UD05154数据手册UTC中文资料规格书

描述 Description

UTC UD05154 devices are synchronous step-down convertersoptimized for small solution size and high efficiency. The devicesintegrate switches capable of delivering an output current up to1.5A. The devices are based on an adaptive on time with valleycurrent mode control scheme. Typical operating frequency is1.5MHz at medium to heavy loads. The devices are optimized toachieve very low output voltage ripple even with small externalcomponents and feature an excellent load transient response.During a light load, the UD05154 automatically enter into PowerSave Mode at the lowest quiescent current (50μA typ) to maintainhigh efficiency over the entire load current range. In shutdown, thecurrent consumption is reduced to 1μA. The UD05154 provide anadjustable output voltage via an external resistor divider. Theoutput voltage start-up ramp is controlled by an internal soft start,typically 300 μs. Power sequencing is possible by configuring theEnable pin. Other

特性 Features

like over current protection and overtemperature protection are built in. FEATURES 2.7V to 5.5V Input Voltage Range 1.5MHz Typical Switching Frequency Output Current up to 1.5A Adaptive On-Time Current Control Power Save Mode for Light Load Efficiency 50μA Operating Quiescent Current Over Current Protection Internal Soft Startup of 300μs (Typ.) Adjustable Output Voltage Thermal Shutdown Protection