USB Power Management with LTC3455

Posted on Jan 31, 2013

The LTC3455 seamlessly manages power flow between an AC adapter, USB cable and Li-ion battery, while complying with USB power standards, all from a 4mm ½§ 4mm QFN package. In addtion, two high efficiency synchronous buck converters generate low voltage rails which most USB-powered peripherals require.

The LTC3455 also provides power-on reset signals for the microprocessor, a Hot SwapTM output for powering memory cards as well as an uncommitted gain block suitable for use as a low-battery comparator or an LDO controller. The PCB real estate require

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