BCR420UFD/BCR421UFD Current Regulators

Product Highlights > BCR420UFD/BCR421UFD Current Regulators

            BCR420UFD/BCR421UFD Current Regulators
                    Diodes' BCR420UFD and BCR421UFD are 10 mA to 350 mA constant current regulators in a low-profile DFN2020 package for LED edge lighting applications
    

Image of Diodes' BCR420UFD/BCR421UFD Current Regulators Diodes' BCR420U and BCR421U constant current regulators provide a simple means of driving low current LED strips and panels in commercial and industrial lighting sectors. Particularly suiting those applications that benefit from the improved efficiency, flexibility, and longer life offered by LEDs as an emerging lighting source.

With a low-profile DFN2020 package, these regulators are designed for 12 V and 24 V LED edge lighting strips giving an increased light output efficiency as they only require 1.4 V supply allowing more LEDs in the string. Supporting adjustable currents from 10 mA to 350 mA allow for platform designs based on a single device to be used across multiple LED strip applications, considerably easing a manufacturer’s qualification and supply chain.

These LED drivers also enhance system reliability, as the monolithic integration of a transistor, diodes, and resistors both simplify system design and reduce component count.

Features
DFN2020 < 0.6 mm height Low-profile height for thinner applications such as side emitting LED strips 10 mA to 350 mA settable current Simplify LED driving as current is preset to 10 mA with ±10% regulation and the flexibility to adjust up to 200 mA (BCR420U) and 350 mA (BCR421U) PWM < 1% duty cycle at 25 kHz LED brightness can be accurately PWM controlled allowing low light dimming		1.4 V to 40 V supply voltage Increased light output efficiency as only 1.4 V supply required, allowing more LEDs in the string 40 V gives sufficient headroom for voltage spikes and LED short failures, while preserving the LED brightness and longevity Negative temperature coefficient Reduces the current with rising temp which helps to increase the LED lifespan Enables current sharing for parallel operation for > 100 mA LED current
Applications
Targeted at 12 V and 24 V linear LED strips and panels in: Advertising signage Emergency lighting strips Refrigeration and vending machines Building light strips Architectural and decorative General lighting