MCP73837T-FCI/UN

Overview

The MCP73837T-FCI/UN is a single-cell lithium-ion and lithium-polymer battery charge management controller manufactured by Microchip Technology. It operates within an input voltage range of 3.75 V to 6 V and provides a maximum output current of 1.2 A with a regulated output voltage of 4.2 V. The device is housed in a compact MSOP-10 package designed for surface-mount installation. It supports an operating temperature range from -40°C to +85°C, ensuring reliable performance across various environmental conditions.

Feature Summary

• Integrates automatic switching between USB and DC power inputs to manage charging sources seamlessly.
• Provides complete linear charge management control for single-cell lithium-based batteries.
• Includes thermal regulation features to maintain safe operating temperatures during the charging cycle.

Applications

• Portable electronic devices requiring single-cell battery charging
• USB-powered consumer electronics
• Mobile communication hardware

Procurement Notes

Verify the specific suffix codes against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with system input voltage limits before integration. Confirm RoHS compliance status through current datasheets. Validate pinout configurations for PCB layout accuracy. Cross-reference ordering information with authorized distributors to ensure component authenticity.

Selection Notes

Select this component for applications requiring integrated source switching between USB and external DC supplies. It is suitable for designs needing a compact solution for single-cell lithium battery management. Consider the MSOP-10 package constraints for board space limitations. Evaluate the 1.2 A output capability against specific battery charging requirements. Verify that the 3.75 V to 6 V input range matches the available power supply architecture.

Part Context

This part belongs to the MCP7383x series of charge management controllers from Microchip Technology. The series focuses on providing efficient and safe charging solutions for portable devices. The MCP73837 variant specifically addresses systems requiring dual-input source management. It complements other models in the family that may offer different current ratings or packaging options.

Replacement Considerations

Review the MCP73838-FCI/UN as a potential alternative within the same manufacturer lineup. Compare pinout compatibility and electrical specifications before substitution. Verify that any replacement maintains the required input voltage range and output current capabilities.

FAQ

What types of batteries are supported by this controller?

The MCP73837T-FCI/UN supports single-cell lithium-ion and lithium-polymer batteries.

How does the device handle multiple power sources?

It automatically switches between USB and DC inputs to prioritize the available power source for charging.