MCP73831-3ACI/MC

Battery Chargers Overview

The MCP73831-3ACI/MC is a linear charge management controller for single-cell lithium-ion and lithium-polymer batteries. It operates within a supply voltage range of 3.75 V to 6 V and provides a fixed output voltage of 4.35 V. The device supports programmable charging currents up to 500 mA, set via an external resistor. It utilizes an 8-pin DFN (2x3 mm) package with exposed pad and functions across a temperature range of -40 °C to +85 °C.

Battery Chargers Feature Summary

• Implements complete CC/CV charging algorithm with automatic precharge and termination
• Integrates thermal regulation to limit current based on die temperature
• Includes reverse blocking diode to prevent battery discharge when input is removed

Battery Chargers Applications

• Portable consumer electronics requiring single-cell Li-Ion/Polymer power
• USB-powered devices needing compliant charge management
• Space-constrained embedded systems with cost-sensitive designs

Battery Chargers Procurement Notes

Verify the specific suffix MC indicates the 8-DFN package variant distinct from SOT-23 versions. Confirm the '3' designation matches the required 4.35 V output voltage for your battery chemistry. Ensure compatibility with your PCB footprint for the 2x3 mm exposed pad thermal design.

Battery Chargers Selection Notes

Select this component when a fixed 4.35 V charge voltage is required rather than standard 4.2 V. Choose the DFN package for superior thermal performance in compact layouts compared to SOT-23 alternatives. Verify that the 500 mA maximum current meets the target battery's specifications.

Battery Chargers Part Context

This part belongs to the MCP73831/2 family of advanced linear charge controllers. The MCP73831 variant features a status pin, while the MCP73832 includes an integrated LDO regulator. This specific model targets applications prioritizing small physical size and minimal external component count.

Battery Chargers Replacement Considerations

MCP73831T-3ACI/OT offers identical electrical characteristics but uses a SOT-23-5 package instead of DFN.