L6474 - STMicroelectronics

L6474 Fully integrated microstepping motor driver

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 m.

Features

 Operating voltage: 8 - 45 V
 7.0 A output peak current (3.0 A r.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 Description 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 circui.