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Analog Circuit Design by Jim Williams, Bob Dobkin

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3

Power conditioning for notebook and palmtop systems

Robert Dobkin, Carl Nelson, Dennis O’Neill, Steve Pietkiewicz, Tim Skovmand and Milt Wilcox

Introduction

Notebook and palmtop systems need a multiplicity of regulated voltages developed from a single battery. Small size, light weight, and high efficiency are mandatory for competitive solutions in this area. Small increases in efficiency extend battery life, making the final product much more usable with no increase in weight. Additionally, high efficiency minimizes the heat sinks needed on the power regulating components, further reducing system weight and size.

Battery systems include NiCad, nickel-hydride, lead acid, and rechargeable lithium, as well as throw-away alkaline batteries. The ability ...

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