Low Cost Linear Discrete LED Drivers

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Infineon Technologies’ linear-mode LED driver family, BCR401, BCR402, BCR405, and newly introduced BCR450, provides efficient, low cost constant-current solutions for LED strings from 10mA to 700mA.

Our constant-current drivers keep light emission consistent over power supply and temperature variations, eliminate the effect of V_F variation, and help prevent thermal runaway in applications. We also offer low forward-voltage Schottky diodes, including single package reverse polarity protection diode arrays (RPP).

 

FEATURES Constant-current adjustable from 10mA to 60mA, up to 500mW power dissipation Current range may be extended up to 700mA with addition of external “boost” transistor (e.g. BCX68-16) Selection of 18V or 40V maximum rating across driver On/off feature enables PWM/FM modulation LED-circuit protection due to Negative Temperature Coefficient (NTC)   BENEFITS Efficient active current regulation, accuracy of IOUT at ±1%/V voltage variation Maintains consistent light emission across LED strings independent of VF , power supply and temperature variation Enables using more LEDs in one branch due to low voltage drop compared to resistor biasing schemes Eliminates problem of stocking multiple bias resistor values to match incoming LED VF bins

APPLICATIONS Channel lighting Advertising signage Home/office lighting (recess lamps, pendant lamps, etc.) Rope lighting/neon replacement Automotive (e.g. center high mounted stop light “CHMSL”)             Ultra small 2mm x 2.1mm SOT343 package

 

 

 Featured Products

Part Number		Description	Data Sheet	App. Notes
BCR401RE6327XT		Adjustable Low Current LED Driver, Output Current 10-60mA
BCR401WE6327XT		Adjustable Low Current LED Driver, Output Current 10-60mA
BCR402RE6327XT		LED Driver, Output Current 20-60mA
BCR402UE6327XT		LED Driver, Output Current 20-65mA
BCR402WE6327XT		LED Driver, Output Current 20-60mA
BCR405UE6327		LED Driver, Output Current 50-65mA
BCR450E6327ZT		High Precision Controller for High Brightness LEDs

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