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AS1920 Supervisor IC

Triple-Voltage Supervisory Circuit with Push/Pull Reset

The AS1920 (push pull driver with active low reset) monitors up to 3 supply rails with factory trimmed reset thresholds and operational accuracy to 1.5%. The IC operates down to 1V and draws 6.5uA typ.

Block diagram of the AS1920 Supervisor IC

Key Features

  • Monitors 3 supply rails
  • Power supply transient immunity

Key Benefits

  • Monitor all system supply rails
  • Suitable for automotive applications

AS1920 Applications

  • Personal Computers
  • Laptops
  • Notebooks
  • Battery Powered Systems
  • Embedded Controllers
  • Intelligent Instruments
  • Automotive Systems
  • Critical CPU Monitoring
  • Multi-Supply Monitoring Applications

AS1920 Product Facts

Supervised voltages [V (IN1)] 3
Supervised voltages [V (IN2)] 1.8
Supervised voltages [V (IN3)] Adjust.
Supervised voltages [V (IN4)]
Inputs 3
Push/Pull active low
Push/Pull active high
Open-Drain
Watchdog
Man. reset
Supply current [μA] 6.5
Supply voltage [V] 1.0 to 3.6
Package SOT23-5