STR-A6252M

Sanken Power Devices from Allegro MicroSystems STR-A6252M Universal-Input 20 W 67 kHz Flyback Switching Regulators www.datasheet4u.com S Re w it gu chi lat ng ors Package DIP-8 Approximate Scale 1:1 FEATURES AND BENEFITS 67 kHz 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) The STR-A6252M is a 67 kHz 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 rang...