Simplify low-power lighting-driven automotive LED drivers

Diodes products cover a wide range of industries, including the stand-alone, logic, analog and mixed-signal semiconductor markets. The company has expanded its range of automotive LED drivers to introduce the BCR4xxUQ family to simplify the drive of low-power lighting. LED technology is replacing traditional bulbs used in automobiles : Includes exterior lighting from side lights, welcome lights, pedal lights, to ceiling lights, ambient lights, dashboard lights and button backlights. The BCR4xxUQ series is designed to meet the needs of these applications, providing simplicity, compactness and flexibility. Way to drive low power LED strips.

Each device in the BCR4xxUQ family provides a default current output that does not require any external components, or can provide between 10mA and 100mA (BCR401UQ, BCR402UQ, BCR405UQ), 200mA (BCR420UQ) or 350mA (BCR421UQ) with errors ±10% adjustable constant current. All devices in the series are available in industry standard SOT26 and small DFN2020 package options. The thinner 0.6mm DFN2020 is designed for edge lighting applications and requires less invasive and lower package sizes All devices include a negative temperature coefficient that reduces the LED driver current as the internal temperature rises, thereby protecting and extending the life of the LED. In addition, the linear topology used also makes the device virtually EMI free.

With a wide operating voltage range of 1.4V and 40V and a total power consumption of up to 1.7W, these devices can be used to drive larger LED strips while still providing adequate transient protection in 12V automotive power systems. The BCR421UQ has the advantage of PWM dimming directly from a 3.3V MCU signal up to 25kHz and 1% duty cycle.

Linear Constant Current Regulator Designed for LED Lighting All products in the BCR4xxUQ series are now in volume production.