NSI45025AZ: LED Driver, Constant Current Regulator, 25 mA, 45 V

The linear constant current regulator 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 constant current regulator 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 constant current regulator 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 constant current regulator comes in thermally robust packages and is qualified to AEC-Q101 standard, and UL94-V0 certified.

Features
  • Robust Power Package: 1.4 W, Wide operating voltage range, Immediate turn on, Voltage surge suppressing - protecting LEDs, UL94-V0 certified SBT (Self Biased Transistor) Technology, Negative Temperature Coefficient, This device is PB-Free, Halogen Free/BFR Free and is RoHS Compliant
  • NSV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q101 Qualified and PPAP Capable
Benefits
  • High or Low side control, Simple Battery Charge, Reduce LED binning and therefore inventory, NO EMI
Applications
  • LED Drive, Battery Charging, Contact Wetting
End Products
  • Automotive - Cluster & Central Console Backlighting, Navigation/Audio Systems, Vanity Mirror Light, Car Door Puddle Light, Ambience Lighting, CHMSL, Turn Signals, Side Repeaters, Tail Lamps, Brake Lighting, Trailer lights & Contact Wetting. Display & Signage - Channel letters, Display backlighting, Neon bulb replacements, LED stripes & modules. Architectural lighting Decorative, Task, Exterior, Landscape & Under counter. Computing and Industrial Indicator lamps, Backlights
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
45 V, 25 mA ± 10%, 1.4 W package, Constant Current Regulator, SOT-223NSI45025AZ/D (169.0kB)3
Tutorials (3)
Document TitleDocument ID/SizeRevisionRevision Date
Constant Current Regulator Driver for T8 Fluorescent Tube Light (VoPPT)TND402/D (6913.0kB)0Aug, 2010
Constant Current Regulator Solutions for Driving LEDs (VoPPT)TND403/D (24138.0kB)5Aug, 2012
Constant Current Regulators For Automotive Interior Lighting ApplicationsTND6023/D (10759.0kB)0Nov, 2013
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOT-223 (TO-261) 4 LEAD318E-04 (68.4kB)N
Application Notes (11)
Document TitleDocument ID/SizeRevisionRevision Date
Automotive Applications: The Use of Discrete Constant Current Regulators (CCR) For CHMSL LightingAND8349/D (188kB)3Jan, 2014
Capacitive Drop Drive Topology with Constant Current Regulator to Drive LEDsAND8492/D (239.0kB)2
How To Use Thermal Data Found in Data SheetsAND8220/D (208.0kB)0
In-Driver Voltage Protection Techniques for Constant Current RegulatorsAND9179/D (224kB)1Jun, 2015
Optimizing CCR Protection for Minimal Part CountAND9203/D (112kB)0Feb, 2015
Predicting Thermal RunawayAND8223/D (104.0kB)0
Predicting the Effect of Circuit Boards on Semiconductor Package Thermal PerformanceAND8222/D (187.0kB)0
Protecting a CCR from ISO 7637-2 Pulse 2A and Reverse PulsesAND9098/D (102kB)2Jan, 2016
Simple Battery Charger using a CCRAND9031/D (199kB)3
Thermal Considerations for the ON Semiconductor Family of Discrete Constant Regulators (CCR) for Driving LEDs in Automotive ApplicationsAND8391/D (98kB)4Jun, 2014
Using ON Semiconductor's Constant Current Regulators in AC ApplicationsAND8433/D (493.0kB)1
Simulation Models (4)
Document TitleDocument ID/SizeRevisionRevision Date
HowToUseCCRModels.pptxHowToUseCCRModels (1536kB)1Aug, 2014
LTSpice ModelNSI45025AZT1G.SP (16kB)0Aug, 2014
LTSpiceCCRSymbolsCCR_LTSpiceSymbols (8kB)0Aug, 2014
PSpice ModelNSI45025AZT1G.LIB (7kB)2
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NSI45025AZT1GActiveAEC Qualified Pb-free Halide freeSOT-223-4 / TO-261-4318E-041Tape and Reel1000$0.132
NSV45025AZT1GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOT-223-4 / TO-261-4318E-041Tape and Reel1000$0.1947
Specifications
ProductVI Max (V)IO Max (mA)LEDs in Series, Max #LEDs in Parallel, Max #
NSI45025AZT1G Design it45258016
NSV45025AZT1G Design it45258016
45 V, 25 mA ± 10%, 1.4 W package, Constant Current Regulator, SOT-223 (169.0kB) NSI45025AZ
Constant Current Regulator Driver for T8 Fluorescent Tube Light (VoPPT) NSIC2050JB
Constant Current Regulator Solutions for Driving LEDs (VoPPT) NSIC2050JB
Constant Current Regulators For Automotive Interior Lighting Applications NSIC2050JB
Automotive Applications: The Use of Discrete Constant Current Regulators (CCR) For CHMSL Lighting NSIC2050JB
Capacitive Drop Drive Topology with Constant Current Regulator to Drive LEDs NSIC2050JB
How To Use Thermal Data Found in Data Sheets NGTB15N60EG
In-Driver Voltage Protection Techniques for Constant Current Regulators NSIC2050JB
Optimizing CCR Protection for Minimal Part Count NSIC2050JB
Predicting Thermal Runaway NSIC2050JB
Predicting the Effect of Circuit Boards on Semiconductor Package Thermal Performance NGTB15N60EG
Protecting a CCR from ISO 7637-2 Pulse 2A and Reverse Pulses MURA160
Simple Battery Charger using a CCR NSR20F30NX
Thermal Considerations for the ON Semiconductor Family of Discrete Constant Regulators (CCR) for Driving LEDs in Automotive Appl NSIC2050JB
Using ON Semiconductor's Constant Current Regulators in AC Applications NSIC2050JB
HowToUseCCRModels.pptx NSIC2050JB
LTSpice Model NSI45025AZ
LTSpiceCCRSymbols NSIC2050JB
PSpice Model NSI45025AZ
SOT-223 (TO-261) 4 LEAD NCV8452
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