MCP73833T-FCI/UN

Overview

The MCP73833T-FCI/UN is a charge management controller designed for single-cell lithium-ion and lithium-polymer batteries. It operates within a supply voltage range of 3.75 V to 6 V and delivers an output current of 1.2 A with a regulated charging voltage of 4.2 V. The component is housed in a 10-pin MSOP package and supports surface mount installation. It functions across an operating temperature range from -40°C to +85°C, ensuring reliable performance in various electronic applications requiring precise battery charging management.

Feature Summary

• Integrates complete charge management control with standard safety features for single-cell lithium-based batteries
• Supports programmable constant-current charging with automatic termination upon full charge detection
• Includes thermal regulation to reduce charging rate when die temperature exceeds safe limits

Applications

• Single-cell lithium-ion battery charging systems
• Lithium-polymer battery power management modules
• Portable electronic device battery protection circuits

Procurement Notes

Verify the specific suffix FCI/UN against the manufacturer datasheet to confirm pinout compatibility and package dimensions. Ensure the ordering code matches the required reel or cut tape packaging format. Cross-reference the RoHS status and lead times directly with authorized distributors to maintain supply chain accuracy and compliance with project specifications.

Selection Notes

Select this component for designs requiring a compact solution for single-cell Li-Ion or Li-Po batteries. The 10-MSOP package offers a balance between thermal dissipation and board space efficiency. Consider the 1.2 A output capability when sizing external components and PCB traces to handle the maximum charging current without excessive voltage drop or heating.

Part Context

This part belongs to the MCP7383x family of charge management controllers from Microchip Technology. It is specifically engineered for portable applications where space and cost are critical constraints. The series provides a highly integrated solution that simplifies the design of safe and efficient battery chargers by combining all necessary control logic into a single small-footprint IC.

Replacement Considerations

The MCP73833T-AMI/MF serves as a verified alternative within the same product family, offering identical electrical characteristics but utilizing a DFN-10 package instead of MSOP-10. Designers must account for the physical footprint differences and thermal pad requirements when substituting this component.