Overview
The STSPIN220 is a low-voltage stepper motor driver produced by STMicroelectronics. It is designed to integrate both control logic and a low RDS(on) power stage in a compact VFQFPN 3x3x1.0 mm package. This driver is optimized for battery-powered applications, featuring a high-efficiency design with low ON resistance MOSFETs and a microstepping sequencer that supports up to 256 microsteps. The STSPIN220 is ideal for applications requiring smooth and silent motor movements, along with robust protection features to ensure reliable operation.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 1.8V to 10V |
| Maximum Output Current | 1.3A rms |
| RDS(ON) HS + LS | 0.4 Ω typ. |
| Microstepping Resolution | Up to 1/256th of a step |
| Current Control | PWM with programmable off-time |
| Protection Features | Overcurrent, short-circuit, thermal shutdown |
| Standby Consumption |
Key Features
- Integrated current sensing and microstepping sequencer up to 256 microsteps
- High efficiency with low RDS(on) MOSFETs
- PWM current control with fixed OFF time
- Full protection set including overcurrent, short-circuit, and thermal shutdown
- Energy saving with standby consumption less than 80 nA
- Adjustable current limiting and selectable step size
- Simple motor control interface with DIR, STCK, RST, EN, and FAULT pins
Applications
The STSPIN220 is perfectly suited for various battery-powered stepper motor applications, including:
- Pop-up camera control for smartphones
- Point of sale (POS) devices
- Portable printers
- PC peripherals and accessories
- Robotics and mechatronics
- Toys and reflex cameras
Q & A
- What is the operating voltage range of the STSPIN220?
The operating voltage range of the STSPIN220 is from 1.8V to 10V.
- What is the maximum output current of the STSPIN220?
The maximum output current of the STSPIN220 is 1.3A rms.
- What is the microstepping resolution of the STSPIN220?
The STSPIN220 supports microstepping up to 1/256th of a step.
- What protection features does the STSPIN220 offer?
The STSPIN220 offers overcurrent, short-circuit, and thermal shutdown protection.
- How does the STSPIN220 manage power consumption in standby mode?
The STSPIN220 has a standby consumption of less than 80 nA, allowing for significant battery life extension.
- What is the typical application of the STSPIN220?
The STSPIN220 is typically used in battery-powered stepper motor applications such as portable printers, robotics, and toys.
- How is the step size selected on the STSPIN220?
The step size on the STSPIN220 is selected using the MODE1, MODE2, MODE3 (STCK), and MODE4 (DIR) pins.
- What is the purpose of the EN/FAULT pin on the STSPIN220?
The EN/FAULT pin acts as a chip enable when high and as an interrupt pin when a fault condition occurs, forcing it low.
- How does the STSPIN220 handle overcurrent and short-circuit protection?
The STSPIN220 embeds circuitry that protects against overcurrent and short-circuit conditions, disabling the power stage and asserting the EN/FAULT pin low when a fault occurs.
- What package type is the STSPIN220 available in?
The STSPIN220 is available in a VFQFPN 3x3x1.0 mm package.
