MCP73811T-420I/OT IC-73811 LI-ION/LI-POLY CONTROLLER SOT23-5 The MCP73811T-420I/OT is a high-quality product offering IC-73811 LI-ION/LI-POLY CONTROLLER SOT23-5. With a shrink ratio of N/A and -40°C~+85°C operating temperature, it provides reliability in various applications.