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微处理器电压监测器,可编程检测电压

产品详情

主要特征

应用/用途

Parametric specs for Supervisors (1 Monitored Voltage)
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) 3
Reset Out Active Low
Open Drain
tRESET (min) <1ms
Watchdog Feature No Watchdog
Supervisor Features High Voltage (>6V)
ICC (µA) (max) 15
Package/Pins CDIP/8
PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
2.18
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简化框图

支持和培训

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参量

Parametric specs for Supervisors (1 Monitored Voltage)
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) 3
Reset Out Active Low
Open Drain
tRESET (min) <1ms
Watchdog Feature No Watchdog
Supervisor Features High Voltage (>6V)
ICC (µA) (max) 15
Package/Pins CDIP/8
PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
2.18

主要特征

  • µP Power-Fail Warning
  • Improved 2nd Source for ICL8211/ICL8212
  • Low-Power CMOS Design
  • 5µA Quiescent Current
  • On-Board Hysteresis Output
  • ±40mV Threshold Accuracy (±3.5%)
  • 2.0V to 16.5V Supply-Voltage Range
  • Define Output Current Limit (MAX8211)
  • High Output Current Capability (MAX8212)

应用/用途

  • µP电压监视
  • 备用电池切换
  • 低电池检测
  • 过压检测
  • 电源故障监视
  • 欠压检测

描述

Maxim's MAX8211 and MAX8212 are CMOS micropower voltage detectors that warn microprocessors (µPs) of power failures. Each contains a comparator, a 1.15V bandgap reference, and an open-drain n-channel output driver. Two external resistors are used in conjunction with the internal reference to set the trip voltage to the desired level. A hysteresis output is also included, allowing the user to apply positive feedback for noise-free output switching.

The MAX8211 provides a 7mA current-limited output sink whenever the voltage applied to the threshold pin is less than the 1.15V internal reference. In the MAX8212, a voltage greater than 1.15V at the threshold pin turns the output stage on (no current limit).

The CMOS MAX8211/MAX8212 are plug-in replacements for the bipolar ICL8211/ICL8212 in applications where the maximum supply voltage is less than 16.5V. They offer several performance advantages, including reduced supply current, a more tightly controlled bandgap reference, and more available current from the hysteresis output.

简化框图

MAX8211、MAX8212:典型工作电路 MAX8211、MAX8212: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