The TPS5450 is a high-output-current PWMconverter that integrates a low resistance high sideN-channel MOSFET. Included on the substrate withthe listed features are a high performance voltageerror amplifier that provides tight voltage regulationaccuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the inputvoltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed- forward circuit to improve the transient response.Using the ENA pin， shutdown supply current isreduced to 18 μA typically. Other features include anactive-high enable， overcurrent limiting， overvoltageprotection and thermal shutdown. To reduce designcomplexity and external component count， theTPS5450 feedback loop is internally compensated. The TPS5450 device is available in a thermallyenhanced， 8-pin SOIC PowerPAD? package. TIprovides evaluation modules and software tool to aidin achieving high-performance power supply designsto meet aggressive equipment development cycl