BCR 320U E6327 / BCR 321U E6327

LED Driver

Datasheet

7

Revision 2.1, 2015-01-28

1

LED Driver

1.1

Features

1.2

Applications

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Architectural LED lighting

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Channel letters for advertising, LED strips for decorative lighting

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Retail lighting in fridge, freezer case and vending machines

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

1.3

General Description

The BCR 320U E6327 / BCR 321U E6327 provides a low-cost solution for driving 0.5 W LEDs with a typical LED

current of 150 mA to 200 mA. Internal breakdown voltage is higher than 16 V which is the maximum voltage the

LED driver can sustain when the output is directly connected to supply voltage.

The BCR 320U E6327 / BCR 321U E6327 can be operated with a supply voltage of more than 16 V considering

the voltage drop of the LED load which reduces the output voltage to the maximum rating of the driver.

The enable pin of BCR 320U E6327 can withstand a maximum voltage of 25 V which can be increased adding a

series resistor in front of the enable pin reducing the voltage at the enable pin below 25 V.

The digital input pin of BCR 321U E6327 allows dimming via a micro controller with frequencies up to 10 kHz.

A reduction of the output current at higher temperatures is the result of the negative temperature coefficient of -

0.2 %/K of the LED driver.

With no need for additional external components like inductors, capacitors and free wheeling diodes, the BCR

320U E6327 / BCR 321U E6327 LED drivers are a cost-efficient and PCB-area saving solution for driving 0.5 W

LEDs.

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LED drive current preset to 10 mA

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Continuous output current up to 250 mA with an external resistor

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Easy paralleling of drivers to increase current

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Supply voltage up to 25 V

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Low side current control

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Digital PWM input up to 10 kHz frequency (BCR 321U E6327)

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Up to 1 W power dissipation in a small SC74 package

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Negative thermal coefficient of -0.2 %/K reduces output current at higher temperatures

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RoHS compliant (Pb-free) package

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Automotive qualified according AEC Q101

SC74-3D