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DS1817
高有效、3.3V、经济型复位芯片


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状况:生产中。

概述
完整的数据资料 (PDF, 128kB)
英文 下载数据资料(PDF)下载
The DS1812 (5V) and DS1817 (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 high reset.

The output has a push-structure capable of maintaining a valid output to 0 volts with a 100kΩ pull-down resistor. The low-power circuit has a quiescent current consumption of only 40 micro-amps.

The DS1817 replaces discrete components and saves space, particularly in the new SOT-23 package. EconoResets can benefit any system that requires reliable processor operation, especially consumer products like printers, HVAC, energy management, cellular telephones, PDAs, and set-top boxes.

关键特性
  • Power-fail detection
  • Resets system during power transients
  • Push-pull active high reset
  • 150ms stabilization pause
  • Maximum quiescent current of 35µA
  • Operating ranges:
    • 3.3V with 5%, 10% or 20% tolerance
    • -40°C to +85°C

Key Specifications:  Supervisors (1 Monitored Voltage)
Part Number Reset Thresh.
(V)
Reset Out tRESET Watchdog Feature Reset Thresh. Accur.
(%)
ICC
(µA)
Price
Active High min @ +25°C max See Notes
DS1817  2.5 to 3.3 Push-Pull 85ms to 300ms No Watchdog 2.5 35 $0.40 @1k
查看所有Supervisors (1 Monitored Voltage) (274)

图表
DS1817:原理框图
原理框图

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    1999-11-19
    本页最后一次更新: 2009-10-23


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