The LTC4120EUD#PBF is an integrated wireless power receiver and buck battery charger from Analog Devices. It utilizes 400mA wireless charging technology to deliver power to a system’s battery, which then supplies power to a device. LTC4120EUD#PBF is a single-chip, high-efficiency half-bridge buck battery charger that uses wireless power transfer (WPT) to quickly charge single-cell Lithium-Ion (Li-Ion) batteries. The integrated buck and synchronous rectification simplify system design and reduce component count, providing a cost-effective, space-saving solution. The integrated BatteryOK output provides feedback on battery impedance so users can confirm that the battery is present and charging correctly. The adjustable frequency/duty-cycle and selectable Synchronous Rectification (SR) enable high-efficiency power delivery and fine-tuning for optimal efficiency and system performance.