LM2651

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SNVS032E – FEBRUARY 2000 – REVISED JANUARY 2016

5 Pin Configuration and Functions

PW Package

16-Pin TSSOP

Top View

Pin Functions

PIN

DESCRIPTION

NO.

NAME

1, 2

SW

O

Switched-node connection, which is connected with the source of the internal high-side MOSFET.

3 to 5

VIN

I

Main power supply pin

6

VCB

I

Bootstrap capacitor connection for high-side gate drive

7

AVIN

I

Input supply voltage for control and driver circuits

Shutdown and soft-start control pin. Pulling this pin below 0.3 V shuts off the regulator. A capacitor

8

SD(SS)

I

connected from this pin to ground provides a control ramp of the input current. Do not drive this pin

with an external source or erroneous operation may result.

9

FB

I

Output voltage feedback input. Connected to the output voltage.

10

COMP

I

Compensation network connection. Connected to the output of the voltage error amplifier.

11

NC

G

No internal connection

12 to 13

AGND

G

Low-noise analog ground

14 to 16

PGND

G

Power ground

(1)

I = Input, O = Output, and G = Ground

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