STR-A6252M Datasheet | Sanken

Sanken Power Devices from Allegro Micro Systems Sw Ritecghuilnagtors Approximate Scale 1:1 Package DIP-8 Features AND BENEFITS 67 k Hz PWM with ±5% frequency jittering for EMI noise filtering and cost reduction Rugged 650 V avalanche-rated MOSFET: - Simplified surge absorption - No VDSS derating required Low RDS(on) : 2.8 Ω maximum Auto-burst mode for stand-by operation or light loads; less transformer audible noise Built-in leading edge blanking Soft start and low start-up current; start-up circuit disabled in operation Auto-burst stand-by (intermittent operation) input power <0.1 W at no load Built-in constant-voltage/constant current (CV/CC) Multiple protections: - Pulse-by-pulse overcurrent protection (OCP) - Overload protection (OLP) with auto restart - Latching overvoltage protection (OVP) - Undervoltage lockout (UVLO) with hysteresis - Latching thermal shutdown (TSD) Universal-Input 20 W 67 k Hz Flyback Switching Regulators The STR-A6252M is a 67 k Hz PWM topology (with ±5% frequency jittering for minimum EMI) regulator specifically designed to satisfy the requirements for increased integration and reliability in flyback converters. It incorporates a primary control and drive circuit with an avalanche-rated power MOSFET. This is a higher-frequency version of the STR-A6252. Covering the power range from below 24 watts for a 230 VAC input, or to 20 watts for a universal (85 to 264 VAC) input, this device can be used in a wide range of applications, from DVD players and VCR player/recorders to ac adapters for cellular phones and digital cameras. An auto-burst standby function reduces power consumption at light load, while multiple protections, including the avalanche-energy guaranteed MOSFET, provide high reliability of system design. Cycle-by-cycle current limiting, undervoltage lockout with hysteresis, overvoltage protection, and thermal shutdown protect the power supply during the normal overload and fault conditions. Overvoltage protection and...