MCP73833-B6I/UN

Overview

The MCP73833-B6I/UN is a single-cell lithium-ion or lithium-polymer battery charge management controller manufactured by Microchip Technology. It supports an input supply voltage range of 3.75 V to 6 V and delivers a programmable charging current up to 1.2 A with a fixed termination voltage of 4.2 V. The device operates within a temperature range of -40°C to +85°C and is housed in a compact MSOP package suitable for surface-mount applications.

Feature Summary

• Integrates complete charge management functions including constant-current and constant-voltage regulation stages
• Incorporates thermal regulation to dynamically reduce charging current based on die temperature
• Provides automatic recharge capability when battery voltage drops below the programmed threshold

Applications

• Portable consumer electronics requiring single-cell Li-Ion or Li-Po power sources
• Handheld devices utilizing USB or wall adapter power supplies
• Battery-powered medical instruments and IoT modules

Procurement Notes

Verify that the specific suffix B6 corresponds to the intended marking code and package variant as defined in the official Microchip datasheet. Confirm compatibility with the target PCB footprint and ensure compliance with RoHS standards before finalizing procurement orders.

Selection Notes

Select this component when a high-output current of 1.2 A is required for rapid charging of single-cell batteries. Ensure the system design accommodates the specified 3.75 V to 6 V input range and utilizes the MSOP package constraints for thermal dissipation and board space limitations.

Part Context

This part belongs to the MCP7383x series of charge management controllers designed for portable applications. It shares functional similarities with other models in the family but is distinguished by its specific output current capabilities and packaging options, serving as a core solution for efficient battery charging systems.

Replacement Considerations

Direct substitutes include MCP73833-AMI/MF and MCP73833-CNI/UN. Verify pinout compatibility and thermal performance characteristics when transitioning between different package types such as DFN or alternative MSOP variants.