©

1997

DATA SHEET

MOS INTEGRATED CIRCUIT

Document No. S10643EJ2V0DS00 (2nd edition)

Date Published May 1997 N

Printed in Japan

µPD16901

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

µPD16901GS

14-pin plastic SOP (300 mil)

BLOCK DIAGRAM

ON/OFF

VIN

CDLY

C1H

C1L

C2

FB

RT

GND

C.S.

VSW

F/F

Reference

voltage circuit

Startup

circuit

Timer latch short-circuit

protection circuit

Charge pump

circuit

Oscillation

circuit

Overcurrent

detection circuit

β

SW

FLASH MEMORY VOLTAGE STEPUP DC/DC CONVERTER IC

The information in this document is subject to change without notice.