A4973SLBTR-T vs A3982SLBTR-T Comparison
Detailed side-by-side comparison of A4973SLBTR-T by Allegro MicroSystems and A3982SLBTR-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
A4973SLBTR-T - 1.5A Full-Bridge PWM Motor Driver | Allegro
A4973SLBTR-T ✓ ActiveAllegro MicroSystems
A3982SLBTR-T - 35V/±2A DMOS Stepper Motor Driver | Allegro
A3982SLBTR-T ✓ ActiveSpecification Comparison
| Parameter | A4973SLBTR-T | A3982SLBTR-T |
|---|---|---|
| Brand | Allegro MicroSystems | Allegro MicroSystems |
| Category | Motor Drivers | Motor Drivers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.71 | $4.63 |
| Motor Type | Brushed DC | Bipolar stepper |
| Output Configuration | Full-Bridge (H-Bridge), 1 bridge | Dual full H-bridge |
| Number of Outputs | 2 (half-bridge pair forming 1 full bridge) | 4 (dual full bridge) |
| Continuous Output Current | ±1.5 A | ±2 A per phase |
| 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 | — |
| Operating Temperature | -20 C to +85 C | -20 C to +85 C |
| Package | 16-pin SOIC Wide Body (SLB) with exposed thermal pad | SOIC-24 (SLB) with exposed thermal pad |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | [DATA_NEEDED: MSL level] | — |
| RoHS Status | Compliant | Compliant |
| Logic Supply Voltage | — | 3 V to 5.5 V |
| Motor Supply Voltage (Load) | — | 8 V to 35 V |
| 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) |