NSIC2050BT3G
Constant Current Regulator
& LED Driver for A/C off-line
Applications
120 V, 50 mA + 15%, 3 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.
http://onsemi.com
I
= 50 mA
reg(SS)
@ Vak = 7.5 V
Anode 2
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 120 V anode−cathode voltage rating is designed to withstand
the high peak voltage incurred in A/C offline applications. The high
anode−cathode voltage also protects surges common in Industrial and
Commercial Signage applications. The CCR comes in thermally
robust packages and is UL94−V0 Certified.
Cathode 1
1
Features
• Robust Power Package: 2.3 W
• Wide Operating Voltage Range
• Immediate Turn-On
• Voltage Surge Suppressing − Protecting LEDs
• UL94−V0 Certified
2
SMB
CASE 403A
MARKING DIAGRAM
• SBT (Self−Biased Transistor) Technology
• Negative Temperature Coefficient
• Also available in 30 mA (NSIC2030BT1G) and 20 mA
(NSIC2020BT1G)
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
AYWW
1
2
2050G
G
2050
A
= Specific Device Code
= Assembly Location
= Year
= Work Week
= Pb−Free Package
Y
Typical Applications
• AC Lighting Panels, Display Signage, Decorative Lighting, Channel
Lettering
WW
G
(Note: Microdot may be in either location)
• Application Note AND8433/D – A/C Application
ORDERING INFORMATION
• Application Note AND8493/D – A/C Capacitive Drop Design
• Design Note DN05013 – A/C Design
†
Device
Package
Shipping
2500 / Tape & Reel
• Design Note DN06065 – A/C Design with PFC
• Application Notes AND8391/D, AND9008/D − Power Dissipation
Considerations
• Automotive Applications − Consult Factory
NSIC2050BT3G
SMB
(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, 2012
1
Publication Order Number:
June, 2012 − Rev. 0
NSIC2050B/D