MB3790 Datasheet | Fujitsu Semiconductor Limited

.. FUJITSU SEMICONDUCTOR DATA SHEET DS04-27502-5E ASSP For Power Supply Applications Bi-CMOS Battery Backup IC MB3790 s DESCRIPTION The MB3790 is designed to control power supplies to SRAM, logic IC, or other circuit devices and protects them against momentary power failures by using backup batteries. In addition to its function to supply the power to these devices, it has a function to switch the source of power to the primary or secondary backup battery when the power supply voltage drops below a predetermined level. Also, it outputs a reset signal when the power supply turns on or off or when a fault occurs in the power supply. Ideally designed as a single-chip IC...