TPD1039S

2006-10-31

2

Block Diagram

Pin Description

Pin No.

Symbol

Pin Description

1

IN

Input pin.

This pin is connected to a pull-down resistor internally, so that even when input wiring is

open-circuited, output can never be turned on inadvertently.

2

DRAIN

Output pin.

The current limit for output current is 5 A (typ.) when excessive current flow into a device because

of in-rush current and short load of a lamp.

3

SOURCE

Ground pin.

Timing Chart

Overtemperature

Detection/Protection

1

3

DRAIN

IN

SOURCE

2

Overcurrent Detection

/Protection

Input signal

Current limiting

(limiter)

Overtemperature

protection

Overcurrent

Output current

Normal

Normal

Overtemperature