MCP73843T-410I/MS

Overview

The MCP73843T-410I/MS is a linear charge management controller designed for single-cell lithium-ion and lithium-polymer batteries. It operates within a supply voltage range of 4.5 V to 12 V, delivering a maximum output current of 10 mA. The device provides a precise regulated output voltage of 4.121 V. It functions in an industrial temperature range from -40°C to +85°C and consumes a typical operating supply current of 4 mA. The component is housed in an 8-pin MSOP surface-mount package.

Feature Summary

• Integrates a safety timer to terminate charging if the process exceeds a predefined duration
• Indicates battery status through dedicated charge status and fault indicator pins
• Automatically terminates charging when the cell reaches the programmed voltage threshold

Applications

• Portable electronic devices requiring single-cell lithium battery protection
• Consumer electronics with limited space for power management components
• Industrial control systems utilizing lithium-ion or lithium-polymer power sources

Procurement Notes

Verify the specific suffix I/MS confirms the industrial temperature grade and MSOP-8 package configuration. Confirm the 410 designation matches the required 4.121 V output voltage for the target application. Check official Microchip documentation for current production status, as discontinuation notices may affect long-term availability. Ensure compatibility with existing PCB footprints for the specified surface-mount package.

Selection Notes

Select this component when a low-current charging solution under 10 mA is sufficient for the battery capacity. The fixed 4.121 V output voltage must align with the specific chemistry requirements of the connected lithium cell. Consider the MSOP-8 package dimensions against available board space constraints. Verify that the input supply voltage remains within the 4.5 V to 12 V operational window during all system states.

Part Context

This part belongs to the MCP738xx series of highly integrated charge management controllers from Microchip Technology. These devices are engineered for space-limited applications, combining linear charging regulation with safety features in compact packages. The series supports various output voltages and currents to accommodate different single-cell lithium battery configurations across consumer and industrial markets.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.