ZXSC410/ZXSC420/ZXSC440

Document number: DS33618 Rev. 5 - 2

2 of 17

www.diodes.com

March 2013

© Diodes Incorporated

ZXSC410/ZXSC420/ZXSC440

Pin Descriptions

Pin Name

Pin Number

Function

ZXSC410

ZXSC420

ZXSC440

1

1

8

Supply Voltage

GND

2

2

7

Ground

STDN

3

—

5

Shutdown (ZXSC410 and ZXSC440)

EOR

—

3

6

End of regulation (ZXSC420 and ZXSC440)

Sense

4

4

3

Inductor current sense input. Internal threshold voltage set to 28mV.

Connect external sense resistor.

5

5

2

Reference voltage. Internal threshold set to 300mV.

Connect external resistor network to set output voltage.

Drive

6

6

1

Drive output for external switching transistor.

Connect to base or gate of external switching transistor.

NC

—

—

4

No connection

Functional Block Diagram