Fairchild Semiconductor KA3100D Datasheet

KA3100D

Stepping Motor Driver

www.fairchildsemi.com

Features

• Built-in vertical PNP power transistors

• Wide supply voltage range(V

• Low saturation voltage (0.4V@ 0.4A)

• Built-in chip enable function

• Built-in shoot-through current protector

• Built-in thermal shutdown(TSD) function

• Built-in current-mode control circuit (I

= 2.5V ~ 7.0V)

CC

PEAK

Description

The KA3100D is a monolithic integrated circuit designed for a two-phase stepping motor driver of a FDD system.

16-SOP-225

: 1A)

Typical Application

• Floppy disk drive

• Camera stepping motor

• General stepping motor

Ordering Information

Device Package Operating Temp.

KA3100D 16-SOP-225 −20 ~ +75°C

KA3100DTF 16-SOP-225 −20 ~ +75°C

Rev. 1.0.2

May. 2000.

1

KA3100D

Pin Assignments

PGND

CE2

OUT3

VS2

OUT4

IN2

NC

910111213141516

KA3100D

12345678

CC

V

CE1

OUT1

VS1

OUT2

IN1

SGND

PGND

Pin Definitions

Pin Number Pin Name I/O Pin Function Description

1V

CC

2 CE1 I Chip enable 1 3 OUT1 O Output 1 4 VS1 - Power supply 1 5 OUT2 O Output 2 6 IN1 I Input 1 7 SGND - Signal ground 8 PGND - Power ground

9 NC - No connection 10 NC - No connection 11 IN2 I Input 2 12 OUT4 O Output 4 13 VS2 - Power supply 2 14 OUT3 O Output 3 15 CE2 I Chip enable 2 16 PGND - Power ground

- Logic part supply voltage

2

Internal Block Diagram

V

1

CC

IN1

6

CE1

2

SGND

7

Control

Part1

TSD &

BIAS

KA3100D

4

VS1

3

OUT1

5

OUT2

8

PGND

13

VS2

IN2

CE2

14

OUT3

11

Control

Part2

15

10 9

NC NC

12

OUT4

16

PGND

3