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LB1981 - Three-Phase Brushless Motor Driver

Description

Pin number Pin name STBY 3 Pin voltage VCC1 max

Pin function When this pin is at 0.7V or less or when it is open, only the FG/PG amplifier operates.

In the motor drive state, the pin should be at 2V or higher.

Features

  • Three-phase full-wave drive brushless sensorless motor drive.
  • Soft switching drive.
  • Power-saving speed control function due to motor voltage.
  • Use with 3V power supply possible.
  • Output residual voltage can be set in 4 ways.
  • Forward/reverse switching possible.
  • Built-in standby function (FG and PG amplifier only remain operative).
  • Built-in braking circuit.
  • Built-in thermal shutdown circuit.
  • Built-in FG and PG.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Ordering number : ENN5917 LB1981V Monolithic Digital IC LB1981V Three-Phase Brushless Motor Driver Overview The LB1981V is a three-phase brushless motor driver especially suited for use mainly with drum motors of portable VCRs. Package Dimensions unit: mm 3191-SSOP30 30 16 Features • Three-phase full-wave drive brushless sensorless motor drive • Soft switching drive • Power-saving speed control function due to motor voltage • Use with 3V power supply possible • Output residual voltage can be set in 4 ways • Forward/reverse switching possible • Built-in standby function (FG and PG amplifier only remain operative) • Built-in braking circuit • Built-in thermal shutdown circuit • Built-in FG and PG amplifiers • Built-in saturation prevention amplifier and midpoint control circuit 5.6 7.
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