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Description
TRINAMIC TMC249A-SA Stepper Motor Driver, 3V to 5.5V supply, 34V/50 mA/8 Outputs, SOIC-28The TMC249A SA is a smart high current Micro Stepping Driver for bi polar stepper motors. The integrated unique sensorless stall detection stallGuard makes it a good choice for applications, where a reference point is needed, but where a switch cannot be used. The ability to predict an overload makes this an optimum choice for drives, where a high reliability is desired. It provides an SPI interface as well as the classical analogue digital control. A
The TMC249A-SA is a smart high current Micro Stepping Driver for bi-polar stepper motors. The integrated unique sensorless stall detection stallGuard� makes it a good choice for applications, where a reference point is needed, but where a switch cannot be used. The ability to predict an overload makes this an optimum choice for drives, where a high reliability is desired. It provides an SPI� interface as well as the classical analogue/digital control. A full set of protection and diagnostic features makes this device very rugged. It directly drives external MOSFETs for currents up to 6A. This way it reaches an extremely high efficiency and allows driving of a high motor current without cooling measures even at high environment temperatures. The high motor current makes this device ideal for miniaturized highly dynamic and high torque drive systems.
- SPI interface
- Stepper supported motor
Applications
Motor Drive & Control
Product details
| Motor Type | Stepper |
| Operating Temperature Min | -40�C |
| Output Current | 50mA |
| No. of Outputs | 8Outputs |
| Driver Case Style | SOIC |
| Operating Temperature Max | 125�C |
| No. of Pins | 28Pins |
| Output Voltage | 34V |
| Product Range | - |
| Automotive Qualification Standard | - |
| Supply Voltage Min | 3V |
| Packaging | Each |
| Supply Voltage Max | 5.5V |
| MSL | MSL 2 - 1 year |
Other details
| Brand | TRINAMIC |
| Part Number | TMC249A-SA |
| Quantity | Each |
| Technical Data Sheet EN |
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Exchange/Return Notes
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4.6 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Beautiful shelves!
Size: 48 Inch, Color: Natural, Size: 48 Inch, Color: Natural
Since new build homes typically don't come with towel rods this was what I envisioned instead. I purchased the hooks separately. The shelves are perfect! I ordered a 36in set as you see with the cream towels and a 48in set that you see with the green towels. They're not loose but not 100% sturdy. I recommend maybe gluing to the wall in addition to the rest and definitely screwing into a stud. They're easy enough to figure out without the instructions. But I will say they're supposed to be screwed in underneath to the rods but they did not come with an appropriate screw for that so I had to use some I already had on hand.
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Reviewed in the United States on May 20, 2025
★★★★★ 5
Nice
Size: 30 Inch, Color: Natural, Size: 30 Inch, Color: Natural
Easy to install..comes with small magnetic leveler which made things even easier! Really nice for the price.
Only thing is other than sliding the wood onto the metal brace, there’s only 2 screws that screw wood onto brace so it makes for a slightly wobbly shelf on the brace… although I have 6 screws/anchors holding each brace into the wall so it’s technically quite solid…I’m a bit nervous to keep delicates on the shelves
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Reviewed in the United States on February 16, 2025
★★★★★ 5
Great Shelves! Drywall Anchors are the Bomb!
These shelves are very plain as I hoped they would be so as to not take away from the items displayed. The blue is true to the images so I was impressed by that. Word of knowledge: if you do not hit any studs, don’t use the mollies that came with them; use plastic drywall anchors! They work amazingly well!
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Pretty shelves for small space
Size: 17 Inch, Color: Natural
Good quality shelves and easy to install once I used my own stronger anchors and screws. The ones provided were too weak and made the shelf unstable. I had to patch several holes in my wall before installing them correctly. If they had provided better quality anchors I would have rated it 5 stars. Still very happy with my purchase.
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Reviewed in the United States on July 12, 2025
★★★★★ 1
Flimsy and doesn’t hold weight
Size: 17 Inch, Color: Natural, Size: 17 Inch, Color: Natural
Do not buy this. The frame this comes with is so small and flimsy. I didn’t even have anything on the shelves yet and they were falling off the wall. The wood is a beautiful color but the quality is awful.
I had different floating shelves on the same wall and I included a picture of the thick metal frame those came with, also from Amazon to show how flimsy this brand is.
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Reviewed in the United States on March 24, 2026
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