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AS1917 Supervisor IC

Microprocessor supervisory circuits with manual reset and watchdog


  • No external components
  • Integrated watchdog


  • Small BOM
  • Blocks runaway code

Product parameters

Supervised Voltages [V (IN1)] 1.58 to 3.6
- [V (IN2)]
- [V (IN3)]
- [V (IN4)]
Inputs 1
Push/Pull Active Low
Push/Pull Active High Yes
Watchdog Yes
Man. Reset Yes
Supply Current [µA] 5.5
Supply Voltage [V] 1.0 to 3.6
Package SOT23-5

General Description

The AS1917 (push-pull driver with active high reset) is a supervisor with manual reset and watchdog. Reset thresholds are factory programmable between 1.8V and 3.6V in steps of 100mV. The duration of the reset is fixed at 215ms, watchdog timeout is 1.5s. The device operates down to 1V.

This product suits for the following applications:

  • Portable and battery-powered systems
  • Embedded controllers
  • Intelligent instruments
  • Automotive systems
  • Critical CPU monitoring

Technical Documents

Name Type Description Version Language
AS1917_BD000303_1-00.png Block Diagram AS1917 Block Diagram 1-00 English
AS1917_DS000282_2-00.pdf Datasheet Document version 1.04 2-00 English

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