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电池管理器

产品详情

主要特征

应用/用途

Parametric specs for Battery Backup Circuits
ICC (µA) (max) 3330
Oper. Temp. (°C) -55 to +125
-40 to +85
0 to +70
Package/Pins LCC/20
PDIP/16
SOIC (W)/16
Budgetary
Price (See Notes)
4.27
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参量

Parametric specs for Battery Backup Circuits
ICC (µA) (max) 3330
Oper. Temp. (°C) -55 to +125
-40 to +85
0 to +70
Package/Pins LCC/20
PDIP/16
SOIC (W)/16
Budgetary
Price (See Notes)
4.27

主要特征

  • Switches to Backup Battery if Power Fails
  • Consumes Less than 100nA of Battery Current
  • Power-Fail Output Signals Primary Power-Supply Loss
  • Battery Monitor Indicates Low Battery
  • Battery Can Be Disconnected to Prevent Discharge During Shipping
  • Battery Automatically Reconnected when VCC is Applied
  • Pin-Compatible with the DS1259
  • Supply Current Three Times Lower than DS1259
  • Available in Extended-Industrial and Military Temperature Ranges

应用/用途

  • CMOS RAM备用电池
  • 计算机
  • 控制器
  • 不间断电源

描述

The MAX1259 battery manager provides backup-battery switching for CMOS RAM, microprocessors, or other low-power logic ICs. It automatically switches to the backup battery when the primary power supply is interrupted. Low-loss switches guarantee an input-to-output differential of only 200mV while supplying 250mA from the primary power supply or 15mA from the battery.

Battery discharge during shipping does not occur in the MAX1259, since the backup battery can be disconnected by strobing the RST input.

A battery-fail output signal indicates when the backup battery is below +2V, and a power-fail output signal indicates when the primary power supply is low. The MAX1259 monitors the backup battery, warns of impending power failures, and switches the memory to the battery when failures occur. The MAX1259 is pin-compatible with the DS1259, but consumes three times less supply current. Commercial, extended, and military temperature range devices are available.

简化框图

MAX1259:典型应用电路 MAX1259:典型应用电路 Zoom icon

支持和培训

在Maxim的知识库中搜索技术问题的答案

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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