Overview
The STSPIN820 is a advanced stepper motor driver integrated by STMicroelectronics. It combines both control logic and a low RDSon power stage within a compact QFN 4 x 4 mm package. The device features a PWM current control with fixed OFF time and supports microstepping resolutions up to 1/256th of a step. It also includes a comprehensive set of protection features such as overcurrent, overtemperature, and short-circuit protection. The STSPIN820 can be forced into a low consumption state, making it energy-efficient in standby mode.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage | 7 to 45 | V |
| Maximum Output Current | 1.5 | Arms |
| RDSon (HS + LS) | 1 | Ω (typ.) |
| Microstepping Resolution | Up to 1/256th of a step | |
| Current Control | PWM with programmable OFF time | |
| Current Sensing | Based on external shunt resistor | |
| Package Type | TFQFPN 24L 4x4x1.05 | |
| Operating Temperature | -40 to 150 | °C |
Key Features
- Operating voltage range from 7 to 45 V
- Maximum output current of 1.5 Arms
- Low RDSon power stage with RDSon (HS + LS) = 1 Ω (typ.)
- Microstepping up to 1/256th of a step
- PWM current control with programmable OFF time
- Current sensing based on external shunt resistor
- Full protection set including overcurrent, overtemperature, and short-circuit protection
- Non-dissipative overcurrent protection
- Undervoltage lockout and thermal shutdown
- Standby low consumption mode
Applications
- 3D printers
- Medical equipment
- Industrial 2D printers
- Textile and sewing machines
- CCTV, security, and dome cameras
- ATM and cash handling machines
- Office and home automation
- POS systems
- Robotics
Q & A
- What is the operating voltage range of the STSPIN820?
The operating voltage range of the STSPIN820 is from 7 to 45 V.
- What is the maximum output current of the STSPIN820?
The maximum output current of the STSPIN820 is 1.5 Arms.
- What is the microstepping resolution of the STSPIN820?
The STSPIN820 supports microstepping up to 1/256th of a step.
- What kind of current control does the STSPIN820 implement?
The STSPIN820 implements PWM current control with programmable OFF time.
- How does the STSPIN820 sense current?
The STSPIN820 senses current based on an external shunt resistor.
- What protection features does the STSPIN820 offer?
The STSPIN820 offers a full protection set including overcurrent, overtemperature, and short-circuit protection, as well as undervoltage lockout and thermal shutdown.
- Can the STSPIN820 be put into a low consumption state?
Yes, the STSPIN820 can be forced into a low consumption state by setting the STBY/RESET input below the VSTBYL threshold.
- What is the package type of the STSPIN820?
The STSPIN820 comes in a TFQFPN 24L 4x4x1.05 package.
- What are some common applications of the STSPIN820?
The STSPIN820 is commonly used in 3D printers, medical equipment, industrial 2D printers, textile and sewing machines, CCTV and security cameras, ATM and cash handling machines, office and home automation, POS systems, and robotics.
- How does the STSPIN820 handle overcurrent conditions?
The STSPIN820 features non-dissipative overcurrent protection to handle overcurrent conditions safely.
