MCP73838-FCI/UN

Overview

The MCP73838-FCI/UN is a charge management controller for single-cell lithium-ion and lithium-polymer batteries. It supports dual inputs with automatic switching between USB and DC sources. The device delivers up to 1200 mA output current and offers selectable termination voltages of 4.2 V, 4.35 V, 4.4 V, or 4.5 V. Operating supply voltage ranges from 3.75 V to 6 V. It functions within an industrial temperature range of -40°C to +85°C and is housed in a 10-pin MSOP package.

Feature Summary

• Automatic power source selection between USB and external DC adapters
• Configurable charging termination voltage options for various battery chemistries
• Integrated thermal regulation to manage heat during high-current charging

Applications

• Portable electronic devices requiring single-cell Li-Ion/Polymer charging
• USB-powered consumer electronics
• Battery-powered medical instruments

Procurement Notes

Verify the suffix FCI against official Microchip documentation to confirm the specific termination voltage configuration and package variant. Ensure compatibility with the target system's input voltage range and thermal requirements before integration.

Selection Notes

Select this component when dual-input flexibility and high charging current are required. Compare against the MCP73837 if lower current suffices. Confirm that the available termination voltages match the specific battery cell specifications used in the design.

Part Context

This part belongs to the MCP7383x family of charge management controllers. It shares functional similarities with the MCP73837 but provides higher output current capabilities. The family targets applications needing robust, single-cell charging solutions with minimal external component count.

Replacement Considerations

The MCP73838T-FJI/UN is a documented alternative within the same product line. Verify pinout and electrical parameter alignment before substitution.