MCP73843-410I/MS

Overview

The MCP73843-410I/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 and provides a regulated output voltage of 4.121 V with a maximum output current of 10 mA. The device features an integrated safety timer and thermal regulation to ensure safe charging profiles. It is housed in an 8-pin MSOP package, measuring 3 x 3 x 0.95 mm, and supports surface mount installation. The component functions reliably across an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Integrated safety timer prevents overcharging conditions
• Thermal regulation reduces charge current during high temperature operation
• Indicates charge status via dedicated status pin

Applications

• Single-cell lithium-ion battery protection circuits
• Lithium-polymer battery management systems
• Portable electronic devices requiring compact power management

Procurement Notes

Verify the specific suffix 'I/MS' to confirm the industrial temperature range and MSOP-8 packaging. Confirm availability status as some listings indicate end-of-life notifications or discontinuation. Ensure compatibility with existing PCB footprints for the 8-pin MSOP form factor before procurement.

Selection Notes

Select this component when a fixed 4.1 V output is required for specific lithium chemistry variants. The 10 mA output current limits suitability to low-power applications. Verify that the input voltage source remains within the 4.5 V to 12 V operational window. Consider the MSOP-8 package constraints for thermal dissipation in dense layouts.

Part Context

This part belongs to the MCP7384x family of charge management controllers from Microchip Technology. It shares functional similarities with other variants like the MCP73844 but differs in output voltage specifications. The family is designed for simple, cost-effective charging solutions without external MOSFETs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.