The RICHTEK IC is high quality!  Boost Converter to Supply Positive AVDD Voltage from 5.8V to 7.9V
 Boost Converter to Supply AMOLED Positive Voltage 4.6V
 Inverter Converter to Supply AMOLED Negative Voltage from 1.4V to 5.4V
 Maximum Output Current up to 300mA for AMOLED Positive & Negative Power Supply
 Maximum Output Current up to 55mA for AVDD Output Voltage
 Typical Peak Efficiency : 90% (40mA to 150mA)
 PWM Mode @ 1.5MHz Switching Frequency
 High Output Voltage Accuracy
 Excellent Line and Load Transient
 Excellent Line and Load Regulation
 Programmable Negative and AVDD Voltage by SWIRE Pin
 Fast Outputs Discharge Function
 Low Quiescent Current < 1A in Shutdown Mode
 Internal Soft-Start to limit Inrush Current
 Over-Temperature Protection (OTP)
 Over-Current Protection (OCP)
 Short Circuit Protection (SCP)