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LB11690 - Pre-Driver IC for Brushless Motor Drive in Electric Bicycles

Features

  • Three-phase bipolar PWM drive (high and low side n-channel FET drive).
  • Maximum supply voltage: 45 V.
  • Gate drive voltage: about 10 V (high and low side n-channel FETs).
  • Hall sensor signal F/V conversion circuit (one-shot multivibrator output).
  • Synthesized three-phase Hall sensor signal output.
  • Built-in current limiter and undervoltage protection circuits 0.51min 0.48 1.78 (1.04) SANYO: DIP30SD (400 mil) 3235A-HSOP36 [LB11690H] 0.65 17.8.

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Full PDF Text Transcription

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Ordering number : ENN7543 www.DataSheet4U.com Monolithic digital IC LB11690, 11690H Pre-Driver IC for Brushless Motor Drive in Electric Bicycles Overview The LB11690 and LB11690H are three-phase bipolar PWM drive pre-driver ICs that allow the output circuits to be implemented using only n-channel FETs. These ICs can implement, at low cost, high-efficiency drive circuits in applications that use motors that require high drive currents. These ICs include a built-in Hall sensor signal F/V conversion circuit and can provide a voltage that is proportional to motor speed for use, for example, in speedometers for electric bicycles. These ICs also support use in applications that holds the speed controlled at a constant rate as the load varies.
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