BCR421UE6327XT Infineon Technologies, BCR421UE6327XT Datasheet

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BCR421UE6327XT

Manufacturer Part Number
BCR421UE6327XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.BCR421UE6327XT.pdf (12 pages)

Specifications of BCR421UE6327XT

Operating Temperature (max)
150C
Pin Count
6
Mounting
Surface Mount
Power Dissipation
1W
Operating Supply Voltage (max)
40V
Lead Free Status / Rohs Status
Supplier Unconfirmed
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
1
BCR420U / BCR421U
6
5
4
2010-01-15
1
2
3

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BCR421UE6327XT 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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