A4980KLPTR-T vs A3977SLPTR-T Comparison
Detailed side-by-side comparison of A4980KLPTR-T by Allegro MicroSystems and A3977SLPTR-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
A4980KLPTR-T - 28V 1.4A Bipolar Stepper Driver, TSSOP-28EP | Allegro
A4980KLPTR-T ✓ ActiveAllegro MicroSystems
A3977SLPTR-T - 35V/±2.5A Microstepping DMOS Driver | Allegro MicroSystems
A3977SLPTR-T ✓ ActiveSpecification Comparison
| Parameter | A4980KLPTR-T | A3977SLPTR-T |
|---|---|---|
| Brand | Allegro MicroSystems | Allegro MicroSystems |
| Category | Motor Drivers | Motor Drivers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.20 | $3.65 |
| Motor Type | Bipolar stepper | Bipolar stepper motor |
| Step Resolution | Full, 1/2, 1/4, 1/16 microstep | — |
| Motor Supply Voltage (max) | 28 V | — |
| Output Current per Phase (peak) | ±1.4 A | — |
| Output Current per Phase (continuous, typical) | ±750 mA | — |
| Low-side RDS(on) | 0.5 Ω typical | — |
| Output Stage | DMOS with synchronous rectification | — |
| Control Interface | Step/Direction + SPI-compatible serial | — |
| Current Decay Modes | Automatic selection of Mixed, Fast, Slow | — |
| Shoot-through Protection | Yes, internal timers | — |
| Output Short-circuit Protection | Yes | — |
| Stalled Rotor Detection | Yes (flag via SPI) | — |
| Low-load-current Detection | Yes (flag via SPI) | — |
| Package | 28-pin TSSOP with exposed thermal pad (KLP) | 28-pin TSSOP-EP (exposed pad) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] | — |
| AEC-Q100 Automotive Grade | Automotive qualified (per datasheet title) | — |
| RoHS Status | Compliant | Compliant |
| Tape & Reel Quantity | 4000 per reel (T suffix) | — |
| Step Modes | — | Full, half, quarter, eighth |
| Output Configuration | — | Dual full H-bridge (2 outputs) |
| Load Voltage (Motor Supply) | — | 8 V to 35 V |
| Logic Supply Voltage | — | 3 V to 5.5 V |
| Output Current (per phase) | — | ±2.5 A |
| Maximum Output Voltage Rating | — | 35 V |
| rDS(on) - Source DMOS (typical) | — | 0.45 ohm |
| rDS(on) - Sink DMOS (typical) | — | 0.36 ohm |
| Current Control | — | Fixed off-time PWM with slow/fast/mixed decay |
| Synchronous Rectification | — | Yes (internal) |
| Sleep Mode | — | Yes (low-power) |
| Automatic Decay Mode Selection | — | Yes |
| Operating Temperature | — | -20 C to +85 C |