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MAX6825
电源管理 电路监控、电压监测器及排序器 MAX6825
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MAX6825

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低电压、SOT23封装、微处理器监控电路，带有手动复位及看门狗定时器

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产品详情

请参见参数规范 Supervisors (1 Monitored Voltage)

主要特征

请参见参数规范 Supervisors (1 Monitored Voltage)
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) 2.5
Reset Out Active High
Active Low
Push-Pull
tRESET (min) 85ms to 300ms
Watchdog Feature No Watchdog
Supervisor Features Manual Reset
ICC (µA) (max) 12
Package/Pins SOT23/5
Budgetary
Price (See Notes) 		1.73
请参见参数规范 Supervisors (1 Monitored Voltage)
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Technical Docs

数据资料 低电压、SOT23封装、微处理器监控电路，带有手动复位及看门狗定时器 Oct 07, 2019

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采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后，所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站，请创建一个新帐户。有关此样片网站的任何问题，请联系SampleSupport@analog.com。

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) 2.5
Reset Out Active High
Active Low
Push-Pull
tRESET (min) 85ms to 300ms
Watchdog Feature No Watchdog
Supervisor Features Manual Reset
ICC (µA) (max) 12
Package/Pins SOT23/5
Budgetary
Price (See Notes) 		1.73
See parametric specs for Supervisors (1 Monitored Voltage)

主要特征

  • Monitors +1.8V, +2.5V, +3.0V, +3.3V, +5.0V Supplies
  • 140ms (min) Reset Timeout Delay
  • 1.6s Watchdog Timeout Period (MAX6821/MAX6822/MAX6823/MAX6824)
  • Manual Reset Input (MAX6821/MAX6822/MAX6823/MAX6825)
  • Three Reset Output Options
    • Push-Pull Active-Low RESET
    • Push-Pull RESET
    • Open-Drain Active-Low RESET
  • Guaranteed Reset Valid to VCC = +1.0V
  • Immune to Short Negative VCC Transients
  • No External Components
  • Small 5-Pin SOT23 Packages

应用/用途

  • 计算机与控制器
  • 精确的µP监控
  • 嵌入式控制器
  • 智能仪表
  • 便携式电池供电设备
  • 机顶盒

描述

The MAX6821—MAX6825 are low-voltage microprocessor (µP) supervisory circuits that combine voltage monitoring, watchdog timer, and manual reset input functions in a 5-pin SOT23 package. Microprocessor supervisory circuits significantly improve system reliability and accuracy compared to separate ICs or discrete components. These devices assert a reset signal whenever the monitored voltage drops below its preset threshold, keeping it asserted for a minimum timeout period after VCC rises above the threshold. In addition, a watchdog timer monitors against code execution errors. A debounced manual reset is also available. The MAX6821—MAX6825 monitor voltages from +1.8V to +5.0V. These outputs are guaranteed to be in the correct state for VCC down to +1.0V.

Nine preprogrammed reset threshold voltages are available (see the Threshold Suffix Guide). The MAX6821, MAX6822, and MAX6823 all have a manual reset input and a watchdog timer. The MAX6821 has push-pull RESET, the MAX6822 has open-drain active-low RESET, and the MAX6823 has push-pull active-low RESET. The MAX6824 has a watchdog timer and both push-pull active-low RESET and push-pull RESET. The MAX6825 has a manual reset input and both push-pull active-low RESET and push-pull RESET. The Selector Guide explains the functions offered in this series of parts.

简化框图

、MAX6822、MAX6823、MAX6824、MAX6825：典型工作电路 MAX6821、MAX6822、MAX6823、MAX6824、MAX6825：典型工作电路 Zoom icon

Technical Docs

数据资料 低电压、SOT23封装、微处理器监控电路，带有手动复位及看门狗定时器 Oct 07, 2019

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 。

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后，所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站，请创建一个新帐户。有关此样片网站的任何问题，请联系SampleSupport@analog.com。