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| PartNumber | A3977SLPTR-T | A3977SLPT | A3977SLPTR |
| Description | DMOS Stepper Motor Driver 5V 28-Pin TSSOP EP T/R | IC MTR DRV BIPOLR 3-5.5V 28TSSOP | |
| Manufacturer | ALLEGRO | ALLEGRO | - |
| Product Category | PMIC - Motor Drivers, Controllers | PMIC - Motor Drivers, Controllers | - |
| Series | - | - | - |
| Packaging | Digi-ReelR Alternate Packaging | - | - |
| Package Case | 28-TSSOP (0.173", 4.40mm Width) Exposed Pad | - | - |
| Technology | DMOS | - | - |
| Operating Temperature | -20°C ~ 150°C (TJ) | - | - |
| Mounting Type | Surface Mount | - | - |
| Function | Driver - Fully Integrated, Control and Power Stage | - | - |
| Applications | General Purpose | - | - |
| Interface | Step/Direction | - | - |
| Voltage Supply | 3 V ~ 5.5 V | - | - |
| Supplier Device Package | 28-TSSOP-EP | - | - |
| Current Output | 2.5A | - | - |
| Output Configuration | Half Bridge (4) | - | - |
| Voltage Load | 8 V ~ 35 V | - | - |
| Motor Type Stepper | Bipolar | - | - |
| Motor Type AC DC | - | - | - |
| Step Resolution | 1, 1/2, 1/4, 1/8 | - | - |