1. The nominal output current of the driving chip requires greater than 1.2-1.5A. As a LED lamp bead for lighting, the operating current of LED lamp beads with a power of 1W is 350mA, and the LED lamp bead operating current with a power of 3W is 700mA. Big current, the driver IC selected by LED lamp beaded lighting lamps must have a satisfactory current output. When planning the product, the driver IC operation must be the best job area of 70-90%of the full output.

2. The output current of the driving chip must be stable for a long time. In this way

Regarding the output current, the driver's chip must be selected in front of the factory or invested in the production line, and adjust the resistance value of the current setting resistance (RS) on the PCB board to make the LED lamp beads produced The light and brightness of similar LED lamp beads is the same.

3. The input voltage scale of the driving chip should satisfy the DC8-40V to cover up the needs of the use surface. If the resistance can be greater than 45V; When the voltage is high, the output DC voltage will also be high. If the driver IC cannot adapt to the width voltage scale, it will often be penetrated when the power grid voltage increases, and the LED lamp beads will be burned.

4. Driving the chip's anti -EMI, noise, and high -voltage ability of high voltage can also be related to whether the entire LED lamp bead product can be smoothly passed through CE and UL certification. Therefore Production process.

5. The packaging of driving chips is conducive to the rapid heat dissipation of the chip tube core. Here we briefly experiment.

6. The power consumption requirements of the driving chip itself are less than 0.5W, and the frequency of the switching operation requires greater than 120Hz. Avoiding the shining of industrial frequency disturbances. LED lamp beads green lighting promotes driving chips to plan towards stand -alone. LED lamp bead lighting is inseparable from driving chips. Therefore, LED lamp bead driving ICs that require multiple functions.