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PDF NUD4001 Data sheet ( Hoja de datos )
| Número de pieza | NUD4001 | |
| Descripción | High Current LED Driver | |
| Fabricantes | ON Semiconductor | |
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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
Pin 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
5, 6, 7, 8
GND
Iout
Ground
The LEDs are connected from these pins to ground
http://onsemi.com
PIN CONFIGURATION
AND SCHEMATIC
Vin 1
Boost 2
Rext 3
GND 4
Current
Set Point
8 Iout
7 Iout
6 Iout
5 Iout
8
1
SO−8
CASE 751
STYLE 25
MARKING
DIAGRAM
8
4001
AYWW
G
1
4001 = Specific Device Code
A = Assembly Location
Y = Year
WW = Work Week
G = Pb−Free Device
ORDERING INFORMATION
Device
Package
Shipping†
NUD4001DR2
SO−8 2500 / Tape & Reel
NUD4001DR2G SO−8 2500 / Tape & Reel
(Pb−Free)
†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.
© Semiconductor Components Industries, LLC, 2006
June, 2006 − Rev. 6
1
Publication Order Number:
NUD4001/D
1 page  
D1
1N4004
R1
2.7 W, 1/4 W
Vbat +
13.5 Vdc −
NUD4001
TYPICAL APPLICATION CIRCUITS
Q1
1
8
27
3 NUD4001 6
45
R3
2.7 W, 1/4 W
R2
32 W, 5.0 W
Q2
1
8
27
3 NUD4001 6
45
R4
32 W, 5.0 W
R3
6.7 W, 4.0 W
LED1
Luxeon
Emitter
550 mA
0 Figure 7. Stop light automotive circuit using the NUD4001 device
to drive one high current LED (550 mA).
D1
1N4004
R1
7.0 W, 1/4 W
Vbat +
13.5 Vdc −
Q1
1
8
27
3 NUD4001 6
45
R2
7.0 W, 1/4 W
Q2
1
8
27
3 NUD4001 6
45
R3
27 W, 2.0 W
LED1
Luxeon
Emitter
220 mA
0 Figure 8. Dome light automotive circuit using the NUD4001 device
to drive one LED (220 mA).
http://onsemi.com
5
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| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NUD4001.PDF ] | |
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