Features and Functions

• Protection against motor lock and automatic return can be provided with a minimum number of external parts.

• The LB1663, LB1663M, LB1666 can be operated from either 12 V or 24 V power supply by changing an external resistor.

• Possible to connect a Hall element direct to the LB1663, LB1663M, LB1666.

• Built-in output transistors with output current 1.5 A.

• Built-in rotation detect function (Drive mode: ‘‘L’’, Stop mode: ‘‘H’’)

• Built-in thermal shutdown

• With radio noise reduction pin

Applications

2-Phase unipolar brushless motor (ex. DC brushless fan motor) drivers