Overview
The L6474PDTR, produced by STMicroelectronics, is a high-performance stepper motor driver integrated in analog mixed signal technology. It features a dual low RDS(on) DMOS full bridge with all power switches, equipped with accurate on-chip current sensing circuitry. This device is designed for non-dissipative current control and includes robust overcurrent protections, making it suitable for demanding motor control applications.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 8 - 45 V |
| Output Peak Current | 7.0 A (3.0 A r.m.s.) |
| Power MOSFETs | Low RDS(on) |
| Microstepping | Up to 1/16 |
| Current Control | Adaptive decay mode |
| Interface | SPI (5 Mbit/s) |
| Quiescent and Standby Currents | Low |
| Overcurrent Protection | Programmable non-dissipative overcurrent protection |
| Thermal Protection | Two-level overtemperature protection |
| Package | PowerSO 36 |
| Grade | Industrial |
| RoHS Compliance | Ecopack2 |
| Operating Temperature | -40°C to 150°C |
Key Features
- Programmable power MOS slew rate, deadtime, and blanking-time
- Integrated analog to digital converter for torque regulation or user-defined applications
- Internal voltage regulator generating a 3 V voltage from the motor power supply
- SPI interface for synchronous serial communication
- Low quiescent and standby currents
- Programmable non-dissipative overcurrent protection on all power MOSFETs
- Two-level overtemperature protection
- SYNC pin for synchronization signal
- FLAG pin for alarm conditions
Applications
The L6474PDTR is suitable for a variety of demanding motor control applications, including industrial automation, 3D printing, and other precision motor control systems. Its robust protection features and high-performance current control make it an ideal choice for applications requiring precise and reliable motor operation.
Q & A
- What is the operating voltage range of the L6474PDTR?
The operating voltage range is 8 - 45 V. - What is the maximum output peak current of the L6474PDTR?
The maximum output peak current is 7.0 A (3.0 A r.m.s.). - Does the L6474PDTR support microstepping?
Yes, it supports up to 1/16 microstepping. - What type of interface does the L6474PDTR use for communication?
The L6474PDTR uses a standard 5 Mbit/s SPI interface. - What are the key protection features of the L6474PDTR?
The key protection features include programmable non-dissipative overcurrent protection, two-level overtemperature protection, and undervoltage lockout (UVLO). - How is the current control managed in the L6474PDTR?
The current control is managed through an adaptive decay mode with peak current control and automatic selection of the best decay mode. - Can the L6474PDTR be used in high-temperature environments?
Yes, it has an operating temperature range of -40°C to 150°C. - What is the purpose of the SYNC pin on the L6474PDTR?
The SYNC pin works as a synchronization signal, echoing one of the bits of the EL_POS register. - How does the FLAG pin function on the L6474PDTR?
The FLAG pin is pulled low by an internal open drain transistor when certain alarm conditions occur. - Is the L6474PDTR RoHS compliant?
Yes, the L6474PDTR is RoHS compliant with an Ecopack2 grade.
