BCR 421U E6327 Infineon Technologies, BCR 421U E6327 Datasheet

BCR 421U E6327

Manufacturer Part Number

BCR 421U E6327

Description

IC LED DRIVER LINEAR SC74

Manufacturer

Infineon Technologies

Type

Linear (Non-Switching)r

Datasheet

1.BCR_420U_E6327.pdf (12 pages)

Specifications of BCR 421U E6327

Package / Case

SC-74-6

Constant Current

Yes

Topology

Linear (LDO), Low Side, PWM

Number Of Outputs

Internal Driver

Yes

Type - Primary

General Purpose

Frequency

10kHz

Voltage - Supply

40V

Voltage - Output

38V

Mounting Type

Surface Mount

Current - Output / Channel

150mA

Internal Switch(s)

Yes

Low Level Output Current

10 mA

High Level Output Current

150 mA

Operating Supply Voltage

4.5 V to 40 V

Maximum Power Dissipation

1000 mW

Maximum Operating Temperature

+ 150 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 65 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Operating Temperature

Efficiency

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

BCR 421U E6327INTR

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LED Driver

Features

Applications

General Description

The BCR420U/BCR421U provide a low-cost solution for driving 0.25W LEDs with a typical

LED current ILED of 75mA to 150mA. Internal breakdown voltage is >40V, this is the

maximum voltage that the LED driver IC can sustain when connected to it directly.

The BCR420U/BCR421U can be operated at supply voltages of 40V or higher, by simply

stacking a series of LEDs in front of the LED drivers, resulting in a certain voltage drop

depending on the forward voltages of the LEDs, reducing the voltage at the supply pin

of the driver below 40V. A digital input pin (BCR421U) allows dimming via a Microcontroller

with frequencies of up to 10 kHz. A reduction of the output current at higher temperatures

is the result of the negative thermal coefficient of 0.2% /K. of the LED drivers.

With no need for additional external components like inductors, capacitors and

free wheeling diodes, the BCR420U/BCR421U LED drivers are a cost-efficient and

PCB-area saving solution for driving 0.25W LEDs.

Negative thermal coefficient reduces output current

Continuous output current up to 150mA

Suitable for supply voltages of 40V and above

Low side current control, µC compatible

Up to 1W power dissipation in a small SC74 package

Easy paralleling of drivers to increase current

Pb-free (RoHS compliant) package

Automotive qualified according AEC Q101

Architectural LED lighting

Channel letters for advertising, LED strips for decorative lighting

Retail lighting in fridge, freezer case and vending machines

Emergency lighting (e.g. steps lighting, exit way signs etc.)

Ship, train and aircraft interior illumination

with external resistor

PWM input (BCR421U) up to 10kHz

at higher temperatures

BCR420U / BCR421U

2010-01-15

Related parts for BCR 421U E6327

BCR 421U E6327 Summary of contents

Page 1

LED Driver Features Continuous output current up to 150mA with external resistor Suitable for supply voltages of 40V and above Low side current control, µC compatible PWM input (BCR421U 10kHz power dissipation in a small ...

Page 2

Pin Configuration Type Marking BCR420U 40 BCR421U 41 Maximum Ratings Parameter Enable voltage BCR420U BCR421U Output current Output voltage Reverse voltage between all terminals Total power dissipation Junction temperature Storage temperature Thermal Resistance Parameter ...

Page 3

Electrical Characteristics at T Parameter Characteristics Collector-emitter breakdown voltage mA Enable current BCR420U 3 BCR421U EN DC current gain ...

Page 4

Total power dissipation P 1200 mW 1000 900 800 700 600 500 400 300 200 100 Permissible Pulse Load totmax totDC ...

Page 5

BCR420U: Output current versus out out Parameter ext 0.2 Rext = 6 Ohm Rext = 8 Ohm A Rext = 10 Ohm Rext = 15 Ohm ...

Page 6

BCR420U: Output current versus out Parameter A 0.2 A 0.1 0. BCR420U: Output current versus ...

Page 7

BCR420U: Output current versus 2.0 V; out EN out R = Parameter ext 0.15 Rext = 6 Ohm Rext = 8 Ohm A Rext = 10 Ohm 0.05 Rext = 30 ...

Page 8

BCR421U: Output current versus 3 out Parameter A 0.015 A 0.005 BCR421U: Output current versus ...

Page 9

BCR421U: Output current versus 2 out EN out T = Parameter A 0.06 A 0.04 0.03 0.02 0. BCR421U: Output current versus ...

Page 10

Application circuit: Enabling / PWM by micro controller +Vs µ OUT BCR421U Application hints BCR420U / BCR421U serve as an easy to use constant current sources for LEDs. In stand alone application an external resistor can ...

Page 11

Package Outline 2.9 (2.25 Pin 1 marking Foot Print Marking Layout (Example) Small variations in positioning of Date code, Type code and Manufacture are possible. Pin 1 marking Laser marking Standard Packing Reel ø180 mm = 3.000 Pieces/Reel ...

Page 12

... For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. ...

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