PCL1254-BR Optoelectronics

LED Indication - Discrete

PCL1254-BR is a type of LED discrete display whose application field and working principle are of great interest to those involved in LED indicator design. Typically, LED indicators are used to provide feedback or directional cues to users for thing such as motion detection, on/off status, temperature indications and more. Many of today\'s products, products, industrial and consumer alike, have some type of LED displays, which makes it all the more important that engineers have a firm understanding of the technology behind them.

Application Field

PCL1254-BR’s application field includes automotive electronics, marine UI/UX, indoor/outdoor signage and other applications where small yet strong signals of light are desired. Because of their discrete size, the PCL1254-BR can be used in applications that require minimal space, making them ideal for tight spaces, and small devices. Additionally, the PCL1254-BR has wide angle VIS and uses a common cathode, making them a great option to replace other LED market indicators.

Working Principle

The most basic LED design is a single diode connected to a voltage source, a resistor, and a decoupling capacitor for protection. When reverse-bias voltage is applied to a diode, it conducts current and the LED emits light. When the reverse-bias voltage is removed, the diode stops conducting and the LED turns off. The PCL1254-BR has a common cathode, so by controlling the current flow through the cathode, each LED can be controlled independently.

The PCL1254-BR uses a buck-boost LED driver, which converts the input voltage to a fixed LED forward-bias voltage and regulates the LED current output by controlling the LED driver voltage. The LED forward-bias voltage is determined by a constant voltage reference voltage and the LED current is determined by an N-channel MOSFET switch. The MOSFET switch is driven by a feedback controller, which sets the LED driver voltage. This feedback controller also controls the brightness of the LED.

Conclusion

The PCL1254-BR is a small and discrete LED indicator that has a wide range of applications. Its working principle is based on the simple operation of a single diode, but its advantages come from the buck-boost driver and the feedback controller, which allow the user to control the brightness and direction of the LED. Whether used for product feedback, status indication, or motion detection, the PCL1254-BR discrete LED is an invaluable addition to the field of LED indica animations.