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In stock: 1-3 working days / No stock: 4-8 weeks on averageL99SM81VQ6TR Motor / Motion / Ignition Controllers & Drivers
Parameter
| Manufacturer | STMicroelectronics |
| Product Category | Motor / Motion / Ignition Controllers & Drivers |
| Series | L99SM81V |
| Product Type | Automotive Stepper Motor Driver |
| Product | Programmable Micro-Stepping Driver for Bipolar Stepper Motors |
| Motor Type | 2-Phase Bipolar Stepper Motor |
| Driver Topology | Dual Full H-Bridge (4 Outputs) |
| Output Current | 1.35 A |
| Load Voltage | 6 V to 28 V |
| Output Voltage | 5 V |
| Operating Frequency | 40 kHz PWM |
| Control Interface | SPI |
| Integrated Features | Micro-Stepping, Integrated ADC, Stall Detection, Current Sensing, Programmable Decay Modes, PWM Frequency Wobbling, 5 V LDO Regulator |
| Protection Features | Thermal Warning, Thermal Shutdown, Output Diagnostics, Short-Circuit Protection |
| Qualification | AEC-Q100 |
| Package / Case | QFN-40 (6 × 6 mm) |
| Mounting Style | SMD/SMT |
| Operating Temperature Range | -40 °C to +150 °C |
| Moisture Sensitive | Yes |
| Packaging | Reel, Cut Tape, MouseReel |
| Brand | STMicroelectronics |
| Factory Pack Quantity | 3000 |
| Subcategory | PMIC - Power Management ICs |
| Unit Weight | 0.106 g |
Application
The L99SM81VQ6TR is an AEC-Q100 qualified automotive programmable stepper motor driver designed for precise control of two-phase bipolar stepper motors using current-controlled micro-stepping. It integrates dual full H-bridges, programmable step and decay modes, an SPI interface, integrated ADC for coil voltage measurement and stall detection, fully integrated current sensing, PWM frequency wobbling for reduced EMI, and a protected 5 V LDO regulator. Comprehensive diagnostic features, including thermal warning, thermal shutdown, and output protection, make it well suited for automotive adaptive front lighting systems (AFS), head-up display (HUD) projectors, headlamp leveling systems, throttle valve control, HVAC actuators, and other precision automotive motion-control applications. :contentReference[oaicite:0]{index=0}
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