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PDF NSIC2050JBT3G Data sheet ( Hoja de datos )
| Número de pieza | NSIC2050JBT3G | |
| Descripción | Constant Current Regulator & LED Driver | |
| Fabricantes | ON Semiconductor | |
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NSIC2050JBT3G
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.
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 rating withstands surges common in
Automotive, Industrial and Commercial Signage applications.
Features
• Robust Power Package: 2.3 W
• Wide Operating Voltage Range
• Immediate Turn-On
• Voltage Surge Suppressing − Protecting LEDs
• UL94−V0 Certified
• SBT (Self−Biased Transistor) Technology
• Negative Temperature Coefficient
• Also available in 30 mA (NSIC2030JBT1G) and 20 mA
(NSIC2020JBT1G)
• 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 and Reference/Design Documents
• Automobile: Chevron Side Mirror Markers, Cluster, Displays &
Instruments 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
• Application Note AND8433/D – A/C Application
• Application Note AND8492/D – A/C Capacitive Drop Design
• Application Note AND9098/D − Protecting a CCR from ISO 7637−2
Pulse 2A and Reverse Pulses
• Design Note DN05013 – A/C Design
• Design Note DN06065 – A/C Design with PFC
http://onsemi.com
Ireg(SS) = 50 mA
@ Vak = 7.5 V
Anode 2
Cathode 1
1
2
SMB
CASE 403A
MARKING DIAGRAM
AYWW
1
2050JG
2
G
2050J = Specific Device Code
A = Assembly Location
Y = Year
WW = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
NSIC2050JBT3G
Package
SMB
(Pb−Free)
Shipping†
2500 / Tape &
Reel
NSVC2050JBT3G SMB
(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 Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2014
April, 2014 − Rev. 1
1
Publication Order Number:
NSIC2050JB/D
1 page  
NSIC2050JBT3G
APPLICATIONS INFORMATION
The CCR is a self biased transistor designed to regulate the
current through itself and any devices in series with it. The
device has a slight negative temperature coefficient, as
shown in Figure 2 – Tri Temp. (i.e. if the temperature
increases the current will decrease). This negative
temperature coefficient will protect the LEDS by reducing
the current as temperature rises.
The CCR turns on immediately and is typically at 20% of
regulation with only 0.5 V across it.
The device is capable of handling voltage for short
durations of up to 120 V so long as the die temperature does
not exceed 175°C. The determination will depend on the
thermal pad it is mounted on, the ambient temperature, the
pulse duration, pulse shape and repetition.
AC Applications
The CCR is a DC device; however, it can be used with full
wave rectified AC as shown in application notes
AND8433/D and AND8492/D and design notes
DN05013/D and DN06065/D. Figure 8 shows the basic
circuit configuration.
Figure 8. Basic AC Application
Single LED String
The CCR can be placed in series with LEDs as a High Side
or a Low Side Driver. The number of the LEDs can vary
from one to an unlimited number. The designer needs to
calculate the maximum voltage across the CCR by taking the
maximum input voltage less the voltage across the LED
string (Figures 9 and 10).
Figure 9.
Figure 10.
http://onsemi.com
5
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| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NSIC2050JBT3G.PDF ] | |
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