MCP73837T-FJI/MF

Overview

The MCP73837T-FJI/MF is a linear Li-ion/Li-Polymer charge management controller from Microchip Technology, housed in a DFN-10 package. It supports an input voltage range of 3.75 V to 6 V and delivers up to 1.2 A output current with a fixed 4.2 V regulation. Designed for USB or DC power sources, it features automatic switching between inputs. The device operates within a temperature range of -40°C to +85°C and includes humidity sensitivity classification.

Feature Summary

• Integrates automatic switching between USB and DC power inputs
• Supports standard charging profiles for lithium-ion and lithium-polymer cells
• Provides thermal regulation to manage heat during high-current charging

Applications

• Portable electronic devices powered by USB
• Battery-powered consumer electronics
• Industrial control modules requiring reliable charge management

Procurement Notes

Verify the suffix MF indicates tube packaging when ordering discrete units. Confirm the T prefix denotes tape-and-reel availability if high-volume production is required. Ensure the FJI designation matches the specific temperature grade and package variant needed for your design. Cross-reference the datasheet revision to confirm pinout compatibility before finalizing procurement.

Selection Notes

Select this component when a compact DFN-10 footprint is preferred over larger packages like MSOP. It is suitable for applications requiring integrated input switching without external diodes. Consider the 1.2 A limit against peak load requirements. Verify that the 3.75 V minimum input voltage aligns with your source capabilities.

Part Context

This part belongs to the MCP7383x family of charge controllers. It shares functional similarities with the MCP73833 and MCP73838 but differs in package options and specific suffix designations. The DFN-10 form factor offers a smaller board area compared to traditional leaded packages while maintaining similar electrical performance characteristics.

Replacement Considerations

MCP73838T-FJI/UN provides equivalent functionality in an MSOP-10 package. MCP73833T-AMI/MF offers a DFN-10 alternative with identical electrical specifications. Verify pin-to-pin compatibility and package dimensions before substituting.