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微处理器电压监测器,带有双路过压/欠压检测

微处理器电压监控器,提供双门限过压/欠压检测

产品详情

主要特征

应用/用途

Parametric specs for Supervisors (2 Monitored Voltages)
Reset Thresh. (V) 1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 2
Reset Out Active High
Active Low
Open Drain
Interface R/C Adjustable
tRESET (min) <1ms
Watchdog Feature No Watchdog
Supervisor Features Adjustable Reset Input
Overvoltage/Window Monitor
ICC (µA) (max) 15
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
2.87
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简化框图

技术文档

支持和培训

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参量

Parametric specs for Supervisors (2 Monitored Voltages)
Reset Thresh. (V) 1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 2
Reset Out Active High
Active Low
Open Drain
Interface R/C Adjustable
tRESET (min) <1ms
Watchdog Feature No Watchdog
Supervisor Features Adjustable Reset Input
Overvoltage/Window Monitor
ICC (µA) (max) 15
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
2.87

主要特征

  • µP Over/Undervoltage Warning
  • Improved Second Source
  • Dual Comparator with Precision Internal Reference
  • 3µA Operating Current
  • 2% Threshold Accuracy (ICL7665A)
  • 1.6V to 16V Supply Voltage Range
  • On-Board Hysteresis Outputs
  • Externally Programmable Trip Points
  • Monolithic, Low-Power CMOS Design

应用/用途

  • µP电压监视
  • 备用电池切换
  • 高/低温度、压力、电压报警
  • 低电池检测
  • 过压/欠压保护
  • 电源故障监视
  • 电源失效和跌落检测

描述

The ICL7665 warns microprocessors (µPs) of overvoltage and undervoltage conditions. It draws a typical operating current of only 3µA. The trip points and hysteresis of the two voltage detectors are individually programmed via external resistors to any voltage greater than 1.3V. The ICL7665 will operate from any supply voltage in the 1.6V to 16V range, while monitoring voltages from 1.3V to several hundred volts. The Maxim ICL7665A is an improved version with a 2%-accurate VSET1 threshold and guaranteed performance over temperature.

The 3µA quiescent current of the ICL7665 makes it ideal for voltage monitoring in battery-powered systems. In both battery- and line-powered systems, the unique combination of a reference, two comparators, and hysteresis outputs reduces the size and component count of many circuits.

简化框图

ICL7665:典型工作电路 ICL7665:典型工作电路 Zoom icon

技术文档

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