MCP73838-FJI/UN

Overview

The MCP73838-FJI/UN is a single-cell lithium-ion and lithium-polymer battery charge management controller manufactured by Microchip Technology. It supports input voltages from 3.75 V to 6 V, delivering up to 1.2 A output current with selectable termination voltages of 4.2 V, 4.35 V, 4.4 V, or 4.5 V. The device operates within a temperature range of -40°C to +85°C and utilizes an MSOP-10 package.

Feature Summary

• Integrates auto-switching between USB and DC power sources for seamless power path management
• Provides programmable constant-current and constant-voltage charging profiles for single-cell batteries
• Includes thermal regulation to reduce charging current when die temperature reaches safety limits

Applications

• Portable electronic devices requiring single-cell lithium-ion battery charging
• Lithium-polymer battery management in consumer electronics
• USB-powered gadget power path integration

Procurement Notes

Verify the suffix FJI against official Microchip documentation to confirm specific voltage selection and packaging details. Ensure compatibility with MSOP-10 footprint requirements. Cross-reference datasheet specifications for operating temperature and input voltage ranges before integration into final designs.

Selection Notes

Select this component for applications requiring integrated power path switching and high-efficiency single-cell charging. Consider the MSOP-10 package size constraints and thermal performance requirements. Validate that the required termination voltage matches one of the available options provided by the FJI suffix configuration.

Part Context

This part belongs to the MCP7383x family of charge management controllers designed for portable applications. It shares functional similarities with other Microchip battery chargers but offers specific pinout and feature configurations tailored for compact designs. The FJI suffix denotes specific electrical characteristics and packaging variations within the product line.

Replacement Considerations

MCP73838T-FJI/UN

FAQ

What battery types are supported by the MCP73838-FJI/UN?

The device supports single-cell Lithium-Ion and Lithium-Polymer batteries.

Does the MCP73838-FJI/UN support automatic power source switching?

Yes, it features an integrated power path manager that automatically switches between USB and DC inputs.