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                  Home > Step Down Switching Regulators
                  UD05208 Datasheet
                    

                  1.5MHz, 2A, VFB=0.6V SYNCHRONOUS STEP-DOWN CONVERTER

                   

                   

                   

                  DESCRIPTION

                   

                  UTC UD05208 devices are synchronous step-down converters

                  optimized for small solution size and high efficiency. The devices

                  integrate switches capable of delivering an output current up to 2A.

                  The devices are based on an adaptive on time with valley current

                  mode control scheme. Typical operating frequency is 1.5MHz at

                  medium to heavy loads. The devices are optimized to achieve very

                  low output voltage ripple even with small external components and

                  feature an excellent load transient response. During a light load,

                  the UD05208 automatically enter into Power Save Mode at the

                  lowest quiescent current (50μA typ) to maintain high efficiency over

                  the entire load current range. In shutdown, the current consumption

                  is reduced to 1μA. The UD05208 provide an adjustable output

                  voltage via an external resistor divider. The output voltage start-up

                  ramp is controlled by an internal soft start, typically 250 μs. Power

                  sequencing is possible by configuring the Enable pin. Other

                  features like over current protection and over temperature

                  protection 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

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