BibTeX
@MISC{In_•usb,
author = {V In and V Out},
title = {• USB Powered Devices • Portable Equipment},
year = {}
}
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Abstract
The NCP1529 step−down DC−DC converter is a monolithic integrated circuit for portable applications powered from one cell Li−ion or three cell Alkaline/NiCd/NiMH batteries. The device is able to deliver up to 1.0 A on an output voltage range externally adjustable from 0.9 V to 3.9 V or fixed at 1.2 V or 1.35 V. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built−in 1.7 MHz (nominal) oscillator which reduces component size by allowing a small inductor and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency. Additional features include integrated soft−start, cycle−by−cycle current limiting and thermal shutdown protection. The NCP1529 is available in a space saving, low profile 2x2x0.5 mm UDFN6 package and TSOP−5 package.
Keyphrases
usb powered device portable equipment low profile monolithic integrated circuit space saving small inductor cell li ion dc dc converter integrated soft start component size cycle current limiting thermal shutdown protection output voltage range portable application mm udfn6 package external part count additional feature synchronous rectification cell alkaline nicd nimh battery
