©

1997

DATA SHEET

MOS INTEGRATED CIRCUIT

MONOLITHIC DUAL H BRIDGE DRIVER CIRCUIT

DESCRIPTION

The

µPD16814GS is a monolithic dual H bridge driver circuit employing a power MOS FET for its driver stage. By

complementing the P channel and N channel of the output stage, the circuit current is substantially improved as

compared with that of the conventional charge pump driver.

Because the dual H bridge driver circuits at the output stage are independent of each other, this IC is ideal as the

driver circuit for a 1- to 2-phase excitation bipolar driving stepping motor for the head actuator of an FDD.

FEATURES

•

Low ON resistance (sum of ON resistance of top and bottom FETs)

Ω TYP.

•

µA MAX.

•

Four input modes independently controlling dual H bridge drivers

•

Stop and Brake modes selectable

•

Surface-mount mini-mold package: 16-pin plastic SOP (300 mil)

PIN CONFIGURATION (Top View)

1A

2A

NC

1B

2B

SEL

DGND

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

ORDERING INFORMATION

Part Number

Package

µPD16814GS

16-pin plastic SOP (300 mil)

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

Document No. S10112EJ4V0DS00 (4th edition)

Date Published August 1997 N

Printed in Japan