A3982SLBTR-T vs A4973SLBTR-T Comparison
Detailed side-by-side comparison of A3982SLBTR-T by Allegro MicroSystems and A4973SLBTR-T by Allegro MicroSystems. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Allegro MicroSystems
A3982SLBTR-T - 35V/±2A DMOS Stepper Motor Driver | Allegro
A3982SLBTR-T ✓ ActiveAllegro MicroSystems
A4973SLBTR-T - 1.5A Full-Bridge PWM Motor Driver | Allegro
A4973SLBTR-T ✓ ActiveSpecification Comparison
| Parameter | A3982SLBTR-T | A4973SLBTR-T |
|---|---|---|
| Brand | Allegro MicroSystems | Allegro MicroSystems |
| Category | Motor Drivers | Motor Drivers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.63 | $3.71 |
| Motor Type | Bipolar stepper | Brushed DC |
| Number of Outputs | 4 (dual full bridge) | 2 (half-bridge pair forming 1 full bridge) |
| Output Configuration | Dual full H-bridge | Full-Bridge (H-Bridge), 1 bridge |
| Logic Supply Voltage | 3 V to 5.5 V | — |
| Motor Supply Voltage (Load) | 8 V to 35 V | — |
| Continuous Output Current | ±2 A per phase | ±1.5 A |
| RDS(on) (typical) | 370 mOhm | — |
| Step Modes | Full-step, Half-step | — |
| Current Decay Modes | Slow, Mixed, Fast (auto-detected) | — |
| Current Regulation | Fixed off-time PWM | — |
| Built-in Translator | Yes (STEP/DIR input) | — |
| Operating Temperature | -20 C to +85 C | -20 C to +85 C |
| Package | SOIC-24 (SLB) with exposed thermal pad | 16-pin SOIC Wide Body (SLB) with exposed thermal pad |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant | Compliant |
| Load Supply Voltage (VBB) | — | 5 V to 50 V |
| Logic Supply Voltage (VCC) | — | 3 V to 5.5 V |
| Current Control | — | Internal fixed off-time PWM with 3-bit DAC setpoint |
| Current-Decay Modes | — | Fast and slow decay, user-selectable |
| Sleep Mode | — | Yes (low quiescent current) |
| Protection Features | — | Thermal shutdown, crossover-current protection |
| MSL Level | — | [DATA_NEEDED: MSL level] |