LC5556LD

Light-emitting diode (LED) drivers are an important part of the overall lighting system, as they provide the voltage and current control necessary to make sure LEDs perform reliably. The drivers are available in many different shapes and form factors, each suited to different application scenarios. In this article, we are going to look at one particular kind of LED driver that uses the LCC5556LD model; its application field and working principle.

What is an LCC5556LD driver?

The LCC5556LD is an Integrated circuit (IC) that is used to drive LEDs. It is a compact and easy-to-use device that is suitable for a variety of applications, ranging from Dimmable CFL lamps, to high performance LEDs for street lighting and general lighting applications. The LCC5556LD IC contains a 6-channel LED driver, with each channel capable of driving up to 30mA current. The driver can operate in either constant current or constant voltage mode, depending on the application requirements.

LCC5556LD Application Fields

Due to its low power dissipation and high efficiency, the LCC5556LD is widely used in lighting products, such as LED bulbs, LED strips, LED light fixtures, LED displays, and many other LED-based applications.

The LCC5556LD is also used in automotive lighting applications. With the low power rating and current capability, this IC is perfect for controlling LED panels for ambient light, interior lights, exterior lights, and headlight and taillight applications.

LCC5556LD Working Principle

The LCC5556LD operates using a simple and efficient circuit topology. The IC features a built-in voltage regulator that outputs a regulated voltage of 6V. This voltage is then used to drive the high-side power switch. The power switch is responsible for controlling the current to the LEDs and can be configured to regulate current in constant current mode or voltage in constant voltage mode.

In constant current mode, the high-side power switch is used to ensure that the current through the LEDs is regulated. An external resistor is used to set the current, and the driver will ensure that the current level is maintained, regardless of input voltage or LED voltage variations.

In constant voltage mode, the high-side power switch is used to ensure that the LED voltage is held at a constant level despite changes in LED current. An external capacitor is used to set the LED voltage, and the driver will ensure that the voltage level is maintained, regardless of input voltage or LED current variations.

Conclusion

The LCC5556LD is a highly efficient, low power, and easy to implement LED driver IC with a large range of applications. It has the potential to be used in a variety of LED-based lighting applications such as LED bulbs, LED strips, LED light fixtures, LED displays, and automotive lighting applications. The LCC5556LD contains an integrated 6-channel LED driver, where each channel can be configured to operate in either in a constant current or constant voltage mode, depending on the application needs.