NCR402U [NEXPERIA]

20 mA LED driver in SOT457Production;


型号：	NCR402U
厂家：	Nexperia
描述：	20 mA LED driver in SOT457Production
文件：	总15页 (文件大小：1248K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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 1.4 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

Table 1.

Symbol

I_out

Quick reference data

Parameter

Conditions

Min

Typ

Max Unit

stabilized output current

supply voltage

V_S= 10 V; V_out= 8.6 V

V_S

NCR402U

Nexperia

20 mA LED driver

2. Pinning information

Table 2.

Pinning

Pin Symbol

Description

ground

Simplified outline

Graphic symbol

GND

IOUT

output current

supply voltage

output current

external resistor

IOUT

REXT

aaa-010101

3. Ordering information

Table 3.

Ordering information

Type number

Package

Name

Description

Version

NCR402U

SC-74

plastic surface-mounted package; 6 leads

SOT457

(TSOP6)

4. Marking

Table 4.

Marking codes

Type number

NCR402U

Marking code

NCR402U

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Product data sheet

Rev. 1 — 10 December 2013

2 of 15

NCR402U

Nexperia

20 mA LED driver

5. Limiting values

Table 5.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol

Parameter

Conditions

Min

Max

Unit

I_out

stabilized output current if

external resistor is used

V_S

supply voltage

V_out

V_R

output voltage

V_S= 40 V

[1]

[2]

[3]

[4]

[5]

reverse voltage

total power dissipation

0.5

P_tot

T_amb 25 C

475

650

750

1100

150

+150

C

T_j

junction temperature

ambient temperature

storage temperature

T_amb

T_stg

55

65

C

[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.

aaa-010053

tot

(W)

0.8

(1)

(2)

0.6

0.4

0.2

-75

-25

125

175

(°C)

amb

(1) FR4 PCB, 4-layer copper; standard footprint.

(2) FR4 PCB, single-sided copper; standard footprint.

Fig 1. Power derating curve

NCR402U

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Product data sheet

Rev. 1 — 10 December 2013

3 of 15

NCR402U

Nexperia

20 mA LED driver

6. Thermal characteristics

Table 6.

Symbol

R_th(j-a)

Thermal characteristics

Parameter

Conditions

Min

Typ

Max

265

190

165

115

Unit

K/W

[1]

[2]

[3]

[4]

thermal resistance from junction in free air

to ambient

R_th(j-sp)

thermal resistance from junction in free air

to solder point

[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; single-sided 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.

aaa-010054

th(j-a)

(K/W)

duty cycle = 1

0.75

0.5

0.33

0.2

0.1

0.05

0.02

0.01

-5

-4

-3

-2

-1

(s)

FR4 PCB, single-sided copper, standard footprint

Fig 2. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values

NCR402U

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Product data sheet

Rev. 1 — 10 December 2013

4 of 15

NCR402U

Nexperia

20 mA LED driver

aaa-010055

th(j-a)

(K/W)

duty cycle = 1

0.75

0.5

0.33

0.2

0.1

0.05

0.02

0.01

-5

-4

-3

-2

-1

(s)

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

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Product data sheet

Rev. 1 — 10 December 2013

5 of 15

NCR402U

Nexperia

20 mA LED driver

7. Characteristics

Table 7.

Characteristics

T_amb= 25 C; pulse test: t_P 300 s;  = 0.02; unless otherwise specified.

Symbol

Parameter

Conditions

Min

340

Typ

Max

Unit

A



I_out

stabilized output current

ground current

V_S= 10 V; V_out= 8.6 V

V_S= 10 V; I_out= 0 A

I_Rint= 20 mA

I_GND

R_int

420

500

internal resistance

V_Rint

voltage drop at internal

resistance R_int

I_out= 20 mA

0.85

V_Smin

lowest sufficient supply

voltage overhead V_S V_out

I_out> 17 mA

1.4

I_out/ (I_out T_amb

)

stabilized output current

change over ambient

temperature

V_S= 10 V; V_out= 8.6 V

0.3

%/K

I_out/ (I_out V_S)

stabilized output current

change over supply voltage V_S V_out= 1.4 V

V_S= 10 V;

0.8

%/V

aaa-010056

aaa-010057

2.4

GND

= 24 Ω

ext

(mA)

out

amb

= 80 °C

(mA)

= 75 Ω

ext

1.6

= open

ext

amb

= 25 °C

0.8

amb

= -40 °C

(V)

V (V)

V_S V_out= 1.4 V; T_amb= 25 C

I_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

NCR402U

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Product data sheet

Rev. 1 — 10 December 2013

6 of 15

NCR402U

Nexperia

20 mA LED driver

aaa-010059

aaa-010058

- V

out

= 1.4 V -2 V

out

(mA)

out

(mA)

= -40 °C

= 25 °C

amb

- V

out

= 1 V

amb

= 80 °C

amb

(V)

R_ext= open; T_amb= 25 C

V_S V_out= 1.4 V; R_ext= 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

aaa-010098

100

out

(mA)

amb

= -40 °C

amb

= 25 °C

amb

= 80 °C

100

150

200

(Ω)

ext

V_S= 10 V; V_out= 8.6 V

Fig 8. Output current as a function of external resistor; typical values

NCR402U

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Product data sheet

Rev. 1 — 10 December 2013

7 of 15

NCR402U

Nexperia

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 R_ext. Figure 8 gives a first indication for

choosing the external resistor R_ext. 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.

ext

int

REXT

IOUT

out

LED

GND

aaa-010022

Fig 9. LED driver application diagram

The output can be switched ON and OFF by connecting a Resistor-Equipped Transistor

(RET), e.g. PDTC124XU; see Figure 10.

ext

REXT

IOUT

GND

out

OUT

IN/

OUT

LED

006aaa025

Fig 10. Switching the current ON/OFF; application diagram

NCR402U

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Product data sheet

Rev. 1 — 10 December 2013

8 of 15

NCR402U

Nexperia

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

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Product data sheet

Rev. 1 — 10 December 2013

9 of 15

NCR402U

Nexperia

20 mA LED driver

10. Package outline

Plastic surface-mounted package (TSOP6); 6 leads

SOT457

pin 1

index

M B

detail X

2 mm

scale

DIMENSIONS (mm are the original dimensions)

UNIT

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

0.95

0.2

0.1

REFERENCES

JEDEC JEITA

EUROPEAN

PROJECTION

OUTLINE

VERSION

ISSUE DATE

IEC

05-11-07

06-03-16

SOT457

SC-74

Fig 11. Package outline SOT457 (SC-74)

NCR402U

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Product data sheet

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10 of 15

NCR402U

Nexperia

20 mA LED driver

11. Soldering

3.45

1.95

0.55

(6×)

solder lands

solder resist

0.45

(6×)

0.95

3.3 2.825

solder paste

occupied area

0.7

Dimensions in mm

(6×)

0.8

(6×)

2.4

sot457_fr

Fig 12. Reflow soldering footprint for SOT457 (SC-74)

5.3

1.5

(4×)

solder lands

solder resist

occupied area

1.475

0.45

(2×)

5.05

1.475

Dimensions in mm

preferred transport

direction during soldering

1.45

(6×)

2.85

sot457_fw

Fig 13. Wave soldering footprint for SOT457 (SC-74)

NCR402U

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Product data sheet

Rev. 1 — 10 December 2013

11 of 15

NCR402U

Nexperia

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

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Product data sheet

Rev. 1 — 10 December 2013

12 of 15

NCR402U

Nexperia

20 mA LED driver

13. Legal information

13.1 Data sheet status

Document status^[1][2]

Product status^[3]

Development

Definition

Objective [short] data sheet

This document contains data from the objective specification for product development.

This document contains data from the preliminary specification.

This document contains the product specification.

Preliminary [short] data sheet Qualification

Product [short] data sheet Production

[1]

[2]

[3]

Please consult the most recently issued document before initiating or completing a design.

The term ‘short data sheet’ is explained in section “Definitions”.

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.nexperia.com.

Suitability for use in automotive applications — This Nexperia

product has been qualified for use in automotive

13.2 Definitions

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 equipment, nor in applications where failure or

malfunction of a 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.

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.

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.

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.

Customers are responsible for the design and operation of their applications

and products using Nexperia products, and Nexperia

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.

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.

Nexperia does not accept any liability related to any default,

13.3 Disclaimers

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

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.

the products or of the application or use by customer’s third party

customer(s). Nexperia does not accept any liability in this respect.

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.

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.

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.

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.

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.

NCR402U

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Product data sheet

Rev. 1 — 10 December 2013

13 of 15

NCR402U

Nexperia

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. The English version shall prevail in case of any discrepancy

between the translated and English versions.

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.

13.4 Trademarks

Notice: All referenced brands, product names, service names and trademarks

are the property of their respective owners.

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.

14. Contact information

For more information, please visit: http://www.nexperia.com

For sales office addresses, please send an email to: salesaddresses@nexperia.com

NCR402U

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Product data sheet

Rev. 1 — 10 December 2013

14 of 15

NCR402U

Nexperia

20 mA LED driver

15. Contents

Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1

1.2

1.3

1.4

General description . . . . . . . . . . . . . . . . . . . . . 1

Features and benefits. . . . . . . . . . . . . . . . . . . . 1

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Quick reference data . . . . . . . . . . . . . . . . . . . . 1

Pinning information. . . . . . . . . . . . . . . . . . . . . . 2

Ordering information. . . . . . . . . . . . . . . . . . . . . 2

Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 3

Thermal characteristics . . . . . . . . . . . . . . . . . . 4

Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 6

Application information. . . . . . . . . . . . . . . . . . . 8

Test information. . . . . . . . . . . . . . . . . . . . . . . . . 9

Quality information . . . . . . . . . . . . . . . . . . . . . . 9

Package outline . . . . . . . . . . . . . . . . . . . . . . . . 10

Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Revision history. . . . . . . . . . . . . . . . . . . . . . . . 12

9.1

Legal information. . . . . . . . . . . . . . . . . . . . . . . 13

Data sheet status . . . . . . . . . . . . . . . . . . . . . . 13

Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 14

13.1

13.2

13.3

13.4

Contact information. . . . . . . . . . . . . . . . . . . . . 14

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

For more information, please visit: http://www.nexperia.com

For sales office addresses, please send an email to: salesaddresses@nexperia.com

Date of release: 10 December 2013

NCR402U [NEXPERIA]

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