SP7651数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

The SP7651 is a high voltage synchronous step-down switching regulator optimized for high efficiency. The part is designed to be especially attractive for dual supply, 12V step-down with 5V used to power the controller. This lower VCC voltage minimizes power dissipation in the part. The SP7651 is designed to provide a fully integrated buck regulator solution using a fixed 900kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown and output short-circuit protection. The SP7651 is available in the space saving 7mm X 4mm DFN package.

特性 Features

·2.5V to 20V step-down achieved using dual input
·Output voltage down to 0.8V
·3A output capability (up to 5A with air flow)
·Built in low RDSON power FETs (40 mΩ typ)
·Highly integrated design, minimal components
·900 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 92% possible
·Nonsynchronous start up into a pre-charged output
·Small 7mm x 4mm DFN package

应用 Application

Design ToolsSimulation Models·SPICEModels
·SIMPLISModels