NSI45025AZT1G
Constant Current Regulator
& LED Driver
45 V, 25 mA + 10%, 1.4 W Package
The linear 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.
http://onsemi.com
I
= 25 mA
reg(SS)
@ Vak = 7.5 V
The CCR turns on immediately and is at 25% of regulation with
only 0.5 V Vak. 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. The CCR comes in thermally
robust packages and is qualified to AEC-Q101 standard.
Anode 1
Features
Cathode 2/4
• Robust Power Package: 1.4 Watts
• Wide Operating Voltage Range
• Immediate Turn-On
• Voltage Surge Suppressing − Protecting LEDs
• AEC-Q101 Qualified
SOT−223
CASE 318E
STYLE 2
• SBT (Self−Biased Transistor) Technology
• Negative Temperature Coefficient
MARKING DIAGRAM
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
C
Compliant
Applications
AYW
AAFG
G
• Automobile: Chevron Side Mirror Markers, Cluster, Display &
Instrument Backlighting, CHMSL, Map Light
• AC Lighting Panels, Display Signage, Decorative Lighting, Channel
Lettering
1
A
C
NC
• Switch Contact Wetting
• Application Note AND8391/D − Power Dissipation Considerations
• Application Note AND8349/D − Automotive CHMSL
A
Y
= Assembly Location
= Year
= Work Week
= Specific Device Code
= Pb−Free Package
W
AAF
G
MAXIMUM RATINGS (T = 25°C unless otherwise noted)
A
(Note: Microdot may be in either location)
Rating
Anode−Cathode Voltage
Reverse Voltage
Symbol
Value
Unit
V
Vak Max
45
ORDERING INFORMATION
V
R
500
mV
°C
†
Device
Package
Shipping
Operating and Storage Junction
Temperature Range
T , T
−55 to +150
J
stg
NSI45025AZT1G
SOT−223 1000/Tape & Reel
(Pb−Free)
ESD Rating: Human Body Model
Machine Model
ESD
Class 1C
Class B
†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.
Stresses exceeding Maximum Ratings may damage the device. Maximum
Ratings are stress ratings only. Functional operation above the Recommended
Operating Conditions is not implied. Extended exposure to stresses above the
Recommended Operating Conditions may affect device reliability.
©
Semiconductor Components Industries, LLC, 2009
1
Publication Order Number:
September, 2009 − Rev. 1
NSI45025AZ/D