NCR321U [NEXPERIA]
250 mA LED driver in SOT457Production;
| 型号： | NCR321U |
| 厂家： | 
Nexperia |
| 描述： | 250 mA LED driver in SOT457Production |
| 文件： | 总17页 (文件大小：415K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCR320U / NCR321U
250 mA LED driver in SOT457
Rev. 1 — 11 December 2018
Product data sheet
1. Product profile
1.1. General description
LED driver consisting of a resistor-equipped NPN transistor with two diodes on one chip in an
SOT457 (SC-74; TSOP6) plastic package.
Table 1. Product overview
Type number
Package
Nexperia
SOT457
SOT457
JEITA
NCR320U
NCR321U
SC-74; TSOP6
SC-74; TSOP6
1.2. Features and benefits
•
•
•
•
•
•
•
•
•
Stabilized output current of 10 mA without external resistor
Stabilized output current adjustable up to 250 mA when an external resistor is used
High current accuracy at supply voltage variation
Low voltage overhead of 1.4 V
Reduces component count and board space
High power dissipation of 750 mW
Supply voltage up to 16 V
Digital PWM input up to 10 kHz frequency for NCR321U
AEC-Q101 qualified
1.3. Applications
•
•
•
Constant current LED driver
Generic constant current source
Automotive applications (for example: interior lighting, dash board, instrumentation, number
plate light)
•
Increase stabilized output current by paralleling drivers
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
1.4. Quick reference data
Table 2. Quick reference data
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VEN
enable voltage
NCR320U
-
-
-
-
-
-
25
4.5
16
V
V
V
NCR321U
Vout
Iout
output voltage
stabilized output current
NCR320U
Vout= 1.4 V;
VEN= 12 V
[1] 9
[1] 9
10
10
11
11
mA
mA
NCR321U
Vout= 1.4 V;
VEN= 3.3 V
[1] Pulse test: tp ≤ 300 µs; δ ≤ 0.02
2. Pinning information
Table 3. Pinning
Pin
1
Symbol
VEN
Description
enable voltage
output current
output current
ground
Simplified outline
Symbol
6
5
4
REXT
IOUT GND
2
IOUT
IOUT
GND
3
1
2
3
4
SC-74; TSOP6
(SOT457)
5
IOUT
REXT
output current
external resistor
VEN
IOUT IOUT
6
aaa-029361
3. Ordering information
Table 4. Ordering information
Type number Package
Name
Description
Version
SOT457
SOT457
NCR320U
NCR321U
SC-74; TSOP6
SC-74; TSOP6
plastic surface-mounted package; 6 leads
plastic surface-mounted package; 6 leads
4. Marking
Table 5. Marking codes
Type number
Marking code
NCR320U
NCR321U
L4
L5
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
2 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
5. Limiting values
Table 6. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
Iout
stabilized output current if
external resistor is used
-
300
mA
VEN
enable voltage
NCR320U
-
-
-
25
V
NCR321U
4.5
V
Vout
VR
output voltage
reverse voltage
total power dissipation
16
V
[1] -
0.5
V
Ptot
Tamb ≤ 25 °C
[2] -
[3] -
[4] -
[5] -
-
475
650
750
1100
150
150
150
mW
mW
mW
mW
°C
°C
°C
Tj
junction temperature
ambient temperature
storage temperature
Tamb
Tstg
-55
-65
[1] Between all terminals.
[2] Device mounted on an FR4 Printed-Circuit Board (PCB), single-side copper (35 µm), tin-plated and
standard footprint.
[3] Device mounted on an FR4 Printed-Circuit Board (PCB), single-side copper (35 µm), tin-plated; mounting
pad for collector 1 cm2.
[4] Device mounted on an FR4 Printed-Circuit Board (PCB), 4-layer copper, tin-plated and standard footprint.
[5] Device mounted on an FR4 Printed-Circuit Board (PCB), 4-layer copper, tin-plated; mounting pad for
collector 1 cm2.
aaa-029389
1.2
(1)
P
tot
(W)
0.9
(2)
(3)
0.6
0.3
0
(4)
-75
-25
25
75
125
175
(°C)
T
amb
(1) FR4 PCB, 4-layer copper, 1 cm2
(2) FR4 PCB, 4-layer copper, standard footprint
(3) FR4 PCB, single sided copper (35 µm), 1 cm2
(4) FR4 PCB, single-sided copper (35 µm), standard footprint
Fig. 1. Power derating curve
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
3 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
6. Thermal characteristics
Table 7. Thermal characteristics
Symbol Parameter
Conditions
Min
[1] -
Typ
Max
265
190
165
115
50
Unit
K/W
K/W
K/W
K/W
K/W
Rth(j-a)
thermal resistance from
in free air
-
-
-
-
-
junction to ambient
[2] -
[3] -
[4] -
-
Rth(j-sp)
thermal resistance from
junction to solder point
[1] Device mounted on an FR4 PCB, single-sided copper (35 µm), tin-plated and standard footprint.
[2] Device mounted on an FR4 PCB, single-sided copper (35 µm), tin-plated; mounting pad
for collector 1 cm2.
[3] Device mounted on an FR4 PCB, 4-layer copper, tin-plated and standard footprint.
[4] Device mounted on an FR4 PCB, 4-layer copper, tin-plated; mounting pad for collector 1 cm2.
aaa-010054
3
10
Z
th(j-a)
(K/W)
duty cycle = 1
0.75
0.5
2
10
0.33
0.2
0.1
0.05
10
0.02
0.01
0
1
10
-5
-4
-3
-2
-1
2
3
10
10
10
10
1
10
10
10
t
p
(s)
FR4 PCB; single-sided copper; tin-plated and standard footprint
Fig. 2. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values
aaa-010055
3
10
Z
th(j-a)
(K/W)
duty cycle = 1
0.75
0.5
2
10
0.33
0.2
0.1
10
0.05
0.02
0.01
0
1
10
-5
-4
-3
-2
-1
2
3
10
10
10
10
1
10
10
10
t
p
(s)
FR4 PCB; 4-layer copper; tin-plated and standard footprint
Fig. 3. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
4 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
7. Characteristics
Table 8. Characteristics
Tamb = 25 °C unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V(BR)CEO
collector-emitter
IC = 1 mA; IB = 0 A
16
-
-
V
breakdown voltage
hFE
DC current gain
internal resistor
VCE =1 V; IC = 50 mA
IRint = 10 mA
[1] 200
85
350
95
-
Rint
105
1.05
Ω
V
VRint
voltage drop at internal
resistor Rint
Iout = 10 mA
[1] 0.85
0.95
IEN
RB
Iout
Iout
enable current
NCR320U
VEN = 12 V
VEN =3.3 V
[1] -
[1] -
1.2
1.2
-
-
mA
mA
NCR321U
bias resistor
NCR320U
-
-
10
-
-
kΩ
kΩ
NCR321U
1.5
stabilized output current
NCR320U
VEN = 12 V; Vout = 1.4 V
VEN = 3.3 V; Vout = 1.4 V
[1] 9
[1] 9
10
10
11
11
mA
mA
NCR321U
stabilized output current
NCR320U at Rext = 3 Ω VEN = 12 V; Vout > 1.4 V
NCR321U at Rext = 3 Ω VEN = 3.3 V; Vout > 1.4 V
[1] -
[1] -
-
250
250
1.4
-
-
-
mA
mA
V
Vout, min
lowest sufficient output
voltage overhead:
Vout = VCC - VLED
Iout> 10 mA
ΔIout/(Iout x ΔTamb
)
stabilized output current change over ambient temperature
NCR320U
NCR321U
VEN = 12 V; Vout > 2 V
VEN = 3.3 V; Vout > 2 V
[1] -
[1] -
-0.27
-0.27
-
-
%/K
%/K
ΔIout/(Iout x ΔVCC
)
stabilized output current change over supply voltage
NCR320U
NCR321U
VEN = 12 V; Vout > 2 V
VEN = 3.3 V; Vout > 2 V
[1] -
[1] -
1
1
-
-
%/V
%/V
[1] Pulse test: tp ≤ 300 μs; δ ≤ 0.02.
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
5 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
aaa-029390
aaa-029444
0.3
0.4
I
out
(A)
I
out
(A)
(2)
(1)
(2)
0.3
(1)
0.2
0.2
0.1
0
(3)
0.1
(4)
(5)
(6)
0
2
0
4
8
12
1
10
10
V
(V)
R
ext
out
VEN = 12 V; Tamb = 25 °C
(1) Rext = 3 Ω
VEN = 12 V; Tamb = 25 °C
(1) Vout = 1.4 V
(2) Rext = 4 Ω
(2) Vout = 5.4 V
(3) Rext = 6 Ω
Fig. 5. NCR320U: Output current as a function of
external resistor; typical values
(4) Rext = 10 Ω
(5) Rext = 20 Ω
(6) Rext = open
Fig. 4. NCR320U: Output current as a function of
output voltage; typical values
aaa-029392
aaa-029393
0.015
0.07
I
out
(A)
0.06
I
out
(3)
(2)
(1)
(A)
(3)
0.05
0.04
0.03
0.02
0.01
0
0.010
0.005
0
(2)
(1)
0
4
8
12
0
4
8
12
V
(V)
V
(V)
out
out
VEN = 12 V; Rext = open
(1) Tamb = 85 °C
VEN = 12 V; Rext = 20 Ω
(1) Tamb = 85 °C
(2) Tamb = 25 °C
(2) Tamb = 25 °C
(3) Tamb = -40 °C
(3) Tamb = -40 °C
Fig. 6. NCR320U: Output current as a function of
output voltage; typical values
Fig. 7. NCR320U: Output current as a function of
output voltage; typical values
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
6 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
aaa-029394
aaa-029395
0.3
0.015
I
I
(3)
(2)
out
out
(A)
(A)
(3)
(1)
0.2
0.010
(2)
(1)
0.1
0.005
0
0
0
4
8
12
0
5
10
15
20
V
25
V
(V)
(V)
EN
out
VEN = 12 V; Rext = 3 Ω
(1) Tamb = 85 °C
Vout = 2 V; Rext = open
(1) Tamb = 85 °C
(2) Tamb = 25 °C
(2) Tamb = 25 °C
(3) Tamb = -40 °C
(3) Tamb = -40 °C
Fig. 8. NCR320U: Output current as a function of
output voltage; typical values
Fig. 9. NCR320U: Output current as a function of
enable voltage; typical values
aaa-029396
aaa-029397
0.07
0.3
I
out
(A)
0.06
(3)
(3)
(2)
(1)
I
(2)
(1)
out
(A)
0.05
0.04
0.03
0.02
0.01
0
0.2
0.1
0
0
5
10
15
20
V
25
0
5
10
15
20
V
25
(V)
(V)
EN
EN
Vout = 2 V; Rext = 20 Ω
(1) Tamb = 85 °C
Vout = 2 V; Rext = 3 Ω
(1) Tamb = 85 °C
(2) Tamb = 25 °C
(3) Tamb = -40 °C
(2) Tamb = 25 °C
(3) Tamb = -40 °C
Fig. 10. NCR320U: Output current as a function of
enable voltage; typical values
Fig. 11. NCR320U: Output current as a function of
enable voltage; typical values
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
7 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
aaa-029398
aaa-029399
0.3
3
2
1
0
(1)
(2)
I
I
out
(A)
EN
(mA)
(1)
(2)
0.2
(3)
(3)
0.1
(4)
(5)
(6)
0
0
5
10
15
20
V
25
0
5
10
15
20
V
25
(V)
(V)
EN
EN
Vout = 2 V; Tamb = 25 °C
(1) Rext = 3 Ω
Iout = 0 A; Rext = open
(1) Tamb = 85 °C
(2) Tamb = 25 °C
(3) Tamb = -40 °C
(2) Rext = 4 Ω
(3) Rext = 6 Ω
(4) Rext = 10 Ω
(5) Rext = 20 Ω
(6) Rext = open
Fig. 13. NCR320U: Enable current as a function of
enable voltage; typical values
Fig. 12. NCR320U: Output current as a function of
enable voltage; typical values
aaa-029400
aaa-029445
0.3
0.4
I
out
(A)
I
out
(A)
(2)
(1)
(2)
0.3
(1)
0.2
0.2
0.1
0
(3)
0.1
(4)
(5)
(6)
0
2
0
4
8
12
1
10
10
V
(V)
R
ext
out
VEN = 3.3 V; Tamb = 25 °C
(1) Rext = 3 Ω
VEN = 3.3 V; Tamb = 25 °C
(1) Vout = 1.4 V
(2) Rext = 4 Ω
(2) Vout = 5.4 V
(3) Rext = 6 Ω
Fig. 15. NCR321U: Output current as a function of
external resistor; typical values
(4) Rext = 10 Ω
(5) Rext = 20 Ω
(6) Rext = open
Fig. 14. NCR321U: Output current as a function of
output voltage; typical values
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
8 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
aaa-029402
aaa-029403
0.015
0.07
out
I
(A)
0.06
I
out
(3)
(2)
(1)
(A)
(3)
(2)
0.05
0.04
0.03
0.02
0.01
0
0.010
(1)
0.005
0
0
4
8
12
0
4
8
12
V
(V)
V
(V)
out
out
VEN = 3.3 V; Rext = open
(1) Rext = 85 °C
VEN = 3.3 V; Rext = 20 Ω
(1) Rext = 85 °C
(2) Rext = 25 °C
(2) Rext = 25 °C
(3) Rext = -40 °C
(3) Rext = -40 °C
Fig. 16. NCR321U: Output current as a function of
output voltage; typical values
Fig. 17. NCR321U: Output current as a function of
output voltage; typical values
aaa-029404
aaa-029405
0.3
0.015
(3)
I
I
out
(A)
out
(A)
(2)
(1)
(3)
(2)
0.2
0.010
(1)
0.1
0.005
0
0
0
4
8
12
0
1
2
3
4
5
V
(V)
V
(V)
EN
out
VEN = 3.3 V; Rext = 3 Ω
(1) Rext = 85 °C
Vout = 2 V; Rext = open
(1) Rext = 85 °C
(2) Rext = 25 °C
(2) Rext = 25 °C
(3) Rext = -40 °C
(3) Rext = -40 °C
Fig. 18. NCR321U: Output current as a function of
output voltage; typical values
Fig. 19. NCR321U: Output current as a function of
enable voltage; typical values
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
9 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
aaa-029406
aaa-029407
0.07
0.3
I
out
(A)
0.06
(3)
(1)
I
(3)
(2)
(1)
out
(A)
0.05
0.04
0.03
0.02
0.01
0
0.2
0.1
0
0
1
2
3
4
5
0
1
2
3
4
5
V
(V)
V
(V)
EN
EN
Vout = 2 V; Rext = 20 Ω
(1) Rext = 85 °C
Vout = 2 V; Rext = 3 Ω
(1) Rext = 85 °C
(2) Rext = 25 °C
(2) Rext = 25 °C
(3) Rext = -40 °C
(3) Rext = -40 °C
Fig. 20. NCR321U: Output current as a function of
enable voltage; typical values
Fig. 21. NCR321U: Output current as a function of
enable voltage; typical values
aaa-029408
aaa-029409
0.3
4
I
EN
(mA)
I
out
(A)
(1)
(1)
(2)
3
2
1
0
(2)
(3)
0.2
(3)
0.1
(4)
(5)
(6)
0
0
2
4
6
0
2
4
6
V
(V)
V
(V)
EN
EN
Vout = 2 V; Tamb = 25 °C
(1) Rext = 3 Ω
Iout = 0 A; Rext = open
(1) Tamb = 85 °C
(2) Tamb = 25 °C
(3) Tamb = -40 °C
(2) Rext = 4 Ω
(3) Rext = 6 Ω
(4) Rext = 10 Ω
(5) Rext = 20 Ω
(6) Rext = open
Fig. 23. NCR321U: Enable current as a function of
enable voltage; typical values
Fig. 22. NCR321U: Output current as a function of
enable voltage; typical values
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
10 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
8. Application information
Figure 24 shows a typical application circuit for an LED driver. The constant current ensures a
constant brightness in all LEDs. The output current can be adjusted between 10 mA and 250 mA
by connecting resistor Rext. Figures 5 and 15 give a first indication for choosing the external resitor
Rext. The minimum input voltage is given by voltage drop at the LED's VLED and the maximum is
governed by the maximum power dissipation
VLED + Vout, min < VCC < Ptot /Iout + VLED
V
CC
I
I
out
EN
VEN
IOUT
REXT
R
ext
GND
aaa-029337
Fig. 24. LED driver application diagram
NCR321U can be used for PWM dimming or on/off function by driving the VEN pin. The enable
voltage depends on the drive current, see Figure 21. Figure 25 shows a typical application
where VEN is driven via a micro directly. To controll more than one NCR321U devices by one
microcontroller output, a shift register (for example 74AHC(T)594PW) can be used.
V
CC
µC /
Logic
I
I
out
EN
VEN
IOUT
REXT
GND
R
ext
aaa-029336
Fig. 25. Application diagram: PWM dimming function
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
11 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
To savely drive currents that are above the limits of the NCR32xU, two or more devices can be
parallel connected as illustrated in Figure 26. When choosing the same values for the external
resistors, the drive current splits equally and the capability of handling excess power is doubled.
Both, NCR320U and NCR321U can be used in this configuration.
V
CC
I
I
I
I
out
EN
out
EN
VEN
IOUT
VEN
IOUT
REXT
REXT
R
ext
R
ext
GND
GND
aaa-029364
Fig. 26. Application diagram: Parallelization
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
12 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
9. Package outline
Table 9. Package outline
Plastic surface-mounted package (TSOP6); 6 leads
SOT457
D
B
E
A
X
y
H
v
M
A
E
6
5
4
Q
pin 1
index
A
A
1
c
1
2
3
L
p
e
b
p
w
M B
detail X
0
1
2 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
A
1
b
c
D
e
H
L
Q
v
w
y
E
p
p
E
0.1
0.013
0.40
0.25
1.1
0.9
0.26
0.10
3.1
2.7
1.7
1.3
3.0
2.5
0.6
0.2
0.33
0.23
mm
0.95
0.2
0.2
0.1
REFERENCES
JEDEC JEITA
EUROPEAN
PROJECTION
OUTLINE
VERSION
ISSUE DATE
IEC
05-11-07
06-03-16
SOT457
SC-74
Fig. 27. Package outline SC-74; TSOP6 (SOT457)
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
13 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
10. Soldering
Table 10. Soldering
3.45
1.95
0.55
(6×)
solder lands
solder resist
0.45
(6×)
0.95
0.95
3.3 2.825
solder paste
occupied area
0.7
Dimensions in mm
(6×)
0.8
(6×)
2.4
sot457_fr
Fig. 28. Reflow soldering footprint for SC-74; TSOP6 (SOT457)
5.3
1.5
(4×)
solder lands
1.475
5.05
solder resist
occupied area
0.45
(2×)
1.475
Dimensions in mm
preferred transport
direction during soldering
1.45
(6×)
2.85
sot457_fw
Fig. 29. Wave soldering footprint for SC-74; TSOP6 (SOT457)
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
14 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
11. Revision history
Table 11. Revision history
Document ID
Release date
Data sheet status
Change
notice
Supersedes
NCR320U_NCR321U v.1
20181211
Product data sheet
-
-
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
15 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
equipment, nor in applications where failure or malfunction of an Nexperia
product can reasonably be expected to result in personal injury, death or
severe property or environmental damage. Nexperia and its suppliers accept
no liability for inclusion and/or use of Nexperia products in such equipment or
applications and therefore such inclusion and/or use is at the customer's own
risk.
12. Legal information
Data sheet status
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
Document status Product
Definition
[1][2]
status [3]
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no representation
or warranty that such applications will be suitable for the specified use
without further testing or modification.
Objective [short]
data sheet
Development
This document contains data from
the objective specification for
product development.
Preliminary [short]
data sheet
Qualification
Production
This document contains data from
the preliminary specification.
Customers are responsible for the design and operation of their applications
and products using Nexperia products, and Nexperia accepts no liability for
any assistance with applications or customer product design. It is customer’s
sole responsibility to determine whether the Nexperia product is suitable
and fit for the customer’s applications and products planned, as well as
for the planned application and use of customer’s third party customer(s).
Customers should provide appropriate design and operating safeguards to
minimize the risks associated with their applications and products.
Product [short]
data sheet
This document contains the product
specification.
[1] Please consult the most recently issued document before initiating or
completing a design.
[2] The term 'short data sheet' is explained in section "Definitions".
[3] The product status of device(s) described in this document may have
changed since this document was published and may differ in case of
multiple devices. The latest product status information is available on
the internet at https://www.nexperia.com.
Nexperia does not accept any liability related to any default, damage, costs
or problem which is based on any weakness or default in the customer’s
applications or products, or the application or use by customer’s third party
customer(s). Customer is responsible for doing all necessary testing for the
customer’s applications and products using Nexperia products in order to
avoid a default of the applications and the products or of the application or
use by customer’s third party customer(s). Nexperia does not accept any
liability in this respect.
Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any representations or
warranties as to the accuracy or completeness of information included herein
and shall have no liability for the consequences of use of such information.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those
given in the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is
intended for quick reference only and should not be relied upon to contain
detailed and full information. For detailed and full information see the relevant
full data sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Terms and conditions of commercial sale — Nexperia products are
sold subject to the general terms and conditions of commercial sale, as
published at http://www.nexperia.com/profile/terms, unless otherwise agreed
in a valid written individual agreement. In case an individual agreement is
concluded only the terms and conditions of the respective agreement shall
apply. Nexperia hereby expressly objects to applying the customer’s general
terms and conditions with regard to the purchase of Nexperia products by
customer.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and customer have explicitly
agreed otherwise in writing. In no event however, shall an agreement be
valid in which the Nexperia product is deemed to offer functions and qualities
beyond those described in the Product data sheet.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
Disclaimers
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Limited warranty and liability — Information in this document is believed
to be accurate and reliable. However, Nexperia does not give any
representations or warranties, expressed or implied, as to the accuracy
or completeness of such information and shall have no liability for the
consequences of use of such information. Nexperia takes no responsibility
for the content in this document if provided by an information source outside
of Nexperia.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
In no event shall Nexperia be liable for any indirect, incidental, punitive,
special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal
or replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Trademarks
Notice: All referenced brands, product names, service names and
trademarks are the property of their respective owners.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s aggregate and cumulative liability towards customer
for the products described herein shall be limited in accordance with the
Terms and conditions of commercial sale of Nexperia.
Right to make changes — Nexperia reserves the right to make changes
to information published in this document, including without limitation
specifications and product descriptions, at any time and without notice. This
document supersedes and replaces all information supplied prior to the
publication hereof.
Suitability for use in automotive applications — This Nexperia product
has been qualified for use in automotive applications. Unless otherwise
agreed in writing, the product is not designed, authorized or warranted to
be suitable for use in life support, life-critical or safety-critical systems or
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
16 / 17
Nexperia
NCR320U / NCR321U
250 mA LED driver in SOT457
Contents
1. Product profile..............................................................1
1.1. General description......................................................1
1.2. Features and benefits..................................................1
1.3. Applications................................................................. 1
1.4. Quick reference data................................................... 2
2. Pinning information......................................................2
3. Ordering information....................................................2
4. Marking..........................................................................2
5. Limiting values............................................................. 3
6. Thermal characteristics............................................... 4
7. Characteristics..............................................................5
8. Application information............................................. 11
9. Package outline.......................................................... 13
10. Soldering................................................................... 14
11. Revision history........................................................15
12. Legal information......................................................16
© Nexperia B.V. 2018. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 11 December 2018
©
NCR320U_NCR321U
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2018. All rights reserved
Product data sheet
Rev. 1 — 11 December 2018
17 / 17
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