TA8161F

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8161F DC / DC Converter System IC For Power Supply The TA8161F is a DC / DC converter system IC, which is developed for supplying a voltage (for 2.5V or 5V) for CMOS IC etc. It is especially suitable for low voltage operation, and for power supply and back−up of speech recording / playback LSls, with only one or two dry batteries. Features · Output voltage can be switched over to 2.5V or 5V VO = 2.5V mode (by one dry−battery) VO = 5V mode (by one or two dry−batteries) · Built−in backup mode with a very low power dissipation VCC = 1.2V, Ta = 25°C, IO = 0 ICC1 = 50µA (typ.)..... VO = 5V mode ICC2 = 30µA (typ.)..... VO = 2.5V mode · Built−in mode switch (back up mode / power supply mode) · Excellent power efficiency, by blocking oscillation · Output current (VCC = 1.2V, Ta = 25°C) IO1 = 11mA (typ.)....... VO = 5V mode IO2 = 22mA (typ.)....... VO = 2.5V mode · Operating supply voltage range (Ta = 25°C) VCC2 (opr) = 0.9~4V (VO = 5V mode) VCC1 (opr) = 0.9~2.2V (VO = 2.5V mode) Block Diagram Weight: 0.09g (typ.) TA8161F 1 2002-10-30 Terminal Explanation Terminal No. Name 1 Mode SW Function Mode switch VCC: Power supply mode GND / OPEN: Back up mode Current driver This terminal can be used for current driver, because it is synchronized with mode switch. 2 DRV In case that this circuit isn't used, this terminal should be connected with SWB2 (pin(5)) terminal, as a result low voltage operation is improved. ...