TA8068F

2002-02-27

2

PIN DESCRIPTION

PIN No.

SYMBOL

DESCRIPTION

1

Power supply pin. This pin has a function to turn off the output when the applied voltage

exceeds 30V (Typ.), thus protecting the IC and the motor load.

4

ST

When this pin is opened or grounded, the output turns off, thus reducing the current

consumption to 100µA or less. If standby mode is not needed, the pin is connected to

5

INA

This is input terminal which controls output condition of pin 6 and pin 7. PNP-type voltage

comparator is built in.

6

OA

PNP-type complementary output pin with a current capacity of 1.5A. This pin is controlled

by the input from pin 5. When the output is supplied with a current exceeding the detection

current (4A Typ.) because of load short-circuit, the output is latched to the OFF state after

a 50µs (Typ.) delay in order to protect the IC.

7

OA

Output pin of the inversion of pin 6. This terminal has the same function as pin 6 and is

controlled by pin 5.

10

P-GND

Ground terminal of output section which is usually connected with pin 17.

14

OB

Output pin of the inversion of pin 15. This terminal has the same function as pin 6 and is

controlled by pin 16.

15

OB

This terminal has the same function as pin 6 and is controlled by pin 16.

16

INB

This is input terminal which controls output condition of pin 14 and pin 15. PNP-type

voltage comparator is built in.

17

L-GND

Ground terminal of logic control section which is usually connected with pin 10.

20

DG

Self-diagnostic output pin. This signal goes low when the output is short-circuited while the

input is on (high). The output will be latched after a 50µs (Typ.) delay when the load is

short-circuited.This pin supplies an NPN open-collector output.

2, 3, 8, 9, 11,

12, 13, 18, 19

N.C

Not connected. (Electrically, this pin is completely open.)

TIMING CHART

4 A (typ.)

INA

INB

OA

OB

OA

OB

DG

ST

IO (OA)

Normal

Normal

Short

-Circuit

50 µs Delay