used in conjunction with a microcontroller. In addition to the boost converter and charge timer, there is a micropower linear regulator (useful for RTC/CMOS backup as well as for powering a microcontroller) and a high-precision low-battery detection comparator.

The two devices differ only in the preset linear-regulator output voltage: +5.0V for the MAX1612 and +3.3V for the MAX1613. Both devices come in a space-saving 16-pin QSOP package.

简化框图

MAX1612、MAX1613:典型工作电路 MAX1612、MAX1613:典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

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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