NSI45090JDT4G
Adjustable Constant Current
Regulator & LED Driver
45 V, 90 − 160 mA
+
15%, 2.7 W Package
The adjustable 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. The R
adj
pin allows I
reg(SS)
to be adjusted to higher
currents by attaching a resistor between R
adj
(Pin 3) and the Cathode
(Pin 4). The R
adj
pin can also be left open (No Connect) if no
adjustment is required. 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. This device is
available in a thermally robust package and is qualified to stringent
AEC−Q101 standard, which is lead-free RoHS compliant and uses
halogen-free molding compound, and UL94−V0 certified.
Features
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I
reg(SS)
= 90 − 160 mA
@ Vak = 7.5 V
Anode
1
3
R
adj
4
Cathode
4
1 2
3
DPAK
CASE 369C
•
•
•
•
•
•
•
•
•
•
Robust Power Package: 2.7 Watts
Adjustable up to 160 mA
Wide Operating Voltage Range
Immediate Turn-On
Voltage Surge Suppressing − Protecting LEDs
UL94−V0 Certified
SBT (Self−Biased Transistor) Technology
Negative Temperature Coefficient
Eliminates Additional Regulation
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
Applications
MARKING DIAGRAM
1
A
R
adj
Y
WW
NSI90J
G
YWW
NSI
90JG
C
= Year
= Work Week
= Specific Device Code
= Pb−Free Package
ORDERING INFORMATION
Device
NSI45090JDT4G
NSV45090JDT4G
Package
DPAK
(Pb−Free)
DPAK
(Pb−Free)
Shipping
†
2500/Tape & Reel
2500/Tape & Reel
•
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
†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
1
April, 2014 − Rev. 3
Publication Order Number:
NSI45090JD/D
NSI45090JDT4G
MAXIMUM RATINGS
(T
A
= 25°C unless otherwise noted)
Rating
Anode−Cathode Voltage
Reverse Voltage
Operating and Storage Junction Temperature Range
ESD Rating:
Human Body Model
Machine Model
Symbol
Vak Max
V
R
T
J
, T
stg
ESD
Value
45
500
−55 to +175
Class 3A (4000 V)
Class B (200 V)
Unit
V
mV
°C
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.
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise noted)
Characteristic
Steady State Current @ Vak = 7.5 V (Note 1)
Voltage Overhead (Note 2)
Pulse Current @ Vak = 7.5 V (Note 3)
Capacitance @ Vak = 7.5 V (Note 4)
Capacitance @ Vak = 0 V (Note 4)
1.
2.
3.
4.
Symbol
I
reg(SS)
V
overhead
I
reg(P)
C
C
86.2
Min
76.5
Typ
90
1.8
103
17
70
119.6
Max
103.5
Unit
mA
V
mA
pF
pF
I
reg(SS)
steady state is the voltage (Vak) applied for a time duration
≥
80 sec, using FR−4 @ 300 mm
2
2 oz. Copper traces, in still air.
V
overhead
= V
in
− V
LEDs
. V
overhead
is typical value for 65% I
reg(SS)
.
I
reg(P)
non−repetitive pulse test. Pulse width t
≤
1 msec.
f = 1 MHz, 0.02 V RMS.
Figure 1. CCR Voltage−Current Characteristic
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2
NSI45090JDT4G
THERMAL CHARACTERISTICS
Characteristic
Total Device Dissipation (Note 5) T
A
= 25°C
Derate above 25°C
Thermal Resistance, Junction−to−Ambient (Note 5)
Thermal Reference, Junction−to−Lead 4 (Note 5)
Total Device Dissipation (Note 6) T
A
= 25°C
Derate above 25°C
Thermal Resistance, Junction−to−Ambient (Note 6)
Thermal Reference, Junction−to−Lead 4 (Note 6)
Total Device Dissipation (Note 7) T
A
= 25°C
Derate above 25°C
Thermal Resistance, Junction−to−Ambient (Note 7)
Thermal Reference, Junction−to−Lead 4 (Note 7)
Total Device Dissipation (Note 8) T
A
= 25°C
Derate above 25°C
Thermal Resistance, Junction−to−Ambient (Note 8)
Thermal Reference, Junction−to−Lead 4 (Note 8)
Total Device Dissipation (Note 9) T
A
= 25°C
Derate above 25°C
Thermal Resistance, Junction−to−Ambient (Note 9)
Thermal Reference, Junction−to−Lead 4 (Note 9)
Total Device Dissipation (Note 10) T
A
= 25°C
Derate above 25°C
Thermal Resistance, Junction−to−Ambient (Note 10)
Thermal Reference, Junction−to−Lead 4 (Note 10)
Junction and Storage Temperature Range
Symbol
P
D
R
θ
JA
R
ψ
JL4
P
D
R
θ
JA
R
ψ
JL4
P
D
R
θ
JA
R
ψ
JL4
P
D
R
θ
JA
R
ψ
JL4
P
D
R
θ
JA
R
ψ
JL4
P
D
R
θ
JA
R
ψ
JL4
T
J
, T
stg
Max
1771
14.16
70.6
6.8
2083
16.67
60
6.3
2080
16.64
60.1
6.5
2441
19.53
51.2
5.9
2309
18.47
54.1
6.2
2713
21.71
46.1
5.7
−55 to +175
Unit
mW
mW/°C
°C/W
°C/W
mW
mW/°C
°C/W
°C/W
mW
mW/°C
°C/W
°C/W
mW
mW/°C
°C/W
°C/W
mW
mW/°C
°C/W
°C/W
mW
mW/°C
°C/W
°C/W
°C
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.
5. FR−4 @ 300 mm
2
, 1 oz. copper traces, still air.
6. FR−4 @ 300 mm
2
, 2 oz. copper traces, still air.
7. FR−4 @ 500 mm
2
, 1 oz. copper traces, still air.
8. FR−4 @ 500 mm
2
, 2 oz. copper traces, still air.
9. FR−4 @ 700 mm
2
, 1 oz. copper traces, still air.
10. FR−4 @ 700 mm
2
, 2 oz. copper traces, still air.
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3
NSI45090JDT4G
TYPICAL PERFORMANCE CURVES
Minimum FR−4 @ 300 mm
2
, 2 oz Copper Trace, Still Air
I
reg(SS)
, STEADY STATE CURRENT (mA)
110
90
80
70
60
50
40
30
20
10
0
0
1
DC Test Steady State, Still Air, R
adj
= Open
3
4
5
6
7
8
2
Vak, ANODE−CATHODE VOLTAGE (V)
9
10
T
A
= 125°C
T
A
= 25°C
T
A
= 85°C
[
−0.144 mA/°C
typ @ Vak = 7.5 V
[
−0.155 mA/°C
typ @ Vak = 7.5 V
I
reg(P)
, PULSE CURRENT (mA)
100
T
A
= −40°C
[
−0.223 mA/°C
typ @ Vak = 7.5 V
110
105
T
A
= 25°C
R
adj
= Open
100
95
90
Non−Repetitive Pulse Test
85
3.0
4.0
5.0
6.0
7.0
8.0
9.0
Vak, ANODE−CATHODE VOLTAGE (V)
10
Figure 2. Steady State Current (I
reg(SS)
) vs.
Anode−Cathode Voltage (Vak)
I
reg(SS)
, STEADY STATE CURRENT (mA)
105
100
95
90
85
80
75
85
Vak @ 7.5 V
T
A
= 25°C
R
adj
= Open
I
reg
, CURRENT REGULATION (mA)
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
0
10
Figure 3. Pulse Current (I
reg(P)
) vs.
Anode−Cathode Voltage (Vak)
Vak @ 7.5 V
T
A
= 25°C
R
adj
= Open
90
100
105
110
I
reg(P)
, PULSE CURRENT (mA)
95
115
120
20
30
50
40
TIME (s)
60
70
80
90
Figure 4. Steady State Current vs. Pulse
Current Testing
I
reg(SS)
, STEADY STATE CURRENT (mA)
160
POWER DISSIPATION (mW)
150
140
130
120
110
100
90
80
1
10
100
1000
R
adj
(W), Max Power 125 mW
Vak @ 7.5 V
T
A
= 25°C
Figure 5. Current Regulation vs. Time
4800
700 mm
2
/2 oz
4500
4200
3900
500 mm
2
/2 oz
3600
3300
3000
300 mm
2
/2 oz
2700
2400
2100
2
1800 700 mm /1 oz
1500
500 mm
2
/1 oz
1200
900
300 mm
2
/1 oz
600
300
40
−40 −20
0
20
60
80 100 120 140
T
A
, AMBIENT TEMPERATURE (°C)
Figure 6. I
reg(SS)
vs. R
adj
Figure 7. Power Dissipation vs. Ambient
Temperature @ T
J
= 1755C
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NSI45090JDT4G
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 45 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.
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 8 and 9).
Figure 9.
Higher Current LED Strings
Two or more fixed current CCRs can be connected in
parallel. The current through them is additive (Figure 10).
Figure 8.
Figure 10.
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