Exposed Pad

Connect to GND

NC

3

FB

4

BOOT

1

NC

2

8

SW

7

VIN

6

GND

5

EN

LM22675

SNVS591K – SEPTEMBER 2008 – REVISED MARCH 2013

www.ti.com

Connection Diagram

Figure 1. 8-Lead SO PowerPAD-8 Package

See Package Number DDA0008B

PIN DESCRIPTIONS

Pin No.

Name

Description

Application Information

1

BOOT

Bootstrap input

Provides the gate voltage for the high side NFET.

2, 3

NC

Not Connected

Pins are not electrically connected inside the chip. Pins do function as

thermal conductor.

4

FB

Feedback pin

Feedback input to regulator.

5

EN

Enable Input

Used to control regulator start-up and shutdown. See Precision Enable

section of data sheet.

6

GND

Ground input to regulator;

System ground pin.

system common

7

VIN

Input Voltage

Input supply to regulator

8

SW

Switch pin

Switching output of regulator

EP

EP

Exposed Pad

Connect to ground. Provides thermal connection to PCB. See Application

Information.

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

2

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