描述 Description

The SP7650 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed to be especially attractive for dual supply, 12V or 24V distributed power systems stepped-down with 5V used to power the controller. This lower VCC voltage minimizes power dissipation in the part and is used to drive the top switch. The SP7650 is designed to provide a fully integrated buck regulator solution using a fixed 300kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown and output short circuit protection. The SP7650 is available in the space saving DFN package.

特性 Features

·2.5V to 28V step-down achieved using dual input
·Output voltage down to 0.8V
·3A output capability
·Built in low RDSON power switches (40 mΩ typ)
·Highly integrated design, minimal components
·300 kHz fixed frequency operation
·UVLO detects both VCC and VIN
·Over temperature protection
·Short circuit protection with auto restart
·Wide BW Amp allows type II or III compensation
·Programmable soft-start
·Fast transient response
·High efficiency: greater than 95% possible
·Nonsynchronous start up into a pre-charged output
·Small 7mm x 4mm DFN package

應用 Application

Design ToolsSimulation Models·SPICEModels
·SIMPLISModels