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MB3793-37A - POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER

General Description

The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer.

A reset signal is output when the power is cut or falls abruptly.

When the power recovers normally after resetting, a power-on reset signal is output to microprocessor units (MPUs).

Key Features

  • Precise detection of power voltage fall: ±2.5% Detection voltage with hysteresis Low power dispersion: ICC = 30 µA (reference) Internal dual-input watchdog timer Watchdog-timer halt function (by inhibition pin) Independently-set wacthdog and reset times s.

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Full PDF Text Transcription (Reference)

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www.DataSheet4U.com FUJITSU SEMICONDUCTOR DATA SHEET DS04-27403-3E ASSP For Power Supply Applications BIPOLAR Power Voltage Monitoring IC with Watchdog Timer MB3793-37A s DESCRIPTION The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer. A reset signal is output when the power is cut or falls abruptly. When the power recovers normally after resetting, a power-on reset signal is output to microprocessor units (MPUs). An internal watchdog timer with two inputs for system operation diagnosis can provide a fall-safe function for various application systems. There is also a mask option that can detect voltages of 4.9 to 2.4 V in 0.1-V steps. The model number is MB3793-37A corresponding to the detected voltage.