The application note you have requested is available in Acrobat PDF format: APPLICATION NOTE 40: Uninterruptible 5V Supply Has Low Power Consumption (PDF, 1.9MB) A free Acrobat PDF reader is available from: http://www.adobe.com/products/acrobat/readstep.html We Want Your Feedback! Automatic Updates Would you like to be automatically notified when new application notes are published in your areas of interest? Sign up for EE-Mail™. More Information   APP 40: Jul 09, 1998 MAX630 CMOS Micropower Step-Up Switching Regulator Full Data Sheet (PDF, 264kB) MAX666 Dual Mode™ 5V Programmable Micropower Voltage Regulators Full Data Sheet (PDF, 376kB)   Download, PDF Format (1.9MB)  AN40, AN 40, APP40, Appnote40, Appnote 40