Drive chip having switch control-based LED light-adjusting and color-temperature-adjusting function and drive circuit

The invention relates to a drive chip having the switch control-based LED light-adjusting and color-temperature-adjusting function. The drive chip comprises a reference voltage generation circuit, a transmission gate array, a transmission gate, a voltage comparison circuit, a decoding circuit and a memory capacitor. The output end of the reference voltage generation circuit is connected with one end of the transmission gate array. The other end of the transmission gate array is connected with one end of the transmission gate. The other end of the transmission gate is connected with the input end of the voltage comparison circuit and the memory capacitor. The output end of the voltage comparison circuit is connected with the input end of the decoding circuit. The output end of the decoding circuit is connected with the control end of the transmission gate array. The switch control-based LED light-adjusting and color-temperature-adjusting function of the drive chip is independent of any extra control unit, such as a MCU, a wireless remote control or other light modulators. Therefore, the peripheral application of the system is simplified, and the cost of the system is reduced. Meanwhile, the popularization of LED lamps in the field of light-adjusting and color-temperature-adjusting systems is effectively facilitated.