MCP16311T-E/MSVAO MCP16312-E/MS MCP16312-E/MS 电源IC MCP16312-E/MSVAO MCP16312T-E/MNY MCP16312T-E/MS MCP16312T-E/MSVAO MCP1631-E/ML MCP1631-E/SS MCP1631-E/ST