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NSI45025AZ

Constant Current Regulator & LED Driver

ON Semiconductor 

NSI45025AZ, NSV45025AZ

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 (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 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, and

UL94−V0 certified.

Features

• Robust Power Package: 1.4 Watts

• Wide Operating Voltage Range & Immediate Turn-On

• Voltage Surge Suppressing − Protecting LEDs

• SBT (Self−Biased Transistor) Technology

• Negative Temperature Coefficient

• 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 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

MAXIMUM RATINGS (TA = 25°C unless otherwise noted)

Rating

Symbol

Value

Unit

Anode−Cathode Voltage

Vak Max

45

V

Reverse Voltage

Operating and Storage Junction

Temperature Range

VR

500

mV

TJ, Tstg −55 to +150 °C

ESD Rating: Human Body Model

Machine Model

ESD

Class 1C

Class B

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.

http://onsemi.com

Ireg(SS) = 25 mA

@ Vak = 7.5 V

Anode 1

Cathode 2/4

SOT−223

CASE 318E

STYLE 2

MARKING DIAGRAM

C

AYW

AAFG

G

1

A C NC

A

= Assembly Location

Y

= Year

W

= Work Week

AAF = Specific Device Code

G

= Pb−Free Package

(Note: Microdot may be in either location)

ORDERING INFORMATION

Device

NSI45025AZT1G

Package

Shipping†

SOT−223 1000/Tape & Reel

(Pb−Free)

NSV45025AZT1G 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.

© Semiconductor Components Industries, LLC, 2013

1

July, 2013 − Rev. 3

Publication Order Number:

NSI45025AZ/D

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