Description
www.DataSheet4U.com AS1920, AS1922 Tr i p l e - Vo l ta g e , M i c r o - P o w e r M i c r o p r o c e s s o r Supervi s ory Ci rcuits D a ta S h e.
The AS1920 and AS1922 microprocessor supervisory circuits were designed to generate a reset when at least one of the three monitored supply voltages f.
Features
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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 S
Applications
* The devices are ideal for personal computers, notebooks, battery-powered systems, embedded controllers, intelligent instruments, automotive systems, critical CPU monitoring, and any multi-supply monitoring application. Figure 1. Typical Application Diagram
3V 1.8V 2.5V 5 VCC3 4 R1 130kΩ 1% 0.1µF R2