UD05208数据手册UTC中文资料规格书

描述 Description

UTC UD05208 devices are synchronous step-down convertersoptimized for small solution size and high efficiency. The devicesintegrate switches capable of delivering an output current up to 2A.The devices are based on an adaptive on time with valley currentmode control scheme. Typical operating frequency is 1.5MHz atmedium to heavy loads. The devices are optimized to achieve verylow output voltage ripple even with small external components andfeature an excellent load transient response. During a light load,the UD05208 automatically enter into Power Save Mode at thelowest quiescent current (50μA typ) to maintain high efficiency overthe entire load current range. In shutdown, the current consumptionis reduced to 1μA. The UD05208 provide an adjustable outputvoltage via an external resistor divider. The output voltage start-upramp is controlled by an internal soft start, typically 250 μs. Powersequencing is possible by configuring the Enable pin. Other

特性 Features

like over current protection and over temperatureprotection are built in. FEATURES  2.7V to 5.5V Input Voltage Range 1.5MHz Typical Switching Frequency Output Current up to 2A Adaptive On-Time Current Control Power Save Mode for Light Load Efficiency 50μA Operating Quiescent Current Over Current Protection Internal Soft Startup of 250μs (Typ.) Adjustable Output Voltage Thermal Shutdown Protection Available in SOT25 Package