FAN5402UCX

Battery Chargers Overview

The FAN5402UCX is a USB-compliant single-cell lithium-ion switching charger manufactured by Fairchild Semiconductor. It integrates a synchronous buck converter and charge management controller in a compact WLCSP package. The device supports input voltages from 4 V to 6 V, delivering up to 1.45 A of output current with a maximum regulated voltage of 4.4 V. It operates within a temperature range of -40 °C to +85 °C.

Battery Chargers Feature Summary

• Integrates a synchronous buck converter for high-efficiency charging
• Complies with USB battery charging specifications
• Supports single-cell lithium-ion and lithium-polymer batteries

Battery Chargers Applications

• Portable electronic devices requiring USB charging
• Mobile handsets and smartphones
• Personal digital assistants (PDAs)

Battery Chargers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and lead-free status using official documentation. Check for moisture sensitivity level requirements and reflow soldering profile adherence during assembly. Ensure the specific suffix matches the required package variant.

Battery Chargers Selection Notes

Select this component for applications requiring a compact solution footprint for single-cell Li-Ion charging via USB. Consider the 1.45 A output capability and 4.4 V max voltage against system requirements. Evaluate thermal performance within the specified operating temperature range and ensure compatibility with the WLCSP-25 package constraints.

Battery Chargers Part Context

This part belongs to the FAN540x series of USB-compliant single-cell Li-Ion switching chargers. It shares functional similarities with models like the FAN5400 and FAN5401 but offers specific current and voltage parameters tailored for mobile applications. The series emphasizes small solution size and efficiency.

Battery Chargers Replacement Considerations

Potential substitutes include the FAN5400UCX and FAN5401UCX from Fairchild Semiconductor. Verify pinout compatibility and electrical parameter alignment before substitution.