LTC4125IUFD#PBF

Power Management - Specialized Overview

The LTC4125IUFD#PBF is a wireless power receiver and battery charger IC from Analog Devices. It integrates a resonant wireless power receiver with a synchronous buck battery charger, supporting lithium-ion and lithium-polymer batteries. The device operates within an input voltage range of 3V to 5.5V and provides a regulated output voltage of 4.2V for single-cell charging. It features a step-down DC/DC converter capable of delivering up to 400mA. The component is housed in a 20-lead QFN package and supports Optimum Power Search and Foreign Object Detection.

Power Management - Specialized Feature Summary

• Integrates wireless power reception with synchronous buck battery charging
• Supports Optimum Power Search for efficient energy transfer
• Includes Foreign Object Detection for safety compliance
• Provides isolated step-down DC/DC conversion capability

Power Management - Specialized Applications

• Wireless charging systems for portable electronic devices
• Single-cell lithium-ion battery management in IoT sensors
• Medical implant power reception modules
• Consumer electronics requiring Qi-compliant wireless charging

Power Management - Specialized Procurement Notes

Verify the specific suffix IUFD#PBF against the manufacturer's current datasheet revision to ensure pinout and thermal pad configurations match your PCB layout requirements. Confirm that the industrial temperature grade aligns with your operational environment specifications before finalizing procurement orders.

Power Management - Specialized Selection Notes

Select this component when a combined wireless receiver and linear/buck charger solution is required to minimize board space. Ensure the application design accounts for the thermal dissipation characteristics of the QFN package under maximum load conditions. Validate coil coupling efficiency to maintain stable operation within the specified input voltage window.

Power Management - Specialized Part Context

This part belongs to the LTC4125 family of wireless power receivers. It is distinct from the LTC4120 series by its integrated buck converter capabilities and specific packaging options. The device is designed for applications requiring high integration levels in compact wireless charging ecosystems.

Power Management - Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative components only through direct electrical parameter comparison and official manufacturer cross-reference lists.