Regulator DC-DC Circuit and Pin of Power Supply Monitor and its Main Features-MAX641/642/643

Published:2011/9/13 2:37:00 Author:Zoey | Keyword: Regulator, DC-DC Circuit, Boost Converter, COMS | From:SeekIC

MAX641/642/643 CMOS DC-DC boost converter is a switched inverted regulator, it has a interior MOS FET that has a peak of 325mA, this FET can constitute an inverted DC-DC converter with a fixed 10-W output. Therein, MAX 641 is 5V, MAX642 is 12V and MAX643 is 15V.For this converter, typical efficiency is 80% and outupt voltage error can be 5% or 10% and typical static current is 135µA. When the input voltage reaches 5V,oscillation frequency will be 45kHz and range of input voltage +2.0V~+16.5V. Maximum voltage of VOUT, LX and LBO terminal is 18V. Peak of output current of LX terminal is 325mA, LBO 50mA. If room temperature drops to below 50℃, power of DIP platic encapsulation will be 625mW, micro platic encapsulation will be 450mA, and ceramic encapsulation 800mW. Working temperature range of MAX641C/632C/643C is 0~+70℃, MAX641E/642E/643E -40~+85℃, MAX641M/642M/643M -55~+125℃. This converter has an interior circuit for low input voltage-detection



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