NCR405U Datasheet by Nexperia USA Inc.

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1. Product profile
1.1 General description
LED driver consisting of resistor-equipped PNP transistor with two diodes on one chip in
an SOT457 (SC-74) plastic package.
1.2 Features and benefits
Stabilized output current of 50 mA
High current accuracy at supply voltage variation
Low voltage overhead of 1.4 V
Qualified according to AEC-Q101
Reduces component count and board space
High power dissipation of 750 mW
Stabilized output current adjustable up to 65 mA when an external resistor is used
1.3 Applications
Constant current LED driver
Generic constant current source
Automotive applications
1.4 Quick reference data
NCR405U
50 mA LED driver in SOT457
Rev. 1 — 10 December 2013 Product data sheet
SOT457
Table 1. Quick reference data
Symbol Parameter Conditions Min Typ Max Unit
Iout stabilized output current VS = 10 V; Vout = 8.6 V 42 50 58 mA
VSsupply voltage - - 40 V
WE] NN
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 2 of 15
NXP Semiconductors NCR405U
50 mA LED driver
2. Pinning information
3. Ordering information
4. Marking
Table 2. Pinning
Pin Symbol Description Simplified outline Graphic symbol
1 GND ground
2 IOUT output current
3 IOUT output current
4 VS supply voltage
5 IOUT output current
6 REXT external resistor
132
4
56
546
12 3
aaa-010101
Table 3. Ordering information
Type number Package
Name Description Version
NCR405U SC-74
(TSOP6) plastic surface-mounted package; 6 leads SOT457
Table 4. Marking codes
Type number Marking code
NCR405U DC
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 3 of 15
NXP Semiconductors NCR405U
50 mA LED driver
5. Limiting values
[1] Between all terminals.
[2] Device mounted on an FR4 Printed-Circuit Board (PCB); single-sided copper; tin-plated and standard
footprint.
[3] Device mounted on an FR4 PCB; single-sided copper; tin-plated and mounting pad for output 1 cm2.
[4] Device mounted on an FR4 PCB; 4-layer copper; tin-plated and standard footprint.
[5] Device mounted on an FR4 PCB; 4-layer copper; tin-plated and mounting pad for output 1 cm2.
Table 5. 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 -65mA
VSsupply voltage - 40 V
Vout output voltage VS = 40 V - 38 V
VRreverse voltage [1] -0.5V
Ptot total power dissipation Tamb 25 C[2] -475mW
Tamb 25 C[3] -650mW
Tamb 25 C[4] -750mW
Tamb 25 C[5] - 1100 mW
Tjjunction temperature - 150 C
Tamb ambient temperature 55 +150 C
Tstg storage temperature 65 +150 C
(1) FR4 PCB, 4-layer copper; standard footprint.
(2) FR4 PCB, single-sided copper; standard footprint.
Fig 1. Power derating curve
Tamb (°C)
-75 17512525 75-25
aaa-010053
0.4
0.6
0.2
0.8
1
Ptot
(W)
0
(1)
(2)
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 4 of 15
NXP Semiconductors NCR405U
50 mA LED driver
6. Thermal characteristics
[1] Device mounted on an FR4 PCB; single-sided copper; tin-plated and standard footprint.
[2] Device mounted on an FR4 PCB; single-sided copper; tin-plated and mounting pad for output 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 and mounting pad for output 1 cm2.
Table 6. Thermal characteristics
Symbol Parameter Conditions Min Typ Max Unit
Rth(j-a) thermal resistance from junction
to ambient in free air [1] --265K/W
[2] --190K/W
[3] --165K/W
[4] --115K/W
Rth(j-sp) thermal resistance from junction
to solder point in free air - - 50 K/W
FR4 PCB, single-sided copper, standard footprint
Fig 2. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 5 of 15
NXP Semiconductors NCR405U
50 mA LED driver
FR4 PCB, 4-layer copper, standard footprint
Fig 3. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 6 of 15
NXP Semiconductors NCR405U
50 mA LED driver
7. Characteristics
Table 7. Characteristics
Tamb = 25
C; pulse test: tP
300
s;
= 0.02; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Iout stabilized output current VS=10V; V
out =8.6V 425058mA
IGND ground current VS=10V; I
out = 0 A 340 420 500 A
Rint internal resistance IRint = 50 mA 12 16 21
VRint voltage drop at internal
resistance Rint
Iout = 50 mA - 0.80 - V
VSmin lowest sufficient supply
voltage overhead VS Vout
Iout > 42 mA - 1.4 - V
Iout / (Iout Tamb) stabilized output current
change over ambient
temperature
VS=10V; V
out =8.6V - 0.3 - %/K
Iout / (Iout VS) stabilized output current
change over supply voltage VS=10V;
VSVout =1.4V -1-%/V
VS Vout = 1.4 V; Tamb = 25 CI
out = 0 mA
Fig 4. Output current as a function of supply voltage;
typical values Fig 5. Ground current as a function of supply
voltage; typical values
aaa-010288
102
Iout
(mA)
10
VS (V)
0403010 20
Rext = 56 Ω
Rext = open
Rext = 82 Ω
VS (V)
0403010 20
aaa-010057
0.8
1.6
2.4
IGND
(mA)
0
Tamb = 80 °C
Tamb = -40 °C
Tamb = 25 °C
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 7 of 15
NXP Semiconductors NCR405U
50 mA LED driver
Rext = open; Tamb = 25 CV
S Vout = 1.4 V; Rext = open
Fig 6. Output current as a function of supply voltage;
typical values Fig 7. Output current as a function of supply voltage;
typical values
VS = 10 V; Vout = 8.6 V
Fig 8. Output current as a function of external resistor; typical values
aaa-010289
102
Iout
(mA)
10
VS (V)
0403010 20
VS - Vout = 1.4 V - 2 V
VS - Vout = 1 V
aaa-010290
102
Iout
(mA)
10
VS (V)
0403010 20
Tamb = -40 °C
Tamb = 25 °C
Tamb = 80 °C
102
Iout
(mA)
10
Rext (Ω)
0403010 20
aaa-010291
Tamb = -40 °C
Tamb = 25 °C
Tamb = 80 °C
Figure 9 Figure 8 Figure 10 SZ V
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 8 of 15
NXP Semiconductors NCR405U
50 mA LED driver
8. Application information
Figure 9 shows a typical application circuit for an LED driver. The constant current
ensures a constant LED brightness. The output current can be adjusted between 50 mA
and 65 mA by connecting an external resistor Rext. Figure 8 gives a first indication for
choosing the external resistor Rext. The output current slightly decreases when the power
load at LED driver increases. This effect is due to the self heating of the device and the
negative thermal coefficient of the output current.
The output can be switched ON and OFF by connecting a Resistor-Equipped Transistor
(RET), e.g. PDTC124XU; see Figure 10.
Fig 9. LED driver application diagram
Fig 10. Switching the current ON/OFF; application diagram
aaa-010022
V
CC
V
S
R
ext
REXT
IOUT
I
out
LED
GND
R
int
006aaa025
IN/
OUT
V
CC
VS
R
ext
REXT
IOUT
I
out
LED
GND
GND
OUT
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 9 of 15
NXP Semiconductors NCR405U
50 mA LED driver
9. Test information
9.1 Quality information
This product has been qualified in accordance with the Automotive Electronics Council
(AEC) standard Q101 - Stress test qualification for discrete semiconductors, and is
suitable for use in automotive applications.
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 10 of 15
NXP Semiconductors NCR405U
50 mA LED driver
10. Package outline
Fig 11. Package outline SOT457 (SC-74)
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
SOT457 SC-74
wBM
bp
D
e
pin 1
index A
A1
Lp
Q
detail X
HE
E
vMA
AB
y
scale
c
X
132
4
56
0 1 2 mm
Plastic surface-mounted package (TSOP6); 6 leads SOT457
UNIT A1bpcDEHELpQywv
mm 0.1
0.013 0.40
0.25 3.1
2.7
0.26
0.10 1.7
1.3
e
0.95 3.0
2.5 0.2 0.10.2
DIMENSIONS (mm are the original dimensions)
0.6
0.2 0.33
0.23
A
1.1
0.9
05-11-07
06-03-16
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 11 of 15
NXP Semiconductors NCR405U
50 mA LED driver
11. Soldering
Fig 12. Reflow soldering footprint for SOT457 (SC-74)
Fig 13. Wave soldering footprint for SOT457 (SC-74)
solder lands
solder resist
occupied area
solder paste
sot457_fr
3.45
1.95
2.8253.3
0.45
(6×)
0.55
(6×)
0.7
(6×)
0.8
(6×)
2.4
0.95
0.95
Dimensions in mm
sot457_fw
5.3
5.05
1.45
(6×)
0.45
(2×)
1.5
(4×)
2.85
1.475
1.475 solder lands
solder resist
occupied area
preferred transport
direction during soldering
Dimensions in mm
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 12 of 15
NXP Semiconductors NCR405U
50 mA LED driver
12. Revision history
Table 8. Revision history
Document ID Release date Data sheet status Change notice Supersedes
NCR405U v.1 20131210 Product data sheet - -
NCR405U All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 10 December 2013 13 of 15
NXP Semiconductors NCR405U
50 mA LED driver
13. Legal information
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[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 URL http://www.nxp.com.
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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 NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
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Notwithstanding any damages that customer might incur for any reason
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limitation specifications and product descriptions, at any time and without
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Suitability for use in automotive applications — This NXP
Semiconductors product has been qualified for use in automotive
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Applications — Applications that are described herein for any of these
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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.
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products are sold subject to the general terms and conditions of commercial
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Document status[1][2] Product status[3] Definition
Objective [short] data sheet Development This document contains data from the objective specification for product development.
Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.
Product [short] data sheet Production This document contains the product specification.
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Product data sheet Rev. 1 — 10 December 2013 14 of 15
NXP Semiconductors NCR405U
50 mA LED driver
No offer to sell or license — Nothing in this document may be interpreted or
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Export control — This document as well as the item(s) described herein
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Quick reference data The Quick reference data is an extract of the
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document, and as such is not complete, exhaustive or legally binding.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
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Notice: All referenced brands, product names, service names and trademarks
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14. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
NXP Semiconductors NCR405U
50 mA LED driver
© NXP B.V. 2013. All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 10 December 2013
Document identifier: NCR405U
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
15. 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 . . . . . . . . . . . . . . . . . . . . 1
2 Pinning information. . . . . . . . . . . . . . . . . . . . . . 2
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 2
4 Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 3
6 Thermal characteristics . . . . . . . . . . . . . . . . . . 4
7 Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 6
8 Application information. . . . . . . . . . . . . . . . . . . 8
9 Test information. . . . . . . . . . . . . . . . . . . . . . . . . 9
9.1 Quality information . . . . . . . . . . . . . . . . . . . . . . 9
10 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 10
11 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
12 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 12
13 Legal information. . . . . . . . . . . . . . . . . . . . . . . 13
13.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 13
13.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
13.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 13
13.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 14
14 Contact information. . . . . . . . . . . . . . . . . . . . . 14
15 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15