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3.3V、经济型复位芯片,带有手动复位按钮

产品详情

主要特征

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
Reset Thresh. Accur. (%) (@ +25°C) 2.5
Reset Out Active Low
Open Drain
tRESET (min) 85ms to 300ms
Watchdog Feature No Watchdog
Supervisor Features Manual Reset
ICC (µA) (max) 35
Package/Pins SOT23/3
TO92/3
Budgetary
Price (See Notes)
1.29
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参量

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
Reset Thresh. Accur. (%) (@ +25°C) 2.5
Reset Out Active Low
Open Drain
tRESET (min) 85ms to 300ms
Watchdog Feature No Watchdog
Supervisor Features Manual Reset
ICC (µA) (max) 35
Package/Pins SOT23/3
TO92/3
Budgetary
Price (See Notes)
1.29

主要特征

  • Improves Reliability of Processor Operation
    • Temperature-Compensated Voltage Monitor for Precise, Automated Power-Fail Detection
    • Automatically Restarts a Microprocessor After Power Failure
    • Maintains Reset for 150ms After VCC Returns to Tolerance for Processor Stabilization
    • Monitors Pushbutton for External Override
    • Active-Low Reset Output
  • Efficient Open-Drain Output with Internal 5.5kΩ Pullup Resistor Saves Power and Space
    • 35µA (max) Quiescent Current
  • Allows for Easy Design with No Complicated Settings
    • Fixed 3.3V Reset Threshold
    • 5%, 10%, and 20% Tolerance Versions Available
  • Operates in Most Commercial and Industrial Environments
    • -40°C to +85°C Operating Temperature Range
  • MXD1818 Offers Improved Performance over the DS1818

应用/用途

描述

The DS1813 (5V) and DS1818 (3.3V) EconoResets are simple three-pin voltage monitors and power-on resets that hold reset for 150ms for stabilization after power returns to tolerance. The voltage monitor uses precision temperature reference and comparator circuits that detect out-of-tolerance conditions and generate an active low reset. The DS1818 has an open-drain output with an internal 5.5kΩ pull-up resistor for use in a wired-AND circuit. The DS1818 also monitors a pushbutton on the reset output, generating a reset when the pushbutton is released.

EconoResets replace discrete components and save space, particularly in the new SOT-23 package. They can benefit any system that requires reliable processor operation, especially consumer products like printers, HVAC, energy management, cellular telephones, PDAs, and set-top boxes.

简化框图

DS1818:原理框图 DS1818:原理框图 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