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DEVICE INFORMATION

OUT

OUT

FB

SS

GND

10

9

8

7

6

IN

IN

PG

BIAS

EN

1

2

3

4

5

Thermal

Pad

PIN DESCRIPTIONS

TPS74701

SBVS099A – NOVEMBER 2007 – REVISED NOVEMBER 2007

DRC PACKAGE

3mm

× 3mm SON

(TOP VIEW)

TPS74701

NAME

PIN #

DESCRIPTION

IN

1, 2

Input to the device.

Enable pin. Driving this pin high enables the regulator. Driving this pin low puts the regulator into

EN

5

shutdown mode. This pin must not be left unconnected.

SS

7

Soft-Start pin. A capacitor connected on this pin to ground sets the start-up time. If this pin is left

unconnected, the regulator output soft-start ramp time is typically 200

µs.

BIAS

4

Bias input voltage for error amplifier, reference, and internal control circuits.

below this threshold the pin is driven to a low-impedance state. A pull-up resistor from 10k

Ω to

PG

3

1M

Ω should be connected from this pin to a supply of up to 5.5V. The supply can be higher than

the input voltage. Alternatively, the PG pin can be left unconnected if output monitoring is not

necessary.

Feedback pin. The feedback connection to the center tap of an external resistor divider network

FB

8

that sets the output voltage. This pin must not be left floating.

OUT

9, 10

Regulated output voltage. A small capacitor (total typical capacitance

≥ 2.2

µF, ceramic) is

needed from this pin to ground to assure stability.

NC

N/A

No connection. This pin can be left floating or connected to GND to allow better thermal contact

to the top-side plane.

GND

6

Ground

Thermal Pad

—

Should be soldered to the ground plane for increased thermal performance.

Copyright © 2007, Texas Instruments Incorporated

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Product Folder Link(s): TPS74701