MCP73837T-NVI/MF

Overview

The MCP73837T-NVI/MF is a standalone lithium-ion and lithium-polymer battery charge management controller manufactured by Microchip Technology. It integrates an LDO regulator, linear charger, and thermal regulation to support single-cell batteries with input voltages up to 6V. The device offers selectable output voltages of 4.2V, 4.35V, 4.4V, or 4.5V via external resistors. It features a 1A charging current capability, auto-recharge functionality, and status indicators. Packaged in a 10-lead DFN (3x3mm) with an exposed pad for thermal dissipation.

Feature Summary

• Integrated LDO regulator enables direct connection to USB or DC power sources without external pass transistors
• Thermal regulation automatically reduces charging current to maintain safe junction temperature during high-power operation
• Selectable precision output voltage options accommodate various lithium-ion and lithium-polymer battery chemistries
• Auto-recharge feature restores battery capacity when voltage drops below the recharge threshold

Applications

• Portable consumer electronics requiring compact battery charging solutions
• USB-powered devices needing integrated charge management
• Medical equipment utilizing single-cell lithium batteries
• Industrial handheld instruments with strict thermal constraints

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with your system's input voltage and battery chemistry requirements before procurement. Confirm RoHS compliance status through the manufacturer's latest datasheet revision.

Selection Notes

Select this component when a compact, low-component-count solution is required for single-cell Li-Ion/Polymer charging. Consider the 10-DFN package for space-constrained designs. Verify that the selected output voltage matches the target battery specification. Evaluate thermal performance based on expected ambient conditions and PCB copper area.

Part Context

This part belongs to the MCP73837 family of advanced standalone charge controllers. It is designed for applications requiring high integration and minimal external components. The device replaces discrete solutions by combining regulation, charging, and protection functions into a single IC.

Replacement Considerations

Direct replacements include other MCP73837 variants with different suffixes indicating package or temperature variations. Cross-reference with MCP73837T-FCI/MF for similar functionality but verify pinout and electrical specifications carefully.