?Semiconductor Components Industries, LLC, 2010
February, 2010 Rev. 0
1
Publication Order Number:
NSI45090DD/D
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 lowside 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
AECQ101 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 (SelfBiased Transistor) Technology
" Negative Temperature Coefficient
" Eliminates Additional Regulation
" These Devices are PbFree, 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
DPAK
CASE 369C
MARKING DIAGRAM
Device
Package
Shipping
ORDERING INFORMATION
NSI45090DDT4G
DPAK
(PbFree)
2500/Tape & Reel
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.
Anode
1
4
Cathode
1
Y
= Year
WW
= Work Week
NSI90D = Specific Device Code
G
= PbFree Package
C
A
I
reg(SS)
= 90 160 mA
@ Vak = 7.5 V
R
adj
3
R
adj
1
2
3
4
YWW
NSI
90DG
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