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PDF NSI45020JZ Data sheet ( Hoja de datos )
| Número de pieza | NSI45020JZ | |
| Descripción | Adjustable Constant Current Regulator & LED Driver | |
| Fabricantes | ON Semiconductor | |
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NSI45020JZ, NSV45020JZ
Adjustable Constant Current
Regulator & LED Driver
45 V, 20 − 40 mA + 15%, 1.5 W Package
The adjustable constant current regulator (CCR) is a simple,
economical and robust device designed to provide a cost effective
solution for regulating current in LEDs (similar to Constant Current
Diode, CCD). The CCR is based on Self-Biased Transistor (SBT)
technology and regulates current over a wide voltage range. It is
designed with a negative temperature coefficient to protect LEDs from
thermal runaway at extreme voltages and currents.
The CCR turns on immediately and is at 20% of regulation with
only 0.5 V Vak. The Radj pin allows Ireg(SS) to be adjusted to higher
currents by attaching a resistor between Radj (Pin 3) and the Cathode
(Pin 4). The Radj pin can also be left open (No Connect) if no
adjustment is required. It requires no external components allowing it
to be designed as a high or low−side regulator. The high anode-
cathode voltage rating withstands surges common in Automotive,
Industrial and Commercial Signage applications. This device is
available in a thermally robust package and is qualified to stringent
AEC−Q101 standard, which is lead-free RoHS compliant and uses
halogen-free molding compound, and UL94−V0 certified.
Features
• Robust Power Package: 1.5 Watts
• Adjustable up to 40 mA
• Wide Operating Voltage Range
• Immediate Turn-On
• Voltage Surge Suppressing − Protecting LEDs
• AEC−Q101 Qualified and PPAP Capable, UL94−V0 Certified
• SBT (Self−Biased Transistor) Technology
• Negative Temperature Coefficient
• Eliminates Additional Regulation
• NSV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q101
Qualified and PPAP Capable
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
• Automobile: Chevron Side Mirror Markers, Cluster, Display &
Instrument Backlighting, CHMSL, Map Light
• AC Lighting Panels, Display Signage, Decorative Lighting, Channel
Lettering
• Switch Contact Wetting
• Application Note AND8349/D − Automotive CHMSL
• Application Note AND8391/D − Power Dissipation Considerations
© Semiconductor Components Industries, LLC, 2013
July, 2013 − Rev. 2
1
http://onsemi.com
Ireg(SS) = 20 − 40 mA
@ Vak = 7.5 V
Anode
1
2/4
Cathode
3
Radj
SOT−223
CASE 318E
STYLE 2
MARKING DIAGRAM
C
AYW
AAJG
G
1
A C Radj
A = Assembly Location
Y = Year
W = Work Week
AAJ = Specific Device Code
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
Package
Shipping†
NSI45020JZT1G SOT−223 1000/Tape & Reel
(Pb−Free)
NSV45020JZT1G SOT−223 1000/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.
Publication Order Number:
NSI45020JZ/D
1 page  
NSI45020JZ, NSV45020JZ
Figure 9.
Higher Current LED Strings
Two or more fixed current CCRs can be connected in
parallel. The current through them is additive (Figure 10).
Figure 10.
http://onsemi.com
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