NSI45090DDT4G Datasheet, PDF (1/6 Pages) ON Semiconductor – Adjustable Constant Current Regulator & LED Driver

NSI45090DDT4G
Adjustable Constant Current
Regulator & LED Driver
45 V, 90 − 160 mA + 15%, 2.7 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. The CCR is based on
patent- pending 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 R_adj pin allows I_reg(SS) to be adjusted to higher
currents by attaching a resistor between R_adj (Pin 3) and the Cathode
(Pin 4). The R_adj 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, which is lead-free RoHS
compliant and uses halogen- free molding compound. For the
AEC−Q101 part please see the NSI45090JD datasheet.
Features
• Robust Power Package: 2.7 Watts
• Adjustable up to 160 mA
• Wide Operating Voltage Range
• Immediate Turn-On
• Voltage Surge Suppressing − Protecting LEDs
• SBT (Self−Biased Transistor) Technology
• Negative Temperature Coefficient
• Eliminates Additional Regulation
• 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 AND8391/D − Power Dissipation Considerations
• Application Note AND8349/D − Automotive CHMSL
http://onsemi.com
I_reg(SS) = 90 − 160 mA
@ Vak = 7.5 V
Anode
1
3
R_adj
4
Cathode
4
12
3
DPAK
CASE 369C
MARKING DIAGRAM
1
A
YWW
NSI
C
R_adj
90DG
Y
= Year
WW = Work Week
NSI90D = Specific Device Code
G
= Pb−Free Package
ORDERING INFORMATION
Device
Package
Shipping^†
NSI45090DDT4G DPAK 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 Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2010
1
February, 2010 − Rev. 0
Publication Order Number:
NSI45090DD/D