STR-A6153E Datasheet | Allegro MicroSystems

g n i h tors c t i a Sw egul R Universal-Input/20 W Flyback Switching Regulator The STR-A6153E is a PRC topology (fixed off-time) regulator specifically designed to satisfy the requirements for increased integration and reliability in flyback converters. It incorporates a primary control and drive circuit with avalanche-rated power MOSFET. The STRA6153E Features high switching current and avalanche-energy ratings and low on-resistance. Covering the power range from below 24 watts for a 230 VAC input, or 20 watts for a universal (85 to 264 VAC) input, this device can be used in a range of applications, from DVD and VCR players to ac adapters for cellular phones and digital cameras. An auto-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 thermal shutdown are latched after a short delay. The latch may be reset by cycling the input supply. Low start-up current and a low-power standby mode selected from the secondary circuit pletes a prehensive suite of Features . The STR-A6153E is provided in an 8-pin mini-DIP plastic package. Data Sheet 28103.23-...