TPD1018F

2006-10-31

2

Pin Description

Pin No.

Symbol

Function

1

OUT

Output pin.

When the load is short-circuited and current in excess of the detection current (0.5A min) flows to the

output pin, the current limiter operates to protect the IC.

2, 3, 4

GND

Ground pins.

5

Power pin.

Incorporates an overvoltage protection function which turns off the output when the voltage applied

exceeds 25V (min). Protects IC and load.

Incorporates 2V (typ.) hysteresis.

6

IN

Input is CMOS-compatible, with pull-down resistor connected.

Even if the input is open, output will not accidentally turn on.

7, 8, 9

GND

Ground pins.

10

DIAG

Self-diagnosis detection pin. Goes low when overcurrent, overheating, or overvoltage is detected.

n-channel open drain.

Timing Chart

Truth Table

Input Signal

Output Signal

Diagnosis Output

State

H

H

H

L

L

H

Normal

H

L

L

L

L

H

Overcurrent

H

L

L

L

L

H

Overtemperature

H

L

L

L

L

H

Overvoltage