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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 204

Advanced topology USB battery charger optimizes power utilization for faster charging

John Shannon

Abstract

The LTC4055 high performance Li-Ion charger and power controller is described. It uses an intermediate voltage bus topology to yield faster charging and less heating. Its use greatly simplifies PowerPath control in handheld USB compatible products.

Keywords

LTC4055

Li-Ion battery charger

USB battery charger

Linear Technology offers a variety of parts to simplify the task of extracting power from a USB cable, including the new, easy-to-use LTC4055 high performance Li-Ion charger and power controller. The LTC4055 seamlessly manages power flow between an AC adapter, USB cable and Li-Ion battery, all while maintaining ...

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