Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Package | WQFN-28-EP(5×5) |
| Interface | STEP/DIR |
| Output Current | 2A |
| On-resistance | 320mΩ |
| Step Resolution | 1;2;4;8;16 |
| Operating Temperature | -20℃~+85℃ |
| Drive Type | Bipolar Driver |
Product Overview
A4988SETTR-T is a Allegro MicroSystems motor driver identified by the exact orderable code A4988SETTR-T. Its confirmed technical identity includes Interface STEP/DIR, Output Current 2A, On-resistance 320mΩ, Step Resolution 1;2;4;8;16.
The exact device is described as: WQFN-28-EP(5×5) Motor Drivers, Controllers. Selection should be based on the exact package and the operating conditions required by the design, rather than on a nearby family member or a generic part number.
Technical Specifications
| Parameter | Value |
|---|---|
| Package | WQFN-28-EP(5×5) |
| Interface | STEP/DIR |
| Output Current | 2A |
| On-resistance | 320mΩ |
| Step Resolution | 1;2;4;8;16 |
| Operating Temperature | -20℃~+85℃ |
| Drive Type | Bipolar Driver |
| Number of H-bridges | 2 |
| Features | Motor step-out prevention function;Power-on reset;Overvoltage protection;Built-in charge pump;Overcurrent Protection;Short-Circuit Protection;Over temperature protection;Under-voltage lockout;Dead-time / shoot-through protection |
| Technology | Yes |
| Control Voltage | 3V~5.5V |
Selection Notes
- Package: WQFN-28-EP(5×5)
- Interface: STEP/DIR
- Output Current: 2A
- On-resistance: 320mΩ
- Step Resolution: 1;2;4;8;16
Application Fit
This exact part is appropriate for designs that require a motor driver with the confirmed package and electrical/function parameters above. Final fit depends on the surrounding circuit, interface, thermal and mechanical requirements of the target design.
Design Considerations
Check current, power dissipation and board thermal conditions at the intended operating point rather than using the headline rating alone.
Verify interface voltage levels, bus topology and timing/data-rate requirements against the rest of the system.
Size the gate-drive network and thermal path using the specified gate conditions and on-resistance test conditions for the exact device.
Use the exact WQFN-28-EP(5×5) footprint/package definition when checking PCB land pattern, assembly clearance and sourcing equivalence.
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
