STR-W6251D Datasheet | Allegro MicroSystems

STR-W6251D 30 W-Universal Input/45 W-230 Vac Input PWM Switching Regulators Features and Benefits - Overcurrent protection (OCP) with ac input voltage pensation function; no additional peripheral circuits required- minimizes dependency of OCP on ac input - Overload protection (OLP) with integrated timer reduces power stress (temperature rise) at overload condition, requires no peripheral ponents - Avalanche-guaranteed MOSFET improves device capability of withstanding excess surge voltage, providing a simple surge absorber circuit without breakdown voltage derating - Start-up circuit eliminates the need for a start-up resistor, and helps to reduce input power consumption Continued on the next page… Description The STR-W6200D series are current-mode PWM ICs that incorporate controller chips. These devices are manufactured using a proprietary high-voltage BCD process, and avalancheguaranteed MOSFETs. These elements allow power supply systems designs that are highly reliable and simple, with fewer peripheral ponents. These ICs also provide Auto-Burst mode operation, which lowers input power requirements at light loads, and improves efficiency over the entire load range and universal-input range. Applicatons include: - - - - TV set top box LCD PC monitor, LCD TV Printer, scanner General consumer, PC, and industrial applications requiring SMPS power supply with standby mode Package: TO-220 Not to scale Functional Block Diagram 7.1 V STARTUP UVLO 15.5 V/ 8.9 V 7.1 V D/ST VREG 28.5 V OVP ELP TSD R SQ =1.6 m A I startup DMAX 75% RQ S DRV PWM OSC SQ...