October, 20, 2011.

Techcode Semiconductor Limited

www.techcodesemi.com

2

USB Power-Distribution Switches

TD9516/TD9517/TD9518/TD9519

DATASHEET

Pin Description

Pin Number

Pin

Name

Description

TD9516/

TD9517

TD9518/

TD9519

1

5

VOUT

Output Voltage Pin. The output voltage follows the input voltage. When ENB is

high or EN is low, the output voltage is discharged by an internal resistor.

2

2

GND

Ground.

3

1

OCB

Fault Indication Pin. This pin goes low when a current limit or an

over-temperature condition is detected after a 12ms deglitch time.

4

3

EN

Enable Input. Pulling this pin to high will enable the device and pulling this pin to

low will disable device. The EN pin cannot be left floating.

ENB

Enable Input. Pulling this pin to high will enable the device and pulling this pin to

low will disable device. The EN pin cannot be left floating.

5

4

VIN

Power Supply Input. Connect this pin to external DC supply.

Ordering Information

TD951X □ □ □

Circuit Type

Packing:

A/B:

A- Enable High

Blank：Tube

B- Enable Low

R:Type and Reel

T:SOT-23