Power management ICs today operate from a variety of input supply sources, ranging from Lithium-Ion, alkaline and Nickel batteries to USB. Battery-powered portable electronic devices place stringent demands on these power ICs to extend battery run time, reduce system noise and save board space. Some key requirements include low quiescent current, low ripple, high efficiency, low input and output voltage. They also demand low dropout, thermal regulation, fast and accurate charging, compact footprint with minimal external components and robustness under varying input and output load conditions. Linear Technology offers a broad family of products to meet these functional demands: full-featured battery chargers for various battery form factors and chemistries, low voltage and low quiescent current low-dropout regulators (LDOs) and low noise, miniature footprint charge pumps. A sampling of these key new products follows.
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