MITSUBISHI
M51971L/FP
MOTOR SPEED CONTROL
DESCRIPTION
The M51971 is a semiconductor integrated circuit designed to control the motor rotating speed. The built-in FG amplifier with high gain enables to use a wide range of rotating speed detector (FG detector). Use of less external parts enables DC motors to be controlled with high precision.
PIN CONFIGURATION (TOP VIEW)
Non-inverted input Inverted input Amplifier output
1 2 3 4
FEATURES
q Wide range of supply voltage • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 4 – 17. 5V q Variation coefficient of supply voltage • • • • • ±0. 005%/V (standard) q Load variation coefficient • • • • • ±0. 01% (standard, full load range) q Temperature coefficient of rotating speed • • • • 7ppm/˚C (standard) q Built-in high performance FG amplifier
Schmitt input Time constant Stabilized voltage GND Integration capacitance Output
M51971L
5 6 7 8 9
APPLICATION
Motor rotating speed control in floppy disk driver, player...
M51971FP PDF File
