Motor Drivers, Stepper | LB11847

PWM 电流控制型步进电机驱动器

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LB11847 是一款用于带 PWM 电流控制双极驱动（固定关断时间）的步进电机的驱动器集成电路。 该集成电路的特殊功能为 VREF 电压恒定，电流可以 15 个步进进行设置，可实现从 1-2 相励磁型到 4W 1-2 相励磁型电机的驱动。 还可以选择电流衰减模式（慢速衰减、快速衰减、混合衰减），以便在斩波关断时衰减再生电流，因此改善响应特性。 这对于要求高精度控制和低振动的打印机和类似应用中的纸盒和送纸步进电机尤其有用。

  • Printers
  • PWM current control (fixed OFF time)
  • Load current digital selector
  • Selectable current decay
  • Simultaneous ON prevention function
  • Noise canceller
  • Built-in thermal shutdown circuit
  • Built-in logic low-voltage OFF circuit

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