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| PartNumber | A3977KEDT | A3977KEDTR-T | A3977KEDTR |
| Description | IC MTR DRVR BIPOLR 3-5.5V 44PLCC | IC MTR DRVR BIPOLR 3-5.5V 44PLCC | |
| Manufacturer | - | Allegro MicroSystems, LLC | Allegro MicroSystems, LLC |
| Product Category | - | PMIC - Motor Drivers, Controllers | PMIC - Motor Drivers, Controllers |
| Series | - | - | - |
| Packaging | - | Digi-ReelR | Tape & Reel (TR) |
| Package Case | - | 44-LCC (J-Lead) | 44-LCC (J-Lead) |
| Technology | - | DMOS | DMOS |
| Operating Temperature | - | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) |
| Mounting Type | - | Surface Mount | Surface Mount |
| Function | - | Driver - Fully Integrated, Control and Power Stage | Driver - Fully Integrated, Control and Power Stage |
| Applications | - | General Purpose | General Purpose |
| Interface | - | Step/Direction | Step/Direction |
| Voltage Supply | - | 3 V ~ 5.5 V | 3 V ~ 5.5 V |
| Supplier Device Package | - | 44-PLCC (16.59x16.59) | 44-PLCC (16.59x16.59) |
| Current Output | - | 2.5A | 2.5A |
| Output Configuration | - | Half Bridge (4) | Half Bridge (4) |
| Voltage Load | - | 8 V ~ 35 V | 8 V ~ 35 V |
| Motor Type Stepper | - | Bipolar | Bipolar |
| Motor Type AC DC | - | - | - |
| Step Resolution | - | 1, 1/2, 1/4, 1/8 | 1, 1/2, 1/4, 1/8 |