MCP73834T-FCI/MF

Overview

The MCP73834T-FCI/MF is a standalone linear charge management controller designed for single-cell lithium-ion and lithium-polymer batteries. It supports input supply voltages from 3.75 V to 6 V and delivers an output current of 1.2 A. The device offers selectable charging termination voltages of 4.2 V, 4.35 V, 4.4 V, or 4.5 V via external resistors. It operates within a temperature range of -40°C to +85°C and is housed in a 10-pin VFDFN package with an exposed pad.

Feature Summary

• Integrated thermal regulation to dynamically adjust charging current based on die temperature
• Selectable charging termination voltage options for various battery chemistries
• Automatic recharge function that resumes charging when battery voltage drops below threshold

Applications

• Portable electronic devices requiring single-cell lithium-ion battery charging
• Lithium-polymer battery management in consumer electronics
• Handheld instruments and medical devices with limited power budgets

Procurement Notes

Verify the specific suffix 'MF' corresponds to the 10-VFDFN (3x3 mm) package with tape and reel shipping. Confirm the manufacturer is Microchip Technology Inc. Ensure the component meets RoHS standards if required by your assembly process. Cross-reference the datasheet revision date to ensure compatibility with your design specifications.

Selection Notes

Select this component when a compact solution for single-cell Li-Ion/Li-Po charging is needed. It is suitable for applications where input voltage is regulated between 3.75 V and 6 V. Consider the exposed pad for thermal performance and the selectable termination voltage for flexibility in battery type support.

Part Context

This part belongs to the MCP73834 family of charge management controllers. It is distinct from the MCP73833 due to its higher supported input voltage range and specific package configuration. The 'T' indicates tape and reel packaging, while 'FCI' denotes the internal termination voltage selection code.

Replacement Considerations

The MCP73834-FCI/UN is a pin-compatible alternative in an MSOP package. Verify package dimensions and thermal characteristics when substituting. Ensure the replacement part supports the same input voltage range and output current requirements.