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L99SM81V Datasheet Programmable Stepper Motor Driver

Manufacturer: STMicroelectronics

Overview: L99SM81V Programmable stepper motor driver for automotive applications with micro-stepping and stall detection Datasheet - Production.

General Description

The L99SM81V is an automotive grade integrated driver for bipolar two-phase stepper motors capable of current controlled microstepping with programmable amplitude.

The device

Key Features

  • AEC-Q100 qualified.
  • Stepper motor driver with up to 1.35 A current capability.
  • Programmable Step mode:  Full step, Half step, Mini step, 1/8 Micro step, 1/16 Micro step.
  • Current regulation by integrated PWM control with fully integrated current sensing.
  • Equivalent 10 bit resolution on current regulation loop:  Two 4-bit programmable full scale current amplitudes: one for RUN and one for HOLD mode  6-bit DAC for reference current generation (whatever programmed full s.

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L99SM81V Distributor