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L6470 Datasheet Fully integrated microstepping motor driver

Manufacturer: STMicroelectronics

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General Description

The L6470 device, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping.

It integrates a dual low RDS(on) DMOS full bridge with all of the power switches equipped with an accurate onchip current sensing circuitry suitable for nondissipative current control and overcurrent protection.

Thanks to a unique control system, a true 1/128 steps resolution is achieved.

Overview

L6470 Fully integrated microstepping motor driver with motion engine and SPI Datasheet - production data Applications  Bipolar stepper motors POWERSO36.

Key Features

  • Operating voltage: 8 - 45 V.
  • 7.0 A out peak current (3.0 A r. m. s. ).
  • Low RDS(on) Power MOSFETs.
  • Programmable speed profile and positioning.
  • Programmable power MOS slew rate.
  • Up to 1/128 microstepping.
  • Sensorless stall detection.
  • SPI interface.
  • Low quiescent and standby currents.
  • Programmable non-dissipative overcurrent protection on high and low-side.
  • Two-levels of overtemperature protection.

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