UPD16901

DATA SHEET MOS INTEGRATED CIRCUIT µPD16901 FLASH MEMORY VOLTAGE STEPUP DC/DC CONVERTER IC The µPD16901 is a DC/DC converter IC which produces a 12 V output from a 5 V input source. The integration of a control circuit and power MOSFET in the output stage on a single-chip allows a power supply for flash memory write and erasure to be configured with a reduced number of external components. FEATURES With an on-chip output stage power MOSFET, fewer external components are needed. The ALLMOS structure achieves low power consumption. Internally set output voltage eliminates the need for adjustment. Output can be turned ON/OFF via an external signal. A timer latch type overcurrent protection circuit on chip ORDERING INFORMATION Part Number Package 14-pin plastic SOP (300 mil) µPD16901GS BLOCK DIAGRAM ON/OFF VIN CDLY C1H C1L C2 Reference voltage circuit Startup circuit Timer latch short-circuit protection circuit Charge pump circuit VSW F/F SW β Overcurrent detection circuit Oscillation circuit C.S. FB RT GND The information in this document is subject to change without notice. Document No. S10643EJ2V0DS00 (2nd edition) Date Published May 1997 N Printed in Japan © 1997 µPD16901 ABSOLUTE MAXIMUM RATINGS (TA = 25 ˚C unless specified otherwise) Item Supply voltage Output voltage Total power dissipation Operating ambient temperature Storage temperature range Symbol VIN VSW PT TA Tstg Note Condition Rating 7.0 20 0.9 –20 to 85 –55 to +150 Unit V V W ˚C ˚C ...