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LB1945H - PWM Current Control Type Stepping Motor Driver

General Description

Pin name Pin number VBB1 7 VBB2 24 E1 5 E2 23 OUTA 2 OUTA 1 OUTB 27 OUTB 28 GND 14 S GND 15 D

GND 6 22 CR 21 VREF1 VREF2 PHASE1 PHASE2 ENABLE1 ENABLE2 IA1, IA2 IB1, IB2 VCC 13 16 9 20 10 19 12, 11 17, 18 8 Function Output stage power supply voltage pin.

Key Features

  • PWM current control (external excitation).
  • Load current digital selection (1.
  • 2, W1.
  • 2, and 2 phase excitation drives possible).
  • Built-in upper/lower diode.
  • Simultaneous ON prevention function (feedthrough current prevention).
  • Built-in thermal shutdown circuit.
  • Built-in noise canceler Package Dimensions unit: mm 3233-HSOP28H [LB1945H] 15.3 28 15 0.65 0.25 6.2 2.7 1 0.85 0.8 0.3 14 2.5max 0.1 2.25 Specifications Absol.

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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 : ENN*6193 LB1945H Monolithic Digital IC LB1945H PWM Current Control Type Stepping Motor Driver Preliminary Features • PWM current control (external excitation) • Load current digital selection (1–2, W1–2, and 2 phase excitation drives possible) • Built-in upper/lower diode • Simultaneous ON prevention function (feedthrough current prevention) • Built-in thermal shutdown circuit • Built-in noise canceler Package Dimensions unit: mm 3233-HSOP28H [LB1945H] 15.3 28 15 0.65 0.25 6.2 2.7 1 0.85 0.8 0.3 14 2.5max 0.1 2.