L6474PD

L6474PD is a 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. Due 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 analog 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.

• Operating voltage range from 8 to 45V
• 7A output peak current (3.0A r.m.s.)
• Low RDS(on) power MOSFETs
• Programmable power MOS slew rate
• Current control with adaptive decay
• Non-dissipative current sensing
• Low quiescent and standby currents
• Programmable non-dissipative overcurrent protection on all power MOS
• Two-level overtemperature protection
• Available in 36 pin PowerSOIC package