Current mirroring circuit, method and device

The invention relates to a current mirroring circuit, method and device. The current mirroring circuit comprises a mirroring module, a voltage following module and an output module. The mirroring module generates the mirroring current of the mirrored circuit according to the output of the mirrored circuit, the voltage following module clamps the output end of the mirroring module to obtain the mirroring current, and the output module outputs the mirroring current when the mirroring current meets the first preset condition, so that the mirroring current can be more accurate during low-voltage output, and the reliability of the mirroring circuit is improved. And the influence on non-low-voltage output is small. 本申请涉及一种电流镜像电路、方法及装置，电流镜像电路包括镜像模块、电压跟随模块、输出模块。镜像模块根据被镜像电路的输出生成被镜像电路的镜像电流，电压跟随模块对镜像模块的输出端进行钳位以得到镜像电流，输出模块在镜像电流满足第一预设条件时，输出镜像电流，能够在低电压输出时，使得镜像电流更精确，且对非低压输出的影响较小。