3

2

4

5

1

NR/FB

OUT

GND

IN

EN

3

2

4

5

1

NR/FB

OUT

GND

IN

EN

TPS72301, TPS72325

www.ti.com

SLVS346C – SEPTEMBER 2003 – REVISED SEPTEMBER 2014

5 Pin Configuration and Functions

DBV PACKAGE

DDC PACKAGE

SOT23-5

SOT-5

Top View

Top View

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

GND

1

—

Ground

IN

2

I

Input supply

Bipolar enable pin. Driving this pin above the positive enable threshold or below the negative enable

EN

3

I

threshold turns on the regulator. Driving this pin below the positive disable threshold and above the

negative disable threshold puts the regulator into shutdown mode.

Fixed voltage versions only. Connecting an external capacitor between this pin and ground, bypasses

NR

4

—

noise generated by the internal bandgap. This configuration allows output noise to be reduced to very

low levels.

Adjustable voltage version only. This pin is the input to the control loop error amplifier. It is used to set

FB

4

I

the output voltage of the device.

Regulated output voltage. A small, 2.2-

μF ceramic capacitor is needed from this pin to GND to ensure

OUT

5

O

stability.

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