IN

EN

NR

OUT

GND

Current

Limit

Thermal

Shutdown

UVLO

1.20 V

Bandgap

225 kW

Quick-Start

Adjustable

0.8 V

33 kW

58.7 kW

33 kW

FB

15 pF

TPS7A8101

IN

NR

IN

EN

6

7

8

5

4

OUT

OUT

FB/SNS

GND

1

2

3

TPS7A8101

www.ti.com

SBVS179A – DECEMBER 2011 – REVISED APRIL 2012

FUNCTIONAL BLOCK DIAGRAM

Figure 1. Functional Block Diagram

PIN CONFIGURATION

DRB PACKAGE

3mm x 3mm SON-8

(TOP VIEW)

PIN DESCRIPTIONS

PIN

NAME

NO.

DESCRIPTION

Driving this pin high turns on the regulator. Driving this pin low puts the regulator into shutdown mode. Refer

EN

5

to the Shutdown section for more details. EN must not be left floating and can be connected to IN if not

used.

FB

3

This pin is the input to the control-loop error amplifier and is used to set the output voltage of the device.

GND

4, pad

Ground

IN

7, 8

Unregulated input supply

Connect an external capacitor between this pin and ground to reduce output noise to very low levels. The

NR

6

OUT

1, 2

Regulator output. A 4.7-

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

Copyright © 2011–2012, Texas Instruments Incorporated

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