KP18068ESPA

PF>0.7, Five Full High Voltage Linear LED Dimming Chip

KP18068ESPA is a high-precision five-way full voltage LED linear constant current dimming chip, which can meet the requirements of IEC-61000-3-2:2020 specification. The I2C (Inter-Integrated-Circuit Bus) interface can be used to independently set the size of the five currents, and supports various dimming modes. CW channel is analog dimming mode, RGB channel supports analog dimming and chopper dimming mode, and each channel supports 1024 gray level dimming, to meet the dimming requirements in various occasions.

The CW circuit of KP18068ESPA can withstand 500V, and can be directly powered by AC input to drive the high voltage lamp bar, the maximum current is 77.5mA; RGB circuit withstand voltage 500V, maximum current 48mA, to meet the high voltage RGB linear constant current. The KP18068 has the advantage of high constant current accuracy and 0.1% dimming depth.

The KP18068ESPA integrated line voltage compensation function, compensation point and compensation slope have the rating selection function, which can easily meet the high and low voltage constant power requirements without additional devices. At the same time, there is also an integrated overheating protection function, when the chip temperature exceeds the overtemperature protection point, the chip will automatically reduce the output current to ensure system stability.

Main feature

• Meet IEC-61000-3-2:2020 specification requirements

• Five route dimming

• I2C control intelligent dimming, support five simultaneous work

• RGB channel voltage 500V, maximum current 48mA

• CW channel withstand voltage 500V, maximum current 77.5mA

• Single channel 1024 gray level dimming, dimming depth 0.1%

• ±5% constant current output accuracy between chips

• Ultra-low standby power consumption <20mW

• Integrated input line voltage compensation

• RGB channel supports both chopper dimming and analog dimming

• Integrated 500V high voltage power supply circuit

• Integrated overheat protection (OTP)

• Package type ESSOP-10L

Typical application

• LED smart bulb light

• Other LED intelligent lighting, etc