General Description
The AS1920 and AS1922 microprocessor supervisory circuits were designed to generate a reset when at least
one of the three monitored supply voltages falls below its respective trip threshold.

KEY FEATUREs
! Simultaneous Triple-Voltage Monitoring
! Very-Low Supply Current: 6.2µA
! ±1.5% Accuracy Over Temperature
! Reset Time Delay: 200ms
! Power Supply Transient Immunity
! Guaranteed Reset for VCC3 ≥1V or VCC18 ≥ 1V
! Active-Low Push/Pull Reset Output (AS1920)
! Active-Low Open-Drain Reset Output (AS1922)
! 5-pin SOT23 Package

APPLICATIONs
The devices are ideal for personal computers, note books, battery-powered systems, embedded controllers,
intelligent instruments, automotive systems, critical CPU monitoring, and any multi-supply monitoring application.