NUD4001 datasheet(1/8 Pages) ONSEMI

Part #	NUD4001

Description	High Current LED Driver

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Manufacturer	ONSEMI [ON Semiconductor]

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June, 2006 − Rev. 6

1

Publication Order Number:

NUD4001/D

NUD4001

High Current LED Driver

This device is designed to replace discrete solutions for driving

LEDs in low voltage AC−DC applications 5.0 V, 12 V or 24 V. An

external resistor allows the circuit designer to set the drive current for

different LED arrays. This discrete integration technology eliminates

individual components by combining them into a single package,

which results in a significant reduction of both system cost and board

space. The device is a small surface mount package (SO–8).

Features

• Supplies Constant LED Current for Varying Input Voltages

• External Resistor Allows Designer to Set Current – up to 500 mA

• Offered in Surface Mount Package Technology (SO−8)

• Pb−Free Package is Available

Benefits

• Maintains a Constant Light Output During Battery Drain

• One Device can be used for Many Different LED Products

• Reduces Board Space and Component Count

• Simplifies Circuit and System Designs

Typical Applications

• Portables: For Battery Back−up Applications, also Simple Ni−CAD

Battery Charging

• Industrial: Low Voltage Lighting Applications and Small Appliances

• Automotive: Tail Lights, Directional Lights, Back−up Light,

Dome Light

PIN FUNCTION DESCRIPTION

Symbol

Description

1

Vin

Positive input voltage to the device

2

Boost

This pin may be used to drive an external transistor

as described in the App Note AND8198/D.

3

Rext

An external resistor between Rext and Vin pins sets

different current levels for different application needs

4

GND

Ground

5, 6, 7, 8

Iout

The LEDs are connected from these pins to ground

http://onsemi.com

Device

Package

Shipping†

ORDERING INFORMATION

NUD4001DR2

SO−8

2500 / Tape & Reel

SO−8

CASE 751

STYLE 25

PIN CONFIGURATION

AND SCHEMATIC

1

8

Rext

GND

Vin

Iout

Current

Set Point

4001 = Specific Device Code

A

= Assembly Location

Y

= Year

WW = Work Week

G

= Pb−Free Device

MARKING

DIAGRAM

Boost

Iout

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

1

2

3

4

8

7

6

5

NUD4001DR2G

SO−8

(Pb−Free)

2500 / Tape & Reel

4001

AYWW

G

1

8

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