The Wenrun LSD039BUE-101C-03 is a microcontroller unit (MCU) integrated circuit (IC) manufactured by Wenrun. It is a 3-Phase Brushless DC Motor Control and Speed Feedback System designed for use in a wide range of appliances such as desktop copiers, printers, household electrical appliances and electronic fans. This IC is also suitable for motor application including industrial sewing machines, medical gas saws and surgical scissors. The IC integrates a 3-Phase Brushless DC Motor Driver and Speed Feedback System into one package, complete with system self-check and constant current control. It can operate from -40 degree to 125 degree Celsius, and has over-voltage and over-temperature protection. The IC is Lead Free, RoHS Compliant and Halogen Free.