1

2

3

4

5

6

7

8

BYPASS

N/C

GROUND

INPUT

SENSE

OUTPUT

SHUTDOWN

N/C

1

2

3

4

8

7

6

5

GND

BYPASS

N/C

GROUND

INPUT

SENSE

OUTPUT

N/C

SHUTDOWN

4

+

-

5

2

7

3

8

6

1

+

1.23V

LP3879-X.X

*0.01 PF

(See App

Hints)

*4.7 PF

**S/D

+

*10 PF

+

OUTPUT

(Ceramic or

Tantalum

recommended)

N/C

(Ceramic

recommended)

N/C

LP3879

SNVS396B – MAY 2006 – REVISED APRIL 2013

www.ti.com

Basic Application Circuit

*Capacitance values shown are minimum required to assure stability. Larger output capacitor provides improved

dynamic response. Output capacitor must meet ESR requirements (see Application Information).

**The Shutdown pin must be actively terminated (see Application Information). Tie to INPUT (Pin 4) if not used.

Connection Diagram

Figure 1. Top View

Figure 2. Top View

8-Lead SO PowerPad

8-Lead WSON

See DDA0008B Package

See NGT0008A Package

PIN DESCRIPTIONS

Pin

Name

Function

1

BYPASS

The capacitor connected between BYPASS and GROUND lowers output noise voltage

level and is required for loop stability.

2

N/C

DO NOT CONNECT. This pin is used for post package test and must be left floating.

3

GROUND

Device ground.

4

INPUT

Input source voltage.

5

OUTPUT

Regulated output voltage.

6

SENSE

Remote Sense. Tie directly to output or remotely at point of load for best regulation.

7

N/C

No internal connection.

8

SHUTDOWN

Output is enabled above turn-on threshold voltage. Pull down to turn off regulator output.

SO PowerPad,

SUBSTRATE

The exposed die attach pad should be connected to a thermal pad at ground potential. For

WSON

GROUND

additional information on using Texas Instruments' Non Pull Back WSON package, please

refer to WSON application note SNOA401

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

2

Submit Documentation Feedback

Copyright © 2006–2013, Texas Instruments Incorporated

Product Folder Links: LP3879