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PDF NUD4700 Data sheet ( Hoja de datos )
| Número de pieza | NUD4700 | |
| Descripción | LED Shunt | |
| Fabricantes | ON Semiconductor | |
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Hay una vista previa y un enlace de descarga de NUD4700 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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NUD4700
LED Shunt
The NUD4700 is an electronic shunt which provides a current bypass
in the case of a single LED going into open circuit. LEDs are by nature
quite fragile when subjected to transients and surge conditions. There
are also many cases where high reliability of the LED lighting must be
maintained such as headlights, lighthouses, bridges, aircraft, runways
and so forth. In these cases the low cost addition of the NUD4700 will
provide full assurance that an entire string of LEDs will not extinguish
should one LED fail. NUD4700 is also applicable to other loads where
circuit continuity is required. This device is designed to be used with
1 W LEDs (nominally 350 mA @ 3 V).
Features
• A Simple Two Terminal Device
• Automatically Resets Itself if the LED Heals Itself or is Replaced
• ON−State Voltage Typically 1 V
• OFF−State Current less than 250 mA
• This is a Pb−Free Device
Typical Applications
• LEDs where Preventive Maintenance is Non Practical
• LED Headlights
• LEDs with High Reliability Requirements
• Crowbar Protection for Open Circuit Conditions
• Overvoltage Protection for Sensitive Circuits
http://onsemi.com
Anode
Control
Circuit
Cathode
Anode
Cathode
POWERMITE[
CASE 457
PLASTIC
MARKING DIAGRAM
Anode
M
MNHG
Cathode
M = Date Code
MNH = Device Code
G = Pb−Free Package
PIN FUNCTION DESCRIPTION
Pin Description
Anode
Cathode
Positive Input Voltage to the Device
Negative Input Voltage to the Device
www.DataSheet4U.com
ORDERING INFORMATION
Device
Package
Shipping†
NUD4700SNT1G POWERMITE 3000/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 Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2010
March, 2010 − Rev. 8
1
Publication Order Number:
NUD4700/D
1 page  
NUD4700
TYPICAL OPERATION WAVEFORMS
LED Current
NUD4700 voltage
Off state
NUD4700 switching
waveforms (Powermite)
Switching event
LED being opened
NUD4700 voltage
ON−state
Figure 8. NUD4700 Switching Waveforms
Current overshoot
due to response time
of current source
Switching event
LED being opened
LED Current
NUD4700 voltage
Off state
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NUD4700 switching
waveforms (zoom in)
NUD4700 voltage
ON−state
Figure 9. Zoom in of Figure 8
http://onsemi.com
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet NUD4700.PDF ] | |
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