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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. The digital control core can generate user defined motion profiles with acceleration, deceleration, speed or target position, easily programmed through a dedicated registers set.

Features

? Operating voltage: 8 - 45 V

? 7.0 A out peak current (3.0 A r.m.s.)

? Low R DS(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

Applications

? Bipolar stepper motors