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L9942 - Integrated stepper motor driver

General Description

The L9942 is an integrated stepper motor driver for bipolar stepper motors with microstepping and programmable current profile look-up-table to allow a flexible adaptation of the stepper motor characteristics and intended operating conditions.

Key Features

  • Two full bridges for max. 1.3 A load (RDSON = 500 m).
  • Programmable current waveform with look-up table: 9 entries with 5 bit resolution.
  • Current regulation by integrated PWM controller and internal current sensing.
  • Programmable stepping mode: full, half, mini and microstepping.
  • Programmable slew rate for EMC and power dissipation optimization.
  • Programmable Fast-, Slow-, Mixed- and AutoDecay Mode.
  • Full-scale current programmable with 3 bit resolution.
  • Pro.

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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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L9942 Integrated stepper motor driver for bipolar stepper motors with microstepping and programmable current profile Features ■ Two full bridges for max. 1.3 A load (RDSON = 500 m) ■ Programmable current waveform with look-up table: 9 entries with 5 bit resolution ■ Current regulation by integrated PWM controller and internal current sensing ■ Programmable stepping mode: full, half, mini and microstepping ■ Programmable slew rate for EMC and power dissipation optimization ■ Programmable Fast-, Slow-, Mixed- and AutoDecay Mode ■ Full-scale current programmable with 3 bit resolution ■ Programmable stall detection ■ Step clock input for reduced µController requirements ■ Very low current consumption in standby mode IS < 3 µA, typ.