Charge management chip and control method

The invention relates to a charge management chip and a control method, and belongs to the field of computer. The charge management chip comprises a control module, a linear charging circuit and a buck charging circuit. The control module is connected with the linear charging circuit, the buck charging circuit and the output end of the charge management chip, the input end of the linear charging circuit and the input end of the buck charging circuit are both connected to the input end of the charge management chip, and the output end of the linear charging circuit and the output end of the buck charging circuit are both connected to the output end of the charge management chip. The charge management chip can improve charge efficiency and shorten charge time.