MCP73833-FCI/UN

Overview

The MCP73833-FCI/UN is a single-cell lithium-ion or lithium-polymer battery charge management controller manufactured by Microchip Technology. It operates within a supply voltage range of 3.75 V to 6 V and provides a regulated output voltage of 4.2 V with a maximum output current of 1.2 A. The device is housed in a 10-pin MSOP package designed for surface mount installation. It supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates complete charge management functions including constant current and constant voltage regulation stages.
• Includes thermal regulation feature that reduces charging current when die temperature reaches a predefined limit.
• Provides status indication via the STAT pin to monitor the charging state of the connected battery.

Applications

• Portable consumer electronics requiring single-cell Li-Ion or Li-Po power sources
• Handheld devices utilizing USB or wall adapter power inputs
• Battery-powered medical instruments

Procurement Notes

Verify the specific suffix FCI/UN against official Microchip documentation to confirm the exact package dimensions and marking codes. Ensure compatibility with the target PCB footprint for the 10-MSOP configuration. Confirm RoHS compliance status through the manufacturer's latest environmental declarations before finalizing procurement orders.

Selection Notes

Select this component for designs requiring integrated protection features such as thermal regulation and input overvoltage protection. It is suitable for applications where space constraints favor the compact MSOP package. Consider the 1.2 A output capability relative to the battery capacity and required charge time specifications.

Part Context

This part belongs to the MCP7383x family of charge management controllers, which are designed for high-current single-cell battery charging applications. The series offers various package options to accommodate different board layout requirements while maintaining consistent electrical performance characteristics across the product line.

Replacement Considerations

The MCP73833T-FCI/UN serves as the tape-and-reel variant of this component. Verify pinout compatibility if substituting with other MCP7383x family members, noting that suffixes may indicate differences in packaging rather than functional changes.