November 2014
Intermediate to advanced
1136 pages
50h 29m
English
Content preview from Analog Circuit Design Volume Three
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Chapter 114
1μA IQ synchronous boost converter extends battery life in portable devices
Goran Perica
Abstract
A 1μA IQ synchronous boost converter that extends battery life in portable devices is described.
Keywords
Synchronous boost converter
LTC1322
Introduction
Boost converters are regularly used in portable devices to produce higher output voltages from lower battery input voltages. Common battery configurations include two to three alkaline or NiMH cells or, increasingly, Li-Ion batteries, yielding a typical input voltage between 1.8V and 4.8V.
The 12V output converter shown in Figure 114.1 is designed to run from any typical small battery power source. This design centers around the LTC3122 boost converter, which can efficiently ...
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