L6474 Series

Stepper motor driver with up to 16 microsteps with SPI and advanced current control

Catalog

Stepper motor driver with up to 16 microsteps with SPI and advanced current control

Part	Package Width	Package Name	Package Features	Package Length	Motor Type - Stepper	Function	Step Resolution (Min)	Step Resolution (Max)	Interface	Applications	Half-Bridge Count	Output Configuration	Voltage - Load (Max)	Voltage - Load (Min)	Current - Output	Mounting Type	Operating Temperature (Min)	Operating Temperature (Max)	Voltage - Supply	Voltage - Supply	Technology
STMicroelectronics L6474HTR	4.4 mm	28-HTSSOP 28-TSSOP	Exposed Pad	0.173 in	Bipolar	Control and Power Stage Driver - Fully Integrated	0.0625	1	SPI	General Purpose	4	Half Bridge	45 V	8 V	3 A	Surface Mount	-40 °C	150 °C	3.3 V 5 VDC	3.3V 5V	DMOS
STMicroelectronics L6474PDTR	11 mm	36-PowerBSSOP PowerSO-36 Slug Up		0.433 in	Bipolar	Control and Power Stage Driver - Fully Integrated	0.0625	1	SPI	General Purpose	4	Half Bridge	45 V	8 V	3 A	Surface Mount	-40 °C	150 °C	3.3 V 5 VDC	3.3V 5V	DMOS
STMicroelectronics L6474H	4.4 mm	28-HTSSOP 28-TSSOP	Exposed Pad	0.173 in	Bipolar	Control and Power Stage Driver - Fully Integrated	0.0625	1	SPI	General Purpose	4	Half Bridge	45 V	8 V	3 A	Surface Mount	-40 °C	150 °C	3.3 V 5 VDC	3.3V 5V	DMOS
STMicroelectronics L6474PD	11 mm	36-PowerBSSOP PowerSO-36 Slug Up		0.433 in	Bipolar	Control and Power Stage Driver - Fully Integrated	0.0625	1	SPI	General Purpose	4	Half Bridge	45 V	8 V	3 A	Surface Mount	-40 °C	150 °C	3.3 V 5 VDC	3.3V 5V	DMOS

Catalog

Stepper motor driver with up to 16 microsteps with SPI and advanced current control

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 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.