IN

GND

EN

NR/FB

OUT

1

2

3

4

5

TPS731

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SBVS034N – SEPTEMBER 2003 – REVISED DECEMBER 2015

5 Pin Configuration and Functions

DBV Package

5-Pin SOT-23

Top View

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

IN

1

I

Input supply.

GND

2

—

Ground.

Driving the enable pin (EN) high turns on the regulator. Driving this pin low puts the regulator into

EN

3

I

shutdown mode. Refer to Enable Pin and Shutdown for more details. EN can be connected to IN if not

used.

Fixed-voltage versions only—connecting an external capacitor to this pin bypasses noise generated by

NR

4

—

the internal bandgap, reducing output noise to very low levels.

Adjustable-voltage version only—this is the input to the control loop error amplifier, and is used to set the

FB

4

I

output voltage of the device.

OUT

5

O

Output of the regulator. There are no output capacitor requirements for stability.

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