L6474 Series
Stepper motor driver with up to 16 microsteps with SPI and advanced current control
Manufacturer: STMicroelectronics
Catalog
Stepper motor driver with up to 16 microsteps with SPI and advanced current control
| Part | Package / Case | Supplier Device Package | Motor Type - Stepper | Function | Step Resolution [Min] | Step Resolution [Max] | Interface | Applications | Output Configuration | Voltage - Load [Max] | Voltage - Load [Min] | Current - Output | Mounting Type | Operating Temperature [Min] | Operating Temperature [Max] | Voltage - Supply | Technology | Package / Case [y] | Package / Case [x] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 STMicroelectronics | 28-TSSOP (0.173" 4.40mm Width) Exposed Pad | 28-HTSSOP | Bipolar | Driver - Fully Integrated Control and Power Stage | 1 | 0.0625 | SPI | General Purpose | Half Bridge (4) | 45 V | 8 V | 3 A | Surface Mount | -40 °C | 150 °C | 3.3 V 5 VDC | DMOS | ||
 STMicroelectronics | 36-PowerBSSOP | PowerSO-36 Slug Up | Bipolar | Driver - Fully Integrated Control and Power Stage | 1 | 0.0625 | SPI | General Purpose | Half Bridge (4) | 45 V | 8 V | 3 A | Surface Mount | -40 °C | 150 °C | 3.3 V 5 VDC | DMOS | 11 mm | 0.433 " |
STMicroelectronics | 28-TSSOP (0.173" 4.40mm Width) Exposed Pad | 28-HTSSOP | Bipolar | Driver - Fully Integrated Control and Power Stage | 1 | 0.0625 | SPI | General Purpose | Half Bridge (4) | 45 V | 8 V | 3 A | Surface Mount | -40 °C | 150 °C | 3.3 V 5 VDC | DMOS | ||
STMicroelectronics | 36-PowerBSSOP | PowerSO-36 Slug Up | Bipolar | Driver - Fully Integrated Control and Power Stage | 1 | 0.0625 | SPI | General Purpose | Half Bridge (4) | 45 V | 8 V | 3 A | Surface Mount | -40 °C | 150 °C | 3.3 V 5 VDC | DMOS | 11 mm | 0.433 " |
Description
AI
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.