RT4720A Overview
RT4720A is a triple channels DC/DC converter which is designed to provide the power of AMOLED. It integrates step up DC/DC and an inverting converter to provide the positive and negative output voltage required by AMOLED. For the portable application, board space and efficiency are always major concerns.
RT4720A Key Features
- Boost Converter to Supply Positive AVDD Voltage Fixed 5.8V or 7.7V
- 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 50mA for Fixed 5.8V or 7.7V 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