A3973SLB-T
IC MTR DRV BIPLR 4.5-5.5V 24SOICManufacturer: Allegro MicroSystems
Categories: Motor Drivers, Controllers
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Allegro MicroSystems A3973SLB-T is a fully integrated bipolar stepper motor driver IC. This DMOS device offers a serial interface for control and features four independent half-bridge output configurations. Designed for robust operation, it handles load supply voltages from 15V to 35V, with a logic supply range of 4.5V to 5.5V. The A3973SLB-T provides settable mixed decay and slow current-decay modes for precise motor control and reduced audible noise, supporting step resolutions from full step to 1/64 microstepping. Its surface mountable 24-SOIC package (0.295" width) is suitable for demanding applications across industrial and consumer electronics. The device operates within an ambient temperature range of -20°C to 150°C (TJ).
Additional Information
Series: -RoHS Status: ROHS3 CompliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: TubeDownload Free CAD Model:
Technical Details:
| Packaging | Tube |
| Package / Case | 24-SOIC (0.295"", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Function | Driver - Fully Integrated, Control and Power Stage |
| Current - Output | 1A |
| Interface | Serial |
| Operating Temperature | -20°C ~ 150°C (TJ) |
| Output Configuration | Half Bridge (4) |
| Voltage - Supply | 4.5V ~ 5.5V |
| Applications | General Purpose |
| Technology | DMOS |
| Voltage - Load | 15V ~ 35V |
| Supplier Device Package | 24-SOIC |
| Motor Type - Stepper | Bipolar |
| Motor Type - AC, DC | - |
| Step Resolution | 1 ~ 1/64 |
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