描述 Description

The?TD1457A?is?a?current?mode?monolithic?buck?switching? regulator.? Operating? with? an? input? range? of? 4.5‐40V,? the? TD1457A?delivers?3A?of?continuous?output?current?with?an? integrated? high? side? N‐Channel? MOSFET.? At? light? loads,?? TD1457A? operates? in? low? frequency? to? maintain? high? efficiency? and? low? output? voltage? ripple.? Current? mode? control?provides?tight?load? transient? response? and? cycle‐by‐cycle?current?limiting.? The? TD1457A? guarantees? robustness? with? input? under‐voltage??lockout,??start‐up? current? run‐away? protection,? output? short? protection,? feedback? short? protection?and?thermal?protection.? The?TD1457A?is?available?in?8‐pin?ESOP?package..

特性 Features

4.5V?to?40V?operating?input?range?? 3A?output?current? ? Up?to?94%?efficiency? ? High?efficiency?(>78%)?at?light?load? ? Internal?Soft‐Start? ? Adjustable?switch?frequency?? from?100kHz?to?900kHz? Input?under‐voltage?lockout? ? Start‐up?current?run‐away?protection? ? Output?short?protection? ? Feedback?short?protection? ? Thermal?protection? ??Available?in?ESOP8?package

應用 Application

Distributed?Power?Systems? ?Networking?Systems?FPGA,?DSP,?ASIC?Power?Supplies?Green?Electronics/?Appliances?Notebook?Computers