MCP73841T-410I/UN

Overview

The MCP73841T-410I/UN is a linear charge management controller designed for single-cell lithium-ion and lithium-polymer batteries. It features a preset 4.1V regulation accuracy of ±0.5% maximum. The device supports programmable charge current and includes safety timers with automatic end-of-charge control. It operates within an input voltage range of 4.5V to 12V and functions across a temperature range of -40°C to +85°C. The component is housed in a space-saving 10-pin MSOP package.

Feature Summary

• Combines high-accuracy constant-voltage and constant-current regulation with cell preconditioning capabilities.
• Integrates advanced safety timers and automatic power-down when input power is removed.
• Provides charge status output suitable for direct LED drive indication.

Applications

• Lithium-Ion/Lithium-Polymer battery chargers
• Cellular telephones
• Personal data assistants

Procurement Notes

Verify the specific suffix 'I/UN' against official Microchip documentation to confirm industrial temperature rating and plastic MSOP-10 packaging details. Ensure compatibility with system input voltage ranges between 4.5V and 12V. Confirm that the 4.1V preset output aligns with the target battery chemistry requirements before integration.

Selection Notes

Select this component for applications requiring precise 4.1V charging termination with minimal external components. The integrated safety timer and preconditioning features simplify design for deeply depleted cells. Consider the MSOP-10 footprint for space-constrained portable electronics where high accuracy is critical.

Part Context

This part belongs to the MCP7384X family of advanced linear charge management controllers. It shares functional similarities with the MCP73842 but differs in preset voltage options, supporting 4.1V and 4.2V configurations compared to the 8.2V and 8.4V variants found in other family members.

Replacement Considerations

The MCP73841T-420I/UN serves as a direct substitute if the application requires a 4.2V preset instead of 4.1V. Other family members like the MCP73843 offer similar functionality in an 8-pin MSOP package.