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Ordering number : ENN6109A
Monolithic Digital IC
LB1987, 1987D, 1987M, 1987H
Three-Phase Brushless Motor Driver for VCR Capstan Motors
Overview
The LB1987, LB1987D, LB1987M, and LB1987H are optimal capstan motor drivers for use in VCR sets.
3147B-DIP28H
[LB1987D]
28 15
Functions
• Three-phase full-wave current-linear drive • Torque ripple correction circuit (fixed correction ratio) • Current limiter circuit with control characteristics gain switching • Oversaturation prevention circuits for both the upper and lower sides of the output stage (No external capacitors are required.) • FG amplifier • Thermal shutdown circuit
R1.7
12.7 11.2
8.4
1
20.0 27.0
14
1.93
1.78
0.6
1.0
4.0
4.0
SANYO: DIP28H
3129-MFP36S-LF
[LB1987M]
36 19
Package Dimensions
3240-QFP34H-B
15.3 2.25 2.
LB1987H Datasheet
