RT7205A Datasheet | Richtek

Description Features The RT7205A is a highly integrated and programmable SMPS controller at the secondary side. It provides the necessary functions and protections for high efficient and high power density off-line AC-DC converter designs. The RT7205A integrates an MCU to handle various proprietary protocols (e.g., FCP, SCP and AFC) through D+/Dinterface and also support USB Type-C via CC1/CC2 pins. An internal synchronous rectifier controller can optimize efficiency and provide safe operate in both continuousconduction mode (CCM) and discontinuous-conduction mode (DCM) even in the condition of a wide output voltage range of 3V to 12V. Dual operational amplifiers with respectively programmable reference voltages are included for voltage-loop and current-loop regulation to provide programmable constant-voltage (CV) and constant-current (CC) regulation in high precision. l Protocols Supported } SCP, FCP, AFC and Proprietary Protocols } USB Type-C l Highly Integrated } Embedded MCU with an Mask-ROM of 16k B, an OTP-ROM of 8k B, and an SRAM of 0.75k B } Built-in Synchronous Rectifier Driver and Controller } Built-in Charge Pump for a Wide VDD Operation Range of 3V to 12V } Built-in Shunt Regulator for Programmable Constant-Voltage and Constant-Current Control } Programmable Cable pensation } BLD Pin for Quick Discharge of Output Capacitor } USBP Pin for Direct Drive of External Blocking N-MOSFET } Power-Saving Mode in Standby Mode Ordering Information - Programmed Firmware Code AABBX AA : Application Code BB : Model Code X : Customer Approved Version Code l Protection } Adaptive Over-Voltage Protection } Adaptive Under-Voltage Protection } Firmware-Programmable Over-Current Protection } Firmware-Programmable Over-Temperature Protection Package Type QW : WQFN-24L 4x4 (W-Type) Applications (Exposed Pad-Option 2) l Travel Adaptors with Fast Charge Protocols (e.g., FCP, Lead Plating System G : Green (Halogen Free and Pb Free) SCP and AFC) RT7205A Version...