LM3444_15 datasheet(3/27 Pages) TI1

Teilenummer	LM3444

Bauteilbeschribung	AC-DC Offline LED Driver

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Hersteller	TI1 [Texas Instruments]

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1

4

3

2

10

7

8

9

ISNS

NC

GATE

NC

COFF

VCC

NC

5

6

FILTER

GND

3

2

1

6

7

8

VCC

NC

GND

COFF

FILTER

4

5

ISNS

GATE

LM3444

www.ti.com

SNVS682D – NOVEMBER 2010 – REVISED DECEMBER 2015

5 Pin Configuration and Functions

DGS Package

D Package

10-Pin VSSOP

8-Lead SOIC

Top View

Pin Functions

I/O

DESCRIPTION

NAME

VSSOP

SOIC

OFF time setting pin. A user set current and capacitor connected from the

COFF

4

8

I

output to this pin sets the constant OFF time of the switching controller.

Filter input. A low pass filter tied to this pin can filter a PWM dimming signal to

supply a DC voltage to control the LED current. Can also be used as an analog

FILTER

5

2

I

dimming input. If not used for dimming connect a 0.1-µF capacitor from this pin

to ground.

Power MOSFET driver pin. This output provides the gate drive for the power

GATE

8

5

O

switching MOSFET of the buck controller.

GND

6

3

—

Circuit ground connection

LED current sense pin. Connect a resistor from main switching MOSFET

ISNS

7

4

I

source, ISNS to GND to set the maximum LED current.

NC

1, 2, 3, 10

1, 7

—

No internal connection. Leave this pin open.

Input voltage pin. This pin provides the power for the internal control circuitry

VCC

9

6

O

and gate driver.

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Ähnliche Beschreibung - LM3444_15

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Ähnliche Teilenummer - LM3444_15

Ähnliche Beschreibung - LM3444_15

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