A Constant Current Adjustable 0.7 A to 1.5 A, Up to 55 Vdc Single Stage Power Factor Corrected LED Power Supply

AND8427/D
A Constant Current
Adjustable 0.7 A to 1.5 A,
Up to 55 Vdc Single Stage
Power Factor Corrected
LED Power Supply
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APPLICATION NOTE
Prepared by: Frank Cathell
ON Semiconductor
Introduction
Platinum and Golden Dragon Plus. The use of these type of
LEDs reduces the number of LEDs required and eliminates
the need for a two stage power architecture where an offline
AC−DC conversion stage is followed by multiple strings of
DC−DC constant current stages.
While this supply has been designed to tightly regulate a
fixed current, the supply can also operate in a constant
voltage mode as the current and voltage are tightly regulated
based on the tightly regulated 2.5 V reference within of the
NCS1002. The maximum output voltage can be adjusted via
selection of a single resistor (R34 in Figure 2), however, it
is compliant enough to handle approximately a 1.5:1 range
depending on the summed LED forward voltage drop (Vf
max), and the output current. The default current has been
set at 1.5 A and can be adjusted in a range from 0.7 A − 1.5 A
(R32 in Figure 2) to support the specific application needs
of the end product.
This application note describes an up to 90 W, off−line,
isolated, single conversion stage power supply with active
power factor correction (PFC) intended for LED lighting. In
addition to LED drivers, the basic design concept could also
be applied to constant current applications such as high
power battery chargers. The power supply is designed
around ON Semiconductor’s NCL30001 single stage,
continuous conduction mode (CCM) PFC controller and the
NCS1002 secondary side, constant voltage, constant current
(CVCC) controller. The specific LED applications in the
40 W − 125 W range that can be addressed by the NCL30001
include end products such as street lights, refrigerator case
lightning, low bay lighting, down lights and wall packs. The
high current capability of this driver targets LEDs such as
the Cree XLamp™ XP−G, Seoul Semiconductor P7,
Bridgelux 800 and 1200 lumen LED Arrays, and OSRAM
Target Specifications:
Universal Input:
90 − 265 Vac / 47−63 Hz
Can support 277 Vac (305 Vac max) with minor component value/rating changes
Power Factor:
> 0.9 (50 − 100% of load)
Harmonic Content
EN61000−3−2 Class C Compliance
Efficiency
> 87% at 50−100% of 50 W, Iout = 1.5 A / Vf = 45 Vdc
Pout Maximum:
90 W
Vout max Range:
28 − 58 V (default − 52 V, resistor adjustable)
Constant Current Output
Iout Range:
0.7 − 1.5 A (default − 1.5 A, resistor adjustable)
CC Vout Compliance
50% to 100% of Vout max.
Current Ripple:
20% max p−p (dependent on Cout and Iout)
Current Tolerance
$3% or better
Cold Startup
< 500 msec typical to 50% of load
Protection:
Short Circuit Protection
Open Circuit Protection < 60 V peak (within UL Class 2)
Over Current Protection − Auto recovery
The NCL30001 has a robust suite of protection features. In addition optional protection for latched over temperature and over
voltage protection can be implemented.
© Semiconductor Components Industries, LLC, 2010
May, 2010 − Rev. 2
1
Publication Order Number:
AND8427/D
AND8427/D
Primary Side Circuitry
the exception of the VCC regulator circuit for the
NCL30001. Components Q3, Z3, and R4 form a simple
15 V regulator to prevent VCC overvoltage due to the wide
output compliance voltage that is reflected back to the
auxiliary VCC winding.
The primary circuitry is composed of the NCL30001
Continuous conduction mode flyback converter and
associated control logic, input EMI filter, and Vcc
“housekeeping” circuitry (see Figure 1). This circuitry is
identical to the primary circuitry shown of AND8397 with
L1A
MRA4007T
C3
0.1uF
600V
L1B
R7
D5
R2
560K
0.5W
R6
365K
R10
R11
365K
R9
30.1K
332K
R8
2K
1/2W
365K
5
MURS
160T
Z3
6
C6
C5
100uF MMSZ5245B 220uF
D7
1
50V
35v
MURS
R5
160T
220
11
C10
1nF
R13
+
C11
4.7uF
25V
C12
470pF
Z2
C13
33nF
D6
2.2K
0.5W
C8
0.1
Q1 SPP11N80C3
R23
4.7 ohm
12
11
10
9
R22
10K
D9
R16 TBD MMSD
4148
100K
C29
0.1
2.2K
R15
R14
10K
C9
R4
U1 13
6
7
8
20K
Q2
7.32K
R12
30.1K
R25
C14 R17
10nF 56K
Notes:
1. Crossed schematic lines are not connected.
2. Heavy lines indicate power traces/planes.
3. Z2/D9 is for optional OVP (not used).
4. L1A/B are Coilcraft PCV−0−224−03L or equivalent.
5. L2 is Coilcraft P3220−AL or equivalent.
6. Q1 and D8 will require small heatsinks.
T1
8
16
15
14 NC
R18
49.9K
C28
1uF
C7
100nF 2
400V
NCL30001
1
2
3
4
5
Q3
D10
C4
22uF
450V
R3
36K
3W
MMBTA06LT1G
SFH615A−4
U2
4
1
3
2
R21
C15 C16 C17 C18
0.1
0.1 10nF 1nF
R19
76.8K
Z1
MRA4007T
0.47
”X”
0.47
”X”
1M
0.5W
D1 − D4
1N5406 x 4
C2
1.5KE440A
L2
C1
R1
MMBTA06LT1G
AC
In
F1
2.5A
680pF
J1
10 ohm
R20
0.10
ohm
0.5W
C27
NCL30001 CVCC, 90 Watt Power Supply
Primary Control Side Schematic (Rev 2)
Figure 1. Primary Side Circuit Schematic
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2
AND8427/D
Secondary Side Control Circuitry
The schematic of Figure 2 shows the secondary side
circuitry responsible for the CVCC feedback control and
associated circuitry.
Xfmr
+
1000uF, 63V x 3
LED Anode
8
R24
C21 + C22
C24
+
C23
1nF
56, 1/2W
11
+ C20 +
C19
0.1
0.1
100V
D8
R26
MUR1640CTG
MJD243G
R28
U2
feedback
C25
R29
1
D11
−
7
Z4
MMSZ5245B
C30
1uF
C31
Is
+
Vs
R36
6
U3B
optocoupler
0.1
R31
2.7K
8
MMSD4148
C34
Is
1uF
20K
2
LED Cathode
−
4.7K, 0.5W
Vcc = 14V
2.2K
0.10
0.5W
R27
Q4
J2
100V
2.7K
1nF
5
NCS1002
C26
0.1
R30
D12
1
MMSD4148
R32
43K
13K
−
U3A
4
+
2
R33
6.2K
R34
82K
2.5V
C35
Vref
3
0.1
internal
To Primary
Ground Plane
C27
R35
3.9K
C32
to U3
10nF
GND
2.2nF
LED CVCC Driver Secondary Circuit (Rev1)
Figure 2. Secondary Side Control Schematic, Iout = 1.5 A (R32 = 43k)
CVCC Feedback and Control
Current control is achieved by sensing the output current
through R26 and presenting this sense signal to U3B where
it is compared to a scaled down value of the 2.5 V internal
reference. Because the right hand side of current sense
resistor R26 is connected to the secondary logic ground (or
common), the sense node on the left hand side of the resistor
will go negative with increasing current. The current sense
divider network of R31 and R32 is biased up on the low side
of R32 by the 2.5 V reference such that when pin 5 of U3B
drops to zero, this amplifier becomes dominant and controls
the loop (note that the inverting input is grounded via R36.)
So the output over−current threshold level is set by adjusting
R31 and R32 such that the voltage level presented at pin 5
of U1 at no output load is exactly the voltage drop that will
appear across R26 at maximum desired current. In this
design example the maximum current is set at 1.5 A, so there
must be 150 mV of bias at pin 5 under no output load.
Frequency compensation (bandwidth) of the current
amplifier is set by R29 and C25.
Voltage and current regulation are achieved by utilizing
ON Semiconductor’s NCS1002 secondary side CVCC
controller. This chip contains two precision op−amps and an
internal 2.5 V reference and is housed in a compact 8 pin
SOIC package. The reference is internally connected to the
non−inverting input of one of the op amps. Referring to the
schematic of Figure 2, this latter op−amp is used for voltage
control (U3A). The power supply output is sensed through
resistor divider R34 and R35 and presented to the inverting
input of this op−amp section. The resistors are selected so as
to provide 2.5 V to pin 3 when the output is at the desired
maximum voltage (around 55 V in this case). Frequency
compensation is provided by R/C network R30 and C26.
Since both amplifier outputs are “OR ed” via diodes D11
and D12 to drive the optocoupler U2, the amplifier with the
lowest output is dominant; hence CVCC control and mode
transitions between CV and CC are smooth with no
interaction between the op−amps.
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AND8427/D
Secondary VCC Regulator
The efficiency was impacted most by the nature of the
output rectifier D8. In this case an ultra−fast device showed
improved efficiency over the soft−recovery, ultra−fast part
due to the lower Vf of the diode. For 120 Vac input only
applications, further efficiency improvement can be
achieved by the use of a 200 V Schottky diode and
optimization of snubber network R24 and C19.
Since the VCC to run the secondary side circuitry is
derived from the main output capacitors, this voltage can
vary due to series LED diode Vf compliance, and with the
nominal adjusted level of the output voltage. In order to keep
the VCC voltage for U3 and the associated circuitry stable,
a simple linear regulator composed of Q4, Z4, and R27. This
prevents the secondary VCC from exceeding approximately
15 V. This is well below the maximum 32 V capability of the
NCS1002.
Power Factor
The power factor was highest with 120 Vac input nominal
and was 0.98 or higher for any of the 4 current level outputs.
At 230 Vac input, the power factor was minimum at 0.93 for
the 0.7 A output current level. Plots of the line current
envelope with a 1 A Constant Current load are shown in
Figures 3 and 4.
Test Results and Plots
Efficiency: Efficiencies were measured with a normalized
output voltage of 45 V using an electronic LED load
simulator.
Iout (CC)
120 Vac input
230 Vac input
1.50 A
87%
87.5%
1.25 A
87%
87.5%
1.00 A
86%
86.5%
0.70 A
85.5%
86.0%
Figure 3. Line Current Envelope; 120 Vac input, 1
A output (PF = 0.98)
Figure 4. Line Current Envelope; 230 Vac input, 1
A output (PF = 0.97)
Output Current Ripple
and 700 mA output, respectively. The ripple amplitude is
directly proportional to dc output current and the output
capacitance.
The 120 Hz output current ripple was highest at 250 mA
peak−to−peak (17%) with max rated load (1.5 A). The ripple
profiles are shown in Figures 5 and 6 below for 1.5 A output
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4
AND8427/D
Figure 5. Output Current Ripple at 1.5 A CC Load
Figure 6. Output Current Ripple at 700 mA CC
Load
Output Turn−on Profiles
control loop is not damped sufficiently. Figures 7 and 8
show the output current turn−on profiles for 1.5 A and
700 mA CC loads, respectively. Scale is 500 mA per
division vertical.
Power factor corrector circuits necessarily require low
bandwidth feedback loops in order to facilitate high power
factor. As such, turn−on overshoot can be problematic if the
Figure 8. Turn−on Profile; 700 mA Load
Figure 7. Turn−on Profile; 1.5 A Load
Current Regulation with Vout Compliance Voltage
forward voltage drop can vary depending on number of
LEDs in series, LED binning, LED color (die type), nominal
operating dc current level, and ambient temperature. As can
be seen in the plot, the current regulation is very tight.
Figure 9 shows the output current regulation with respect
to the output voltage compliance range which simulates
different total Vf levels for series strings of LEDs. This total
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5
AND8427/D
1.1
Output Current (A)
1.0
0.9
0.8
0.7
0.6
R32 = 68k
0.5
30
33
36
39
42
45
48
51
54
57
60
LED Forward Voltage (Vdc)
Figure 9. Current Regulation versus Vf Output Compliance Voltage
Final Comments
components have been sized for 305 Vac operation. The
only components that would need to be changed to support
277 Vac (305 Vac max) are the “X” capacitors C1 and C2 in
the primary circuitry and secondary side output rectifier D8
changed to a higher PRV rated device such as the
MUR1660CTG or the MURH860CTG.
This compact single stage power factor corrected constant
current LED driver is ideal for general and architectural
lighting. With minor changes to resistors (R32 and R34) in
the secondary control circuit, the regulated current and
voltage can be adjusted to meet the specific applications
requirements of the end product. The transformer and power
dBuV
NCL30001 120 Vac
50 Watt LED Load
100
90
80
EN 55022; Class A Conducted, Quasi−Peak
70
EN 55022; Class A Conducted, Average
60
50
40
30
20
10
Average
0
1
10
5/18/2010 9:53:09 AM
(Start = 0.15, Stop = 30.00) MHz
Figure 10. Conducted EMI Plot (average) – 50 Watt Load
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AND8427/D
BILL OF MATERIALS
Designator
Qty
Description
D5, D10
2
D1, D2, D3,
D4
Value
Tolerance
Footprint
Manufacturer
Manufacturer Part Number
Diode
SMA
ON Semiconductor
MRA4007T
4
Diode
axial lead
ON Semiconductor
1N5406
D6, D7
2
Ultrafast diode
SMB
ON Semiconductor
MURS160
D9, 11, 12, 13
4
Signal diode
SOD123
ON Semiconductor
MMSD4148A
D8
1
UFR diode
TO−220AB
CT
ON Semiconductor
MURH860CTG
Z1
1
TVS
Z3, 4, 5
3
Zener diode
15 V
5%
SOD123
ON Semiconductor
MMSZ5245B
Z2
−
Zener diode
Not Used
5%
SOD123
ON Semiconductor
−
Q5
1
MOSFET
40 V, 100 mA
SOT23
ON Semiconductor
2N7002KT1G
Q7
1
MOSFET
100 V, A
DPak4
ON Semiconductor
NTD12N10T4G
Q1
1
MOSFET
11 A, 800 V
TO−220
Infineon
SPP11N80C3
Q2, Q3, Q6
3
BJT
60 V, 500 mA
SOT23
ON Semiconductor
MMBTA06LT1G
Q4
1
BJT
100 V, 4 A
DPak4
ON Semiconductor
MJD243G
U1
1
PFC controller
SOIC16
ON Semiconductor
NCL30001
U2
1
Optocoupler
4 pin SMD
Vishay
H11A817 or SFH6156A−4
U3
1
Dual amp +
zener
SOIC−8
ON Semiconductor
NCS1002
C1, C2
2
X caps
0.47 mF, 277 V
10%
LS=15mm
Evox Rifa/Kemet or
EPCOS
PHE840MB6470MB16R17 or
B32922C3474M
C27
1
Y2 cap
2.2 nF, 1 kV
10%
LS=10mm
Evox Rifa/Kemet
PME271Y422M or
P271HE222M250A
C3
1
Polyprop. Film
0.22mF (630V)
10%
LS=24mm
Vishay
2222 383 20224
C7
1
Disc cap
68 to 100 nF,
400V
10%
LS=10mm
TDK
FK22X7R2J104K
C8, 15, 16, 25,
C26, C29, C33
7
ceramic cap
0.1 mF, 50 V
10%
1206
TDK
C3216X7R2A104K
C23, C24
2
ceramic cap
0.1 mF, 100 V
10%
1206/1210
TDK
C3216X7R2A104K
C28, C30
2
ceramic cap
1.0 mF, 25 V
10%
1206
TDK
C3216X7R1H105K
C19
1
ceramic disc
cap
1 nF, 1 kV
10%
LS = 8 mm
TDK
CK45−B3AD102KYNN
C12
1
ceramic cap
470 pF, 50 V
10%
1206
Vishay
VJ1206A471JXACW1BC
Input transient
option
axial lead
1.5KE440A
C9
1
ceramic cap
680 pF, 50 V
10%
1206
Kemet
C1206C681K5GACTU
C10, C18, C31
3
ceramic cap
1 nF, 100 V
10%
1206
Kemet
C1206C102K1RACTU
C14, C17, C32
3
ceramic cap
10 nF, 50 V
10%
1206
TDK
C3216COG2A103J
C13
1
ceramic cap
33 nF, 50 V
10%
1206
TDK
C3216COG1H333J
C5
1
electrolytic cap
100 mF, 35 V
10%
LS=2.5mm
UCC
ESMG350ELL101MF11D
C11
1
electrolytic cap
4.7 mF, 25 V
10%
LS=2.5mm
UCC
ESMG250ELL4R7ME11D
C6
1
electrolytic cap
220 mF, 50 V
10%
LS = 5mm
UCC
ESMG500ELL221MJC5S
C20, 21, 22
3
electrolytic cap
1000 mF, 63 V
10%
LS = 8 mm
Nichicon
647−UVR1J102MHD
C4
1
electrolytic cap
22 mF, 450 V
10%
LS = 5 mm
Nichicon
647−UVY2W220MHD
C34,C35
2
ceramic cap
0.1 mF, 50 V
0.1
1206
TDK
C3216X7R2A104K
R4
1
0.5W resistor
2.2K
10%
axial lead
Vishay
NFR25H0002201JR500
R1
1
0.5W resistor
1M, 0.5W
10%
axial lead
Vishay
CMF601M0000FHEK
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7
AND8427/D
Designator
Qty
Description
Value
Tolerance
Footprint
Manufacturer
Manufacturer Part Number
R8
1
0.5W resistor
2K, 0.5W
10%
axial lead
Vishay
CMF552K0000FHEB
R2
1
0.5W resistor
560K
10%
axial lead
Vishay
HVR3700005603JR500
R27
1
0.5W resistor
4.7K − 5.0K
5%
1210
Vishay
CRCW12104K70JNEA
R24
1
0.5W resistor
100 ohms
10%
axial lead
Vishay
CMF50100R00FHEB
R20, R26
2
0.5W resistor
0.1 ohms
5%
LS = 18
mm
Ohmite
WNCR10FET
R3
1
3 or 5W resistor
36K to 39K
10%
LS = 30
mm
Ohmite
PR03000203602JAC00
R23
1
0.25W resistor
4.7 ohms
5%
1206
Vishay/Dale
CRCW12064R75F
R5
1
0.25W resistor
220 ohms
5%
1206
Vishay/Dale
CRCW1206220RF
R38
1
0.25W resistor
100 ohms
5%
1206
Vishay/Dale
CRCW1206100RF
R21, 41, 42,
43
4
0.25W resistor
10 ohms
5%
1206
Vishay/Dale
CRCW120610R0F
R15, R28
2
0.25W resistor
2.2K
5%
1206
Vishay/Dale
CRCW12062211F
R31, R36
2
0.25W resistor
2.7K
5%
1206
Vishay/Dale
CRCW12062741F
R29,R30
2
0.25W resistor
43.2K
0.01
1206
Vishay/Dale
R25
1
0.25W resistor
20K
1%
1206
Vishay/Dale
CRCW12062002F
R32
1
0.25W resistor
68K
1%
1206
Vishay/Dale
CRCW12066812F
R33
1
0.25W resistor
6.2K
1%
1206
Vishay/Dale
CRCW12066191F
R37
1
0.25W resistor
5.1K
1%
1206
Vishay/Dale
CRCW12065111F
R34
1
0.25W resistor
82K
1%
1206
Vishay/Dale
CRCW12068252F
R35
1
0.25W resistor
3.9K
1%
1206
Vishay/Dale
CRCW12063921F
R14, 22, 39,
40
4
0.25W resistor
10K
1%
1206
Vishay/Dale
CRCW12061002F
R13
1
0.25W resistor
7.32K
1%
1206
Vishay/Dale
CRCW12064322F
R9, R12
2
0.25W resistor
30.1K
1%
1206
Vishay/Dale
CRCW12063012F
R17
1
0.25W resistor
56K
1%
1206
Vishay/Dale
CRCW12065622F
R18
1
0.25W resistor
49.9K
1%
1206
Vishay/Dale
CRCW12064992F
R19
1
0.25W resistor
76.8K
1%
1206
Vishay/Dale
CRCW12067682F
R16
1
0.25W resistor
100K
1%
1206
Vishay/Dale
CRCW12061003F
R10
1
0.25W resistor
332K
1%
1206
Vishay/Dale
CRCW12063323F
R6, 7, 11
3
0.25W resistor
365K
1%
F1
1
Fuse
2.5A, 250Vac
L1A/B
2
L2
1206
Vishay/Dale
CRCW12063653F
TR−5
Littlefuse
37212500411
EMI inductor
Slug core
Coilcraft
PCV−0224−03L
1
EMI inductor
Toroid
Coilcraft
P3220−AL
T1
1
Flyback xfmr
custom
WE−Midcom (Wurth
Electronics)
750311267, Rev 01
J1, J2, J3
3
I/O connectors
LS = 5 mm
Weidmuller
1716020000
(for Q1, D8)
2
Heatsink Q1,
D8
LS = 25.4
mm
Aavid
531102B02500G (or similar)
HD1
1
Header
CONN
HEADER
2POS
0.100”
Molex
90120−0122
JMP1
1
Shorting Jumper
0.1” Two
Position
Shorting
Jumper
0.100”
Sullins Connector
Solutions
SPC02SYAN
55V, 90W
CCM
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8
AND8427/D
Designator
Qty
Description
Value
Tolerance
Footprint
Manufacturer
Manufacturer Part Number
SOD123
ON Semiconductor
MMSD4148A
Optional DIM Daughter Card BOM
D1, D2, D3
3
Signal diode
Q1
1
BJT
400mA, 40V
SOT23
ON Semiconductor
MMBT2222A
Q2
1
Mosfet
40V, 100 mA
SOT23
ON Semiconductor
2N7002KT1G
U1
1
Timer IC
_
SOIC8
ON Semiconductor
MC1455D
U2
1
Quad Opamp
_
SOIC14
ON Semiconductor
LM324DG
C4
1
ceramic cap
1.0 mF, 25V
10%
1206
TDK
C3216X7R1H105K
C1
1
ceramic cap
68 nF, 50V
10%
1206
Vishay
VJ1206Y683KXAA
C2, 3, 7, 9
4
ceramic cap
0.1 mF, 50V
10%
1206
TDK
C3216X7R2A104K
C6, C8
2
ceramic cap
10 nF, 50V
10%
1206
TDK
C3216COG2A103J
C5
1
ceramic cap
1 nF, 100V
10%
1206
Kemet
C1206C102K1RACTU
R1
1
potentiometer
20K, 15 Turn
Thru hole
Vishay
T18203KT10
R9
1
potentiometer
100K, 15 turn
Thru hole
Vishay
T18104KT10
R4, 11, 13, 16
4
0.25W resistor
10K
5%
1206
Vishay/Dale
CRCW12061002F
R2
1
0.25W resistor
150K
1%
1206
Vishay/Dale
CRCW12061503F
R3
1
0.25W resistor
20K
1%
1206
Vishay/Dale
CRCW12062002F
R5
1
0.25W resistor
4.3K
1%
1206
Vishay/Dale
CRCW12064321F
R6
1
0.25W resistor
5K
1%
1206
Vishay/Dale
CRCW12064991F
R7
1
0.25W resistor
1.0K
1%
1206
Vishay/Dale
CRCW12061001F
R8
1
0.25W resistor
15K
1%
1206
Vishay/Dale
CRCW12061502F
R10
1
0.25W resistor
11K
1%
1206
Vishay/Dale
CRCW12061102F
R12
1
0.25W resistor
30K
1%
1206
Vishay/Dale
CRCW12063012F
R15
1
0.25W resistor
10 ohms
1%
1206
Vishay/Dale
CRCW120610R0F
1%
1206
Vishay/Dale
CRCW12060000Z
Molex or Tyco
Rt angle 6 pin connector, 0.1”
pitch
R14
1
0.25W resistor
Zero ohms
TH1
1
PTC Thermistor
Not Used
Thru hole
CON 1
1
right angle pins
0.1” 6 position
Thru hole
http://onsemi.com
9
AND8427/D
REFERENCES
ON Semiconductor Application Note AND8397
ON Semiconductor Data Sheet for NCL30001
ON Semiconductor Data Sheet for NCS1002
XLamp is a trademark of Cree, Inc.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
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Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
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10
ON Semiconductor Website: www.onsemi.com
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For additional information, please contact your local
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AND8427/D
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