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Wireless power receiver simplifies contactless battery charging

A first for the company in the wireless battery charging space, the LTC4120 from Linear Technology is a 400mA wireless power receiver designed to simplify contactless battery charging.
The device combines a wireless power receiver with a constant current/constant voltage battery charger, functioning as the receive circuit component in a complete wireless power transfer system.

The unit accepts a rectified 4.2 to 40V input from the receive coil to power a full featured constant current/constant voltage 400mA battery charger that includes programmable charge current, a programmable 3.5 to 11V battery float voltage with ±1% accuracy, battery preconditioning with half hour timeout, bad battery fault detection, NTC thermal protection, charge status and a two hour safety termination timer.

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