The RT7202KLA is a programmable controller with high integration, including the internal feedback compensation and V2 (regulated voltage for internal MCU) inside. An internal MCU is designed to meet proprietary protocols via the CC1/CC2/D+/D- interface. This controller is a specific design for off-line AC-DC converters to achieve the high power density of a fast charge system. The RT7202KLA can share the output power through Master/Slave I2C communication. The built-in feedback compensation not only reduces the external components, but also enhances the transient response. For the safety consideration, the RT7202KLA provides comprehensive protections, including LPS protection and accurate internal Over-Temperature Protection (OTP).
In applications requiring high-precision control, a dual operational amplifier is adopted in the Digital-to-Analog Converter (DAC) to serve reference voltages used for regulation of voltage loop and current loop in programming the constant voltage (CV) and the constant current (CC).


  • USB Type-C Controller in Source Application for Single-Port or Multi-Port Charger/Adapter of Smartphone, Tablet, Notebook, and Other Electronics
  • USB Type-C Controller in Sink Application for IoT Devices of Power Over Ethernet, Smart Speaker, Projector, and Other Electronics
Key Spec.
Status Active
PD Version PD2.0;PD3.0;PPS
MCU Integrated Yes
External Power Path Control N-MOSFET Driver
Internal Power Path VCONN 5V 20mA
Iq (Typ) (μA) 5500
Realtime VBUS Monitoring Yes
Max Output Voltage (V) 28
Syn. Rectifier No
CC Pins Pin 22 (CC2);Pin 23 (CC1)
VBUS Discharge By VBUS
Features Constant-Current Regulation;Internal Compensation;OCP;OVP;SCP;UVP
Package Type WQFN4x4-24
  • Protocol Support
    ► USB PD2.0/PD3.0 and PPS
    ► UFCS
    ► Proprietary Protocols
  • Highly Integrated
    ► Suited for 3V to 22V VDD Range
    ► Embedded MCU with a Mask ROM of 32kB, an OTP-ROM of 16kB, and an SRAM of 2kB
    ► Built-in Shunt Regulators for Constant Voltage and Constant Current Control
    ► Built-in Feedback Compensation with Soft Start for LPS
    ► Built-in VCONN Power (5V/20mA)
    ► VDD Pin for Quick Discharge of Output Capacitor
    ► Supported High-Side Current Sensing
    ► Supported Linear Cable Compensation
    ► Supported Master/Slave I2C Communication
    ► Supported VIN and LPS Detection
    ► < 6.6mA Operating Current in Normal Mode
    ► < 2.2mA Operating Current in Sleep Mode
    ► < 1150μA Operating Current in Green Mode
  • Protection
    ► Adaptive Output Over-Voltage Protection
    ► Adaptive Under-Voltage Protection
    ► CC1/CC2/D+/D-/RT Over-Voltage Protection
    ► Firmware-Programmable Over-Current Protection
    ► Firmware-Programmable Constant Current Protection
    ► Firmware-Programmable Over-Temperature Protection
    ► Firmware-Programmable LPS Protection
    ► Internal Over-Temperature Protection
TitleLast UpdateDownload
Programmable Multi-Protocol Controller for 20V Output with Power Sharing2021/12/30
Technical Documents
TitleLast UpdateDownload
Richtek Selection Guide [Oct., 2022]2022/10/01