GND

FB

OUT

NC

NC

EN

IN

NC

1

2

3

4

8

7

6

5

PowerPAD

V

= 0.5 x (

)

OUT

1 +

R

1

R

2

Thermal

Protection

OUT

V

OUT

IN

EN

Hysteresis

Current

Limit

UVLO

GND

Charge

Pump

0.5V Reference

R

1

R

2

FB

TPS7A7001

www.ti.com

SBVS134A – JANUARY 2012 – REVISED JUNE 2012

FUNCTIONAL BLOCK DIAGRAM

Figure 1. Adjustable Output Voltage Version

PIN CONFIGURATIONS

DDA PACKAGE

SOIC-8

(TOP VIEW)

Pin Descriptions

NAME

PIN #

DESCRIPTION

EN

2

This pin is the output voltage feedback input through voltage dividers. See the recommended feedback

FB

7

resistor table for more details.

GND

8

Ground pin

IN

3

Unregulated supply voltage pin. It is recommended to connect an input capacitor to this pin.

Not internally connected. The NC pins are not connected to any electrical node. It is recommended to

NC

1, 4, 5

connect the NC pins to large-area planes.

OUT

6

Regulated output pin. A 4.7-

μF or larger capacitor of any type is required for stability.

It is strongly recommended to connect the thermal pad to a large-area ground plane. If an electrically

PowerPAD

floating, dedicated thermal plane is available, the thermal pad can also be connected to it.

Copyright © 2012, Texas Instruments Incorporated

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