A4980KLPTR-T vs A3938SLDTR-T Comparison
Detailed side-by-side comparison of A4980KLPTR-T by Allegro MicroSystems and A3938SLDTR-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
A3938SLDTR-T - 3-Phase BLDC MOSFET Controller, 50V | Allegro
A3938SLDTR-T ✓ ActiveSpecification Comparison
| Parameter | A4980KLPTR-T | A3938SLDTR-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 | $4.05 |
| Motor Type | Bipolar stepper | — |
| 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) | 38-pin TSSOP (LD) |
| 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 (per Alldatasheet listing) |
| Tape & Reel Quantity | 4000 per reel (T suffix) | — |
| Function | — | Three-phase BLDC motor controller / MOSFET gate driver |
| Motor Supply Voltage | — | 18 V to 50 V |
| Topology | — | Three-phase, 6-step PWM / synchronous rectification |
| Number of Outputs | — | 3 half-bridge gate drive channels |
| Output Configuration | — | Pre-driver for N-channel MOSFETs (high-side + low-side) |
| High-Side Drive | — | Bootstrap with internal bootstrap diode |
| Synchronous Rectification | — | Yes (low-side) |
| Dead Time Adjustment | — | Adjustable (external resistor) |
| MOSFET Protection | — | Cross-conduction / shoot-through protection |
| PWM Input | — | Logic-level compatible |
| Packaging | — | Tape & Reel (TR) |
| Operating Temperature | — | -20C to +85C (industrial range per datasheet) |