LED Driver IC

IC(integrated circuit) It is a kind of micro electronic device or component, which uses a certain process to interconnect the transistors, diodes, resistors, capacitors, inductors and other components and wiring required in a circuit, make them on a small or several small semiconductor chips or dielectric substrates, and then package them in a tube shell to become a micro structure with the required circuit function; All the components have formed a whole in structure, which makes the electronic components take a big step towards miniaturization, low power consumption and high reliability. It is represented by the letter "IC" in the circuit.

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It can also be called LED driving circuit. In fact, it is a PWM control chip, which is the voltage obtained by detecting the LED current on the resistance after the circuit runs normally. Then it is fed back to the chip to control the internal PWM duty cycle and control dainl to keep the current obtained by the LED in a constant state.

The driver chip has a driver, which refers to the power regulating device of the LED light-emitting module. Due to the special structure of LED, the range of current and voltage it can adapt to is very limited. A slight deviation will lead to the LED can not be lit or the luminescence is unstable, and the chip may be burned out in serious cases.

The power requirements of LED driver chip are very strict. Unlike ordinary bulbs, it can directly use 220V AC mains power. Unlike led, it can only be used through complex circuit transformation design, and it also needs to be equipped with different power adapters. To develop a LED driver chip, we need to comprehensively consider its effective power, constant current accuracy, power supply life, conversion efficiency, electromagnetic compatibility and other factors.

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