Pin Description

Pin

Name

Function

1-2

SW

Switched-node connection, which is connected to the source of the internal high-side

MOSFET.

3-5

PV

IN

Main power supply input pin. Connected to the drain of the internal high-side MOSFET.

6V

CB

Bootstrap capacitor connection for high-side gate drive.

7AV

IN

Input voltage for control and drive circuits.

8

SD(SS)

Shutdown control input, active low. This pin can also function as soft-start control pin.

Connect a capacitor from this pin to ground.

9

FB

Output voltage feedback input. Connected to the output voltage.

10

COMP

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

amplifier.

11

L

DELAY

A capacitor between this pin to ground sets the delay from when the output voltage

reaches 80% of its nominal to when the undervoltage latch protection is enabled.

12

LDR

Low-side FET gate drive pin.

13

GND

Power ground.

14-16

PV

IN

Main power supply input pin. Connected to the drain of the internal high-side MOSFET.

Ordering Information

Supplied as 1000 units

Tape and Reel

Supplied as 3000 units,

Tape and Reel

LM2655MTC-3.3

LM2655MTCX-3.3

LM2655MTC-ADJ

LM2655MTCX-ADJ

www.national.com

3