RT7203BT Datasheet | Richtek

Description The RT7203BT is a programmable controller with integration of super charge protocols, and the built-in feedback pensation. An internal MCU is designed in to handle various proprietary protocols via the D+/Dinterface. This controller is a specific design with high integration for off-line AC-DC converters possessing high power density. The RT7203BT integrates a constant voltage loop, a constant current loop and the built-in pensation in feedback control to better regulate the design, this IC not only possesses a feature of ponent saving via its feedback pensation, but also provides an enhanced transient response and safety protections via the integration of diverse functions. In applications of high precision control, dual operational amplifiers are adopted in the Digital-to Analog Converter (DAC) to provide reference voltages used for regulation of voltage loop and current loop in programming the constant voltage (CV) and the constant current (CC), respectively. Ordering Information - Programmed Firmware Code AABBX AA: Application Code BB: Model Code X: Customer Approved Version Code Package Type S: SOP-8 Lead Plating System G: Green (Halogen Free and Pb Free) Note: The products are: - Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020. - Suitable for use in Sn Pb or Pb-free soldering processes. Features - Protocol Support - Proprietary Protocols - Highly Integrated - Suited for 3V to 13V VDD Range - Embedded MCU with a Mask ROM of 16k B, an OTP-ROM of 16k B, and an SRAM of 1.5k B - Built-In Shunt Regulators for Constant Voltage and Constant Current Control - Built-In Feedback pensation - Built-In Temperature Sensing - Built-In 10-bit Analog-to-Digital Converter - VDD Pin for Quick Discharge of Output Capacitor - < 3.3m A Operating Current in Normal Mode - < 1.5m A Operating Current in Idle Mode - < 900A Operating Current in Green Mode - Protection - Adaptive Output Overvoltage Protection - Adaptive Undervoltage...