MCP73831T-2ACI-MC – Battery Charger IC – Microchip – 2X3 DFN

The MCP73831T-2ACI-MC – Battery Charger IC is a highly advanced linear charge management controller IC designed by Microchip, optimized for Lithium-Ion and Lithium-Polymer battery charging applications. It features an integrated pass transistor, current sensing, and reverse discharge protection, making it ideal for compact, cost-sensitive designs. With high-accuracy preset voltage regulation and programmable charge current, this IC offers flexibility and precision for a wide range of portable devices.

The MCP73831T-2ACI-MC employs a constant-current/constant-voltage charge algorithm with selectable preconditioning and charge termination, ensuring safe and efficient charging. It supports USB charging specifications and includes thermal regulation for optimized performance under high power or ambient conditions. Available in a compact 2×3 mm DFN package, this IC is perfect for space-limited applications.

Features:

• Fixed voltage regulation at 4.20V for Lithium-Ion/Lithium-Polymer batteries.
• Integrated pass transistor and current sensing for streamlined design.
• Reverse discharge protection ensures battery safety.
• Configurable charging parameters:
  • Preconditioning current set to 10% of constant current.
  • Preconditioning voltage threshold at 66.5% of regulation voltage.
  • Termination current configurable to 7.5% of constant current.
  • Recharge voltage threshold set to 96.5% of regulation voltage.
• Tri-state charge status output for real-time monitoring.
• Thermal regulation optimizes charging in high-temperature conditions.
• Compact 2×3 mm DFN package for space-constrained designs.
• Supports charging currents programmable from 15 mA to 500 mA.