STRX6769B,Off-Line Quasi-Resonant Switching Regulator with Built-In MOSFET,Power Supply IC

The STRX6769B is a high-performance quasi-resonant topology IC designed for off-line switching power supplies. It integrates a controller IC and an avalanche-energy-guaranteed MOSFET in a compact TO-3P package, making it ideal for universal input and 230 VAC applications. This IC offers superior efficiency with features like soft switching and bottom-skip mode, which minimizes frequency increases during light loads. The STRX6769B is equipped with auto-standby and manual standby modes for ultra-low power consumption. Multiple protection features, including pulse-by-pulse current limiting, overvoltage, and overload protection, ensure reliable operation in demanding environments. It is an ideal choice for applications such as set-top boxes, LCD TVs, monitors, and other SMPS-based systems.

With its built-in MOSFET, the STRX6769B supports up to 310W output power at 230 VAC and 200W with universal input. The IC’s compact design and robust performance make it suitable for space-constrained and high-reliability applications.

• Quasi-Resonant Topology IC - Ensures lower EMI noise and soft switching for improved performance in SMPS applications.
• Integrated Avalanche-Guaranteed MOSFET - Provides enhanced reliability and eliminates the need for VDSS derating.
• Auto-Standby and Manual Standby Modes - Minimizes power consumption under light load conditions.
• High-Efficiency Operation - Soft switching and bottom-skip mode improve system-level efficiency across varying load conditions.
• Wide Application Range - Suitable for SMPS in LCD TVs, monitors, printers, set-top boxes, and scanners.
• Robust Protection Features - Includes Overvoltage Protection (OVP), Overcurrent Protection (OCP), Overload Protection (OLP), and maximum on-time limits for enhanced safety.