• 2.5V to 5.5V Supply Voltage Range
• Single Wire Protocol
• Fixed 4.6V Positive Voltage Output
• Negative Voltage Output from -0.6V to -2.4V per 0.1V by SWIRE Pin
• Auto-Mode Transition of -0.33x/-0.5x Charge Pump
• Built-in Soft-Start
• 50mA Maximum Output Current
• Programmable Output Fast Discharge Function
• High Impedance Output when IC Shutdown
• UVLO, OCP, SCP, OTP Protection
• Shutdown Current < 1µA
• Available in 15-Ball WL-CSP Package


• AMOLED Bias in Portable Device


The RT4723 is a highly integrated Boost and LDO and inverting charge pump to generate positive and negative output voltage. The negative output voltages can be adjusted from -0.6V to -2.4V with 100mV steps by SWIRE interface protocol. The part maintains the highest efficiency by utilizing a -0.33x/-0.5x mode fractional charge pump with automatic mode transition.
With its input voltage range of 2.5V to 5.5V, RT4723 is optimized for products powered by single-cell battery and the output current up to 50mA. The RT4723 is available in WL-CSP-15B 1.39x2.07 (BSC) package to achieve optimized solution for PCB space.