L6474 Datasheet PDF - ST Microelectronics

The L6474 device, realized in analog mixed signal technology, integrates a dual low RDS(on)DMOS full bridge with all power switches equipped with an accurate on-chip current sensing circuitry suitable for non-dissipative current control and overcurrent protections. Thanks to a new current control, a 1/16 microstepping is achieved through an adaptive decay mode which outperforms traditional implementations.

●All data registers, including those used to set analogue values (i.e.: current control value, current protection trip point, deadtime, etc.) are sent through a standard 5 Mbit/s SPI.

●A very rich set of protections (thermal, low bus voltage, overcurrent) makes the L6474 device “bullet proof” as required by the most demanding motor control applications.

●Key Features

● Operating voltage: 8 - 45 V

● 7.0 A output peak current (3.0 Ar.m.s. )

● Low RDS(on) power MOSFETs

● Programmable power MOS slew rate

● Up to 1/16 microstepping

● Current control with adaptive decay

● Non-dissipative current sensing

● SPI interface

● Low quiescent and standby currents

● Programmable non-dissipative overcurrent protection on all power MOS

● Two-level overtemperature protection