NSI50350AST3G Datasheet NSI50350AST3G, NSV50350AST3G | P1-P3

August, 2014 − Rev. 5

1 Publication Order Number:

NSI50350AS/D

NSI50350AST3G

Constant Current Regulator

& LED Driver

50 V, 350 mA + 10%, 5.8 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 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. 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.

Also available in DPAK: NSI50350ADT4G.

Features

• Robust Power Package: 5.8 W

• Wide Operating Voltage Range

• Immediate Turn−On

• Voltage Surge Suppressing − Protecting LEDs

• UL94−V0 Certified

• 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/BFR Free and are RoHS

Compliant

Typical Applications

• Automobile: Chevron Side Mirror Markers, Cluster, Display &

Instrument Backlighting, CHMSL, Map Light

• AC Lighting Panels, Display Signage, Decorative Lighting, Channel

Lettering

• Application Note AND8349/D − Automotive CHMSL

• Application Notes AND8391/D, AND9008/D − Power Dissipation

Considerations

Mechanical Characteristics

• CASE: Void-free, transfer-molded, thermosetting plastic

• FINISH: All external surfaces are corrosion resistant and leads are

readily solderable

• MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:

260°C for 10 seconds

• LEADS: Modified L−Bend providing more contact area to bond pads

• POLARITY: Cathode indicated by molded polarity notch

• MOUNTING POSITIONS: Any

http://onsemi.com

SMC

CASE 403

MARKING DIAGRAM

(Note: Microdot may be in either location)

Anode 2

Cathode 1

reg(SS)

= 350 mA

@ Vak = 7.5 V

AYWW

350AG

350A = Specific Device Code

A = Assembly Location

Y = Year

WW = Work Week

G = Pb−Free Package

Device Package Shipping

†

ORDERING INFORMATION

NSI50350AST3G SMC

(Pb−Free)

2500 / Tape &

Reel

NSV50350AST3G SMC

(Pb−Free)

2500 / Tape &

Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

NSI50350AST3G

http://onsemi.com

MAXIMUM RATINGS (T

= 25°C unless otherwise noted)

Rating

Symbol Value Unit

Anode−Cathode Voltage Vak Max 50 V

Reverse Voltage V

500 mV

Operating and Storage Junction Temperature Range T

, T

stg

−55 to +175 °C

ESD Rating: Human Body Model

Machine Model

ESD Class 3B (8000 V)

Class C (400 V)

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality

should not be assumed, damage may occur and reliability may be affected.

ELECTRICAL CHARACTERISTICS (T

= 25°C unless otherwise noted)

Characteristic

Symbol Min Typ Max Unit

Steady State Current @ Vak = 7.5 V (Note 1) I

reg(SS)

315 350 385 mA

Voltage Overhead (Note 2) V

overhead

1.8 V

Pulse Current @ Vak = 7.5 V (Note 3) I

reg(P)

405.5 460 516.5 mA

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

1. I

reg(SS)

steady state is the voltage (Vak) applied for a time duration ≥ 300 sec, using 900 mm

DENKA K1, 1.5 mm Al, 2kV Thermally

conductive dielectric, 2 oz. Cu (or equivalent), in still air.

2. V

overhead

= V

− V

LEDs

. V

overhead

is typical value for 70% I

reg(SS)

3. I

reg(P)

non−repetitive pulse test. Pulse width t ≤ 360 msec.

Figure 1. CCR Voltage−Current Characteristic

NSI50350AST3G

http://onsemi.com

THERMAL CHARACTERISTICS

Characteristic Symbol Max Unit

Total Device Dissipation (Note 4) T

= 25°C

Derate above 25°C

3112

20.75

mW/°C

Thermal Resistance, Junction−to−Ambient (Note 4)

48.2 °C/W

Thermal Reference, Junction−to−Tab (Note 4)

8.7 °C/W

Total Device Dissipation (Note 5) T

= 25°C

Derate above 25°C

4225

28.17

mW/°C

Thermal Resistance, Junction−to−Ambient (Note 5)

35.5 °C/W

Thermal Reference, Junction−to−Tab (Note 5)

8.0 °C/W

Total Device Dissipation (Note 6) T

= 25°C

Derate above 25°C

5119

34.13

mW/°C

Thermal Resistance, Junction−to−Ambient (Note 6)

29.3 °C/W

Thermal Reference, Junction−to−Tab (Note 6)

7.2 °C/W

Total Device Dissipation (Note 7) T

= 25°C

Derate above 25°C

5859

39.06

mW/°C

Thermal Resistance, Junction−to−Ambient (Note 7)

25.6 °C/W

Thermal Reference, Junction−to−Tab (Note 7)

6.9 °C/W

Total Device Dissipation (Note 8) T

= 25°C

Derate above 25°C

3061

20.41

mW/°C

Thermal Resistance, Junction−to−Ambient (Note 8)

49 °C/W

Thermal Reference, Junction−to−Tab (Note 8)

15.1 °C/W

NOTE: Lead measurements are made by non−contact methods such as IR with treated surface to increase emissivity to 0.9.

Lead temperature measurement by attaching a T/C may yield values as high as 30% higher °C/W values based upon empirical

measurements and method of attachment.

4. 400 mm

, see below PCB description, still air.

5. 900 mm

, see below PCB description, still air.

6. 1600 mm

, see below PCB description, still air.

7. 2500 mm

, see below PCB description, still air.

(For NOTES 4−7: PCB is DENKA K1, 1.5 mm Al, 2kV Thermally conductive dielectric, 2 oz. Cu, or equivalent).

8. 1000 mm

, FR4, 3 oz Cu, still air.

P1-P3 P4-P6 P7-P8

NSI50350AST3G

Mfr. #:

Buy NSI50350AST3G

Manufacturer:

ON Semiconductor

Description:

LED Lighting Drivers SMC 350MA

Lifecycle:

New from this manufacturer.

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NSI50350AST3G

NSI50350AST3G

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