Based on switched capacitor system theory,a multi-output charge pump was designed,which could provide supply voltage for both gate and source drivers in AMOLED display driver IC.In the charge pump,mixed control mode was adopted,and for different loads of gate and source driver circuits,different regulator loops were designed to fix output voltages with higher power efficiency,lower VDH ripple and supply noise.Simulation based on 0.18 μm HVCMOS process demonstrated that the circuit had a small VDH ripple voltage and a power efficiency up to 94.54% when supply voltage changed from 2.6 V to 3.3 V.