FUJITSU SEMICONDUCTOR DATA SHEET
DS04-27400-7E
ASSP For power supply applications
BIPOLAR
Power Supply Monitor
MB3771
s DESCRIPTION
The Fujitsu MB3771 is designed to monitor the
voltage level of one or two power supplies (+5 V and an arbitrary
voltage) in a microprocessor circuit, memory board in large-size computer, for example.
If the circuit’s power supply deviates more than a specified amount, then the MB3771 generates a reset signal to the microprocessor.
Thus, the computer data is protected from accidental erasure.
Using the MB3771 requires few external components.
To monitor only a +5 V supply, the MB3771 requires the connection of one external capacitor.
The level of an arbitrary...