DESCRIPTION
The M51970L is a semiconductor integrated circuit designed to control the motor rotating speed. Connection of the rotating speed detector (F-G detector) to the input keeps the motor rotating speed constant with high precision.
Connection of  an  appropriate power transistor to  the  output controls a wide range of DC motors.

FEATURES
●Wide range of supply voltage•••••••••••••2.5–18V(-20–+75˚C)
●Variation coefficient of supply voltage• • • • • • • • • • •  ±0.1% standard (4 – 15V)
●Load variation coefficient ••••••••••••••••••••••••••±0.1%standard
●Temperature coefficient of rotating speed• • • • • • • • • • • • • •  ±10 ppm/˚C (standard) (-20 – +75˚C)
●The built-in over-shoot prevention circuit keeps the over-shoot low.
●DC drive system with minimum RFI

APPLICATION
Motor rotating control in the player, tape recorder, etc.