Ordering Information

V

Order Number

Package Type

Package Drawing

Supplied As

0.8V

LP38859S-0.8

TO263-5

TS5B

Rail of 45

LP38859SX-0.8

TO263-5

TS5B

Tape and Reel of 500

LP38859T-0.8

TO220-5

T05D

Rail of 45

1.2V

LP38859S-1.2

TO263-5

TS5B

Rail of 45

LP38859SX-1.2

TO263-5

TS5B

Tape and Reel of 500

LP38859T-1.2

TO220-5

T05D

Rail of 45

Connection Diagrams

20131202

TO263–5, Top View

20131203

TO220–5, Top View

Pin Descriptions

TO220–5 and TO263–5 Packages

Pin #

Pin Symbol

Pin Description

1

SS

Soft-Start capacitor connection. Used to slow the rise time of V

2

IN

The unregulated voltage input pin.

3

GND

Ground

4

OUT

The regulated output voltage pin.

5

BIAS

The supply for the internal control and reference circuitry.

TAB

TAB

The TAB is a thermal connection that is physically attached to the backside of

the die, and used as a thermal heat-sink connection. See the Application

Information section for details.

www.national.com

2