MM1378

MITSUMI Voltage and Current Control (dual op-amp and shunt regulator) (quad op-amp and shunt regulator) MM1377, 1378 Voltage and Current Control (dual op-amp and shunt regulator) (quad op-amp and shunt regulator) Monolithic IC MM1377, 1378 Outline The MM1377 incorporates an op-amp with a dual low-input offset voltage and a shunt regulator; the MM1378 combines a quad low-input offset voltage op-amp and shunt regulator. They are appropriate for use in battery chargers, switching power supplies and other voltage and current control applications. Op-amps with low input offset voltage are particularly well-suited for handling current detection signals and other low-amplitude signals. Features Op-amp unit 1. Input offset voltage 2. Input offset current 3. Input bias current 4. Common-mode input voltage range 5. Power supply current 0.2mV typ. 5nA typ. 30nA typ. 0~VCC-1V 0.6mA typ. Shunt regulator unit 1. Reference voltage 2. Reference voltage fluctuation (-20~+80°C) 3. Minimum cathode current 2.5V typ. 5mV typ. 0.4mA typ. Package SOP-8C, SOP-8E (MM1377) SOP-14B (MM1378) Applications 1. Charger 2. Switching power supply 3. AC adapter Block Diagram MM1377 MM1378 MITSUMI Voltage and Current Control (dual op-amp and shunt regulator) (quad op-amp and shunt regulator) MM1377, 1378 Pin Assignment MM1377 MM1378 8765 1234 SOP-8C, SOP-8E 14 13 12 11 10 9 8 1234567 SOP-14B 1 AOUT 2 AIN3 AIN+(REF) 4 GND 5 BIN+ 6 BIN7 BOUT 8 VCC 1 AOUT 8 2 AIN- 9 3 AIN+(REF) 10 4 VCC 11 ...