LM22673-Q1 datasheet(3/29 Pages) TI

Part #	LM22673-Q1

Description	LM22673/-Q1 42 V, 3 A SIMPLE SWITCHER짰, Step-Down Voltage Regulator with Features

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Manufacturer	TI [Texas Instruments]

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Exposed Pad

Connect to GND

5 IADJ

6 FB

3 BOOT

1 SW

2 VIN

4 GND

7 SS

Exposed Pad

Connect to GND

IADJ

3

FB

4

BOOT

1

NC

2

8

SW

7

VIN

6

GND

5

SS

LM22673, LM22673-Q1

www.ti.com

SNVS586O – SEPTEMBER 2008 – REVISED NOVEMBER 2014

5 Pin Configuration and Functions

8-Pin

HSOP

Top View

7-Pin

PFM

Top View

Pin Functions

TYPE

DESCRIPTION

APPLICATION INFORMATION

SO

NAME

PFM

PowerPAD

BOOT

1

3

I

Bootstrap input

Provides the gate voltage for the high side NFET.

Pin is not electrically connected inside the chip.

NC

2

—

Not Connected

Pin does function as thermal conductor.

A resistor attached between this pin and GND can

IADJ

3

5

I

Current limit adjust input pin

be used to set the current limit threshold. Pin can

be left floating and internal setting will be default.

FB

4

6

I

Feedback input

Feedback input to regulator.

Used to increase soft-start time. See Soft-Start

SS

5

7

Soft-Start pin

section of data sheet.

Ground input to regulator;

GND

6

4

—

System ground pin.

system common

VIN

7

2

I

Input voltage

Supply input to the regulator.

SW

8

1

O

Switch output

Switching output of regulator.

Connect to ground. Provides thermal connection

EP

—

Exposed Pad

to PCB. See Thermal Considerations.

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Product Folder Links: LM22673 LM22673-Q1

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