Power Solution for Wearable AMOLED Products


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The RT4730 is a highly integrated power solution with Buck-Boost, and inverting charge pump to generate positive and negative output voltage. The output voltages can be adjusted with by SWIRE interface protocols. With its input voltage range of 2.9V to 5.2V, the RT4730 is optimized for products powered by single-cell batteries and symmetrical output currents up to 50mA. The RT4730 is available in the WL-CSP-16B 2.34x2.34 (BSC) package.


Key Spec.
Status Active
Vin (min) (V) 2.9
Vin (max) (V) 5.2
Number of Channels 3
Number of Buck Converters 1
Number of Boost Converters 1
Number of Negative Outputs 1
Number of LED Drivers 0
Number of LDO Regulators 3
Application OLED for Watch
Features Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Internal Compensation;OCP;OVP;SCP;UVP
Package Type WL-CSP2.34x2.34-16(BSC)
  • Input Voltage Range : 2.9V to 5.2V
  • Positive Output Voltage AVDD : 3.3V
  • Positive Output Voltage OVDD Range : 2.8V to 4V (Default is 3.3V ±1%)
  • Negative Output Voltage OVSS Range : -0.6V to
    -4V (Default is -3.3V ±1%)
  • Excellent Line/Load Regulation
  • Excellent Line/Load Transient
  • Advanced Power-Save Mode for Light-Load Efficiency
  • Low Output Ripple Voltage
  • Built-in Internal Soft-Start
  • True Output Load Disconnect From Input
  • UVLO, SCP, OCP, OTP, OVP Protection
  • Shutdown Current : Typ. 0.1μA
TitleLast UpdateShareDownload
Power Solution for Wearable AMOLED Products2016/12/16
Technical Documents
TitleLast UpdateShareDownload
Power IC Solutions for IoT/Portable/Wearable/Battery-Powered Applications2020/12/30
Richtek Selection Guide [Oct., 2020]2020/12/30