Current reference source circuit, chip and electronic equipment

The utility model discloses a current reference source circuit, a chip and an electronic device, which belong to the technical field of integrated circuits, the current reference source circuit comprises a first current mirror, a second current mirror, a third current mirror and a fourth current mirror, the current input ends of the first current mirror and the second current mirror are both connected with power supply voltage, and the fourth current mirror is connected with the chip. The current output by the mirror current output ends of the first current mirror and the second current mirror has a first preset proportion; the saturation current of the first NPN triode, the saturation current of the second NPN triode, the saturation current of the third NPN triode, the saturation current of the fourth NPN triode and the saturation current of the fifth NPN triode have a second preset proportion. The proportional relation of output currents between the first current mirror and the second current mirror and the