LB1999 Sanyo, LB1999 Datasheet
LB1999
Related parts for LB1999
LB1999 Summary of contents
Page 1
... Ordering number : EN5975 Overview The LB1999M is a 3-phase brushless motor driver that is particularly appropriate for VCR capstan motor drivers. Functions · 3-phase full-wave drive · Built-in torque ripple correction circuit (fixed correction ratio) · Built-in current limiter circuit and control characteristics that include gain switching · ...
Page 2
... FG amplifier input bias current FG amplifier output saturation voltage FG bias voltage FG amplifier common-mode input voltage Notes : 1. The torque ripple correction ratio is determined as follows from the Rf voltage waveform. 2. Parameters that are indicated as design target values in the conditions column are not tested. LB1999M Symbol Conditions V max CC ...
Page 3
... Phase Phase U Phase V Note: Since the drive technique adopted is a 180° technique, phases other than the sink and source phase do not turn off. LB1999M Symbol Conditions The voltages between each OUT and = 10 mA 0.5 Ω, and V sat (DET) Rf pair when I ...
Page 4
... Logic high is defined as states where IN + > IN – Power supply for all internal blocks other than the output V 16 block. This voltage must be stabilized so that noise and ripple CC do not enter the IC. LB1999M Control Limiter Characteristics Function OUT Slope: 0.50 A/V (typical) Equivalent circuit Continued on next page. No. 5975-4/8 ...
Page 5
... Pin Assignment Note: Although the FRAME pins and the GND pins are not connected internally, the potentials of the GND pins and the FRAME pins externally be identical to assure ground potential stability. LB1999M Function (Spark killer diodes are built-in (typical)) Equivalent circuit No. 5975-5/8 ...
Page 6
... Block Diagram distribution differential and conversion Antilogarithm block compression logarithmic output Synthesized matrix) (linear block synthesis input LB1999M Hall No. 5975-6/8 ...
Page 7
... Sample Application Circuit LB1999M No. 5975-7/8 ...
Page 8
... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of October, 1998. Specifications and information herein are subject to change without notice. LB1999M No. 5975-8/8 ...