Datasheet

ManualsBrandsNXP SEMICONDUCTORS ManualsPMICsPMIC - LED driver Linear TSOP 6 Surface-mount

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 20 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

NCR402U

20 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

out

stabilized output current V

= 10 V; V

out

= 8.6 V 17 20 23 mA

supply voltage - - 40 V

Summary of content (15 pages)

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SO T4 57 NCR402U 20 mA LED driver in SOT457 Rev. 1 — 10 December 2013 Product data sheet 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 20 mA High current accuracy at supply voltage variation Low voltage overhead of 1.
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NCR402U NXP Semiconductors 20 mA LED driver 2. Pinning information Table 2. Pinning Pin Symbol Description Simplified outline 1 GND ground 2 IOUT output current 3 IOUT output current 4 VS supply voltage 5 IOUT output current 6 REXT external resistor 6 5 4 1 2 3 Graphic symbol 6 5 1 2 4 3 aaa-010101 3. Ordering information Table 3.
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NCR402U NXP Semiconductors 20 mA LED driver 5. Limiting values Table 5. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter Iout Conditions Min Max Unit stabilized output current if external resistor is used - 65 mA VS supply voltage - 40 V Vout output voltage VS = 40 V - 38 V [1] - 0.
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NCR402U NXP Semiconductors 20 mA LED driver 6. Thermal characteristics Table 6. Thermal characteristics Symbol Parameter Conditions thermal resistance from junction to ambient Rth(j-a) thermal resistance from junction to solder point Rth(j-sp) in free air Min Typ Max Unit [1] - - 265 K/W [2] - - 190 K/W [3] - - 165 K/W [4] - - 115 K/W - - 50 K/W in free air [1] Device mounted on an FR4 PCB; single-sided copper; tin-plated and standard footprint.
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NCR402U NXP Semiconductors 20 mA LED driver aaa-010055 103 Zth(j-a) (K/W) 102 duty cycle = 1 0.75 0.5 0.33 0.2 0.1 10 0.05 0.02 0.01 0 1 10-5 10-4 10-3 10-2 10-1 1 10 102 tp (s) 103 FR4 PCB, 4-layer copper, standard footprint Fig 3. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values NCR402U Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 December 2013 © NXP B.V. 2013.
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NCR402U NXP Semiconductors 20 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 = 10 V; Vout = 8.6 V 17 20 23 mA IGND ground current VS = 10 V; Iout = 0 A 340 420 500 A Rint internal resistance IRint = 20 mA 36 42 52  VRint voltage drop at internal resistance Rint Iout = 20 mA - 0.
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NCR402U NXP Semiconductors 20 mA LED driver aaa-010058 25 aaa-010059 30 VS - Vout = 1.4 V -2 V Iout (mA) Iout (mA) 20 Tamb = -40 °C VS - Vout = 1 V Tamb = 25 °C 20 15 Tamb = 80 °C 10 10 5 0 0 0 10 20 30 VS (V) 40 Rext = open; Tamb = 25 C Fig 6. 0 10 20 30 VS (V) 40 VS  Vout = 1.4 V; Rext = open Output current as a function of supply voltage; typical values Fig 7.
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NCR402U NXP Semiconductors 20 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 20 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.
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NCR402U NXP Semiconductors 20 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. NCR402U Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 December 2013 © NXP B.V. 2013. All rights reserved.
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NCR402U NXP Semiconductors 20 mA LED driver 10. Package outline Plastic surface-mounted package (TSOP6); 6 leads D SOT457 E B y A HE 6 5 X v M A 4 Q pin 1 index A A1 c 1 2 3 Lp bp e w M B detail X 0 1 2 mm scale DIMENSIONS (mm are the original dimensions) UNIT A A1 bp c D E e HE Lp Q v w y mm 1.1 0.9 0.1 0.013 0.40 0.25 0.26 0.10 3.1 2.7 1.7 1.3 0.95 3.0 2.5 0.6 0.2 0.33 0.23 0.2 0.2 0.
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NCR402U NXP Semiconductors 20 mA LED driver 11. Soldering 3.45 1.95 0.45 0.55 (6×) (6×) 0.95 solder lands solder resist 3.3 2.825 0.95 solder paste occupied area 0.7 (6×) Dimensions in mm 0.8 (6×) 2.4 sot457_fr Fig 12. Reflow soldering footprint for SOT457 (SC-74) 5.3 1.5 (4×) solder lands 1.475 0.45 (2×) 5.05 solder resist occupied area 1.475 Dimensions in mm preferred transport direction during soldering 1.45 (6×) 2.85 sot457_fw Fig 13.
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NCR402U NXP Semiconductors 20 mA LED driver 12. Revision history Table 8. Revision history Document ID Release date Data sheet status Change notice Supersedes NCR402U v.1 20131210 Product data sheet - - NCR402U Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 December 2013 © NXP B.V. 2013. All rights reserved.
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NCR402U NXP Semiconductors 20 mA LED driver 13. Legal information 13.1 Data sheet status 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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NCR402U NXP Semiconductors 20 mA LED driver 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. Translations — A non-English (translated) version of a document is for reference only.
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NCR402U NXP Semiconductors 20 mA LED driver 15. Contents 1 1.1 1.2 1.3 1.4 2 3 4 5 6 7 8 9 9.1 10 11 12 13 13.1 13.2 13.3 13.4 14 15 Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . 1 General description . . . . . . . . . . . . . . . . . . . . . 1 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Quick reference data . . . . . . . . . . . . . . . . . . . . 1 Pinning information . . . . . . . . . . . . .