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MM1174 Datasheet(PDF) 1 Page - Mitsumi Electronics, Corp. |
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MM1174 Datasheet(HTML) 1 Page - Mitsumi Electronics, Corp. |
1 / 6 page MITSUMI System Reset (with battery back-up) MM1025, 1174 System Reset (with battery back-up) Monolithic IC MM1025, 1174 Outline These ICs were developed for D-RAM and dummy S-RAM battery back-up. D-RAM and dummy S-RAM power supplies differ from that of S-RAMs because 5V or 3.3V of power supply is required even during battery back-up. Therefore, these ICs provide voltage from a stable power supply during both normal operation and back-up. Also, the internal stable power supply switches automatically to battery back-up if the main power supply voltage goes down for any reason. Features 1. Battery back-up MM1025 Current consumption 600µA typ. Input/output voltage difference IL=40mA 0.25V typ. Output current 40mA max. MM1174 Current consumption 300µA typ. Input/output voltage difference IL=40mA 0.13V typ. Output current 40mA max. 2. Normal operation MM1025 Input/output voltage difference IL=80mA (built-in transistor) 0.29V typ. Output current VCC=6V 80mA typ. External transistor drive current VCC= 6V 15mA typ. Current consumption 900µA max. MM1174 (for external transistor) Input/output voltage difference IL=200mA 0.13V typ. Output current Depends on external transistor External transistor drive current (no built-in TR) VCC=3.6V 10mA typ. Current consumption 500µA max. 3. Switching voltage from VCC to Battery VCC=High Low MM1025 4.9V typ. MM1174 3.25V typ. 4. VCC-Battery forced switching and detection voltage adjustment possible Package SOP-8A Applications 1. Memory cards (D-RAM cards, other) 2. PCs, word processors and other equipment with D-RAMs 3. Fax machines, photocopiers and other office equipment with D-RAMs |
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