1 General Description
The RT7204E is a highly integrated, programmable
controller that offers multi-protocol support and
features high-precision shunt regulators for constant
voltage (CV) and constant current (CC) regulation. An
embedded MCU is designed to handle customized
functions with flexibility, ensuring compatibility with
USB PD protocol, Universal Fast Charging
Specification (UFCS), and proprietary protocols via the
CC1, CC2, D+, and D- interface.
This controller is specifically designed for off-line ACDC converters to achieve the high power density of a
fast charging system. The RT7204E is equipped with
rectification detection to sense the AC input voltage
and adaptively configure the power rating. Additionally,
it monitors the PWM switching state to detect AC OFF
conditions. For safety considerations, the RT7204E
provides comprehensive protections, including Limited
Power Source (LPS) protection and precise internal
Over-Temperature Protection (OTP). Furthermore, the
RT7204E can also share the output power through I2C
communication for multi-port applications.
The recommended junction temperature range is
−40C to 125C, and the ambient temperature range
is −40C to 105C.

2 Applications
⚫ USB Type-C Controller in Source Applications for
Single-Port or Multi-Port Charger / Adapters of
Smartphone, Tablet, Notebook, and Other
Electronics

3 Features
⚫ Protocol Support
⚫ USB PD 3.1 and PPS
⚫ Universal Fast Charging Specification (UFCS)
⚫ Proprietary Protocols
⚫ Highly Integrated
⚫ Suited for 3V to 21V VDD Range
⚫ Built-In Shunt Regulators for Constant
Voltage and Constant Current Control
⚫ Built-In 11-bit Analog-to-Digital Converter
(ADC)
⚫ Built-In Linear Regulator
⚫ Built-In Blocking N-MOSFET Driver with SoftStart for Capacitive Load
⚫ VDD Quick Discharge for Output Capacitor
⚫ Built-In Output Bleeder for Quick VBUS
Discharge
⚫ Support High-Side Current Sensing
⚫ Support Programmable Cable Compensation
⚫ Support Input Voltage (VIN) Detection
⚫ Support Slave I2C Communication
⚫ Built-In VCONN Power and Switches
⚫ <5mA Operating Current in Normal Mode
⚫ <2mA Operating Current in Idle Mode
⚫ <1mA Operating Current in Green Mode
⚫ Protection
⚫ VDD Adaptive Output Overvoltage Protection
⚫ VDD Adaptive Undervoltage Protection
⚫ USBP Undervoltage Protection
⚫ CC1/CC2/D+/D-/RT/VTR/GPIO Overvoltage
Protection
⚫ Short-Circuit Protection
⚫ Overcurrent Protection
⚫ Constant Current Protection
⚫ Over-Temperature Protection
⚫ Limited Power Source (LPS) Protection
⚫ Internal Over-Temperature Protection