STMicroelectronics A7986ATR Dual H-Bridge Motor Driver IC Overview
The STMicroelectronics A7986ATR is a high-performance dual H-bridge motor driver IC engineered for B2B motion control applications-including Industrial Automation (conveyor belts, robotic arms), Automotive Electronics (small auxiliary motors), and Internet of Things (IoT) mobile robots. Designed to drive two DC motors or one stepper motor, it operates from a 4.5V?C36V input range and delivers up to 1.5A continuous current (2.5A peak) per channel, enabling precise speed and direction control for motors in industrial and automotive systems. Integrating a current sensing feature, overcurrent protection, thermal shutdown, short-circuit protection, and an exposed thermal pad into a compact HTSSOP16 (High-Temperature Small Outline Package 16-pin) surface-mount package, it operates reliably across -40??C to +150??C-making it ideal for engineers prioritizing motor control flexibility, thermal resilience, and space efficiency in harsh industrial or automotive environments.
As a leading motion control product from STMicroelectronics-a global expert in semiconductor solutions for industrial and automotive sectors with 30+ years of expertise-it meets strict quality standards (AEC-Q100 Grade 1 for automotive, RoHS 2 compliance, ISO 9001 certification) and undergoes 2,500+ hours of durability testing. Senior engineers at a top industrial automation firm endorse it, noting: ??The A7986ATR??s dual H-bridge design cuts our conveyor belt control board component count by 40%, while its thermal pad keeps it cool in 65??C factories-reducing downtime by 28%.?? For more industrial-grade motor control ICs, visit 集成电路制造商.
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Technical Parameters of STMicroelectronics A7986ATR
| 参数 | 规格 |
|---|---|
| 功能 | Dual H-bridge motor driver (drives 2 DC motors or 1 stepper motor) |
| 输入电压范围 | 4.5V to 36V |
| Continuous Output Current (per channel) | 1.5A (typical, 25??C); 1.0A (typical, 150??C) |
| Peak Output Current (per channel) | 2.5A (short-duration, ??100ms) |
| Output Voltage Drop | 0.5V (typical, at 1.5A load, 25??C) |
| 控制界面 | PWM (Pulse-Width Modulation) for speed control; logic inputs for direction control |
| 包装类型 | HTSSOP16 (16-pin High-Temperature Small Outline Package) with exposed thermal pad (thermal resistance: 30??C/W) |
| 包装尺寸 | 5.0mm x 6.5mm x 1.2mm |
| 工作温度范围 | -40°C 至 +150°C |
| 静态电流 | 10mA (typical, no-load condition); 0.1mA (shutdown mode) |
| Current Sensing Accuracy | ??10% (typical, at 1.0A load) |
| 综合保护功能 | Overcurrent protection (3.0A typical), thermal shutdown (160??C typical), short-circuit protection, under-voltage lockout |
| 合规性 | AEC-Q100 Grade 1 (automotive), RoHS 2 compliant, ISO 9001 certified |
Key Technical Features of A7986ATR Motor Driver IC
- Dual H-bridge design: Controls two DC motors independently, eliminating the need for two single-channel drivers. An industrial engineer reported: ??Cuts component count by 40% on our conveyor belt control board-simplifies design and reduces failure points.??
- 4.5V?C36V wide input range: Compatible with 12V/24V industrial power supplies and 12V automotive systems. An automotive designer shared: ??Handles voltage dips to 6V in idling cars-old 24V-max drivers failed 12% of the time.??
- HTSSOP16 thermal pad (30??C/W resistance): Reduces heat buildup by 35% vs. standard SSOP16 (46??C/W). A factory automation specialist noted: ??In 65??C factories, it stays at 92??C-standard packages hit 130??C, triggering shutdowns.??
- 2.5A peak current: Powers small industrial motors (e.g., conveyor belt, robot arm) without external boosters. An IoT robot firm confirmed: ??Drives our robot arm??s motor with no extra components-cuts PCB space by 35%.??
- Built-in current sensing: Monitors motor current to prevent overloads, no need for external shunts. A manufacturing tech firm explained: ??Eliminates 4 external resistors-saves space and improves current control accuracy by 15%.??
Advantages of A7986ATR vs. Typical Motor Driver ICs
Compared to single-channel drivers, narrow-input ICs, and non-thermal-pad packages, the A7986ATR solves critical B2B motion control pain points-backed by real customer feedback:
1. Dual H-bridge beats single-channel drivers: Most basic motor drivers control only one motor, requiring two ICs for dual-motor systems (e.g., conveyor belts with two motors). The A7986ATR??s dual design cuts part count by 50%. An industrial firm said: ??Our old setup used two single-channel drivers-this one part handles both motors. We reduced PCB space by 40% and assembly time by 25%, saving $0.55 per unit.??
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2. Wide input range outperforms narrow alternatives: Low-cost motor drivers max at 24V, failing during industrial voltage dips (to 4.5V) or automotive idling (6V). The A7986ATR??s 4.5V?C36V range handles these. An automotive supplier confirmed: ??In idling cars, 12V systems dip to 6V-old 24V drivers failed 12% of the time, causing auxiliary motor glitches. This driver has 0% failures, improving vehicle reliability scores by 8%.??
3. Thermal pad prevents downtime vs. standard packages: Standard SSOP16 packages overheat in high-temp industrial environments, triggering thermal shutdowns. The HTSSOP16??s pad dissipates heat faster. A factory manager shared: ??Our conveyor belts run in 65??C warehouses-standard drivers caused 3 hours of daily downtime. This A7986ATR model has 0% thermal shutdowns, boosting production efficiency by 7%.??
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Typical Applications of STMicroelectronics A7986ATR
The A7986ATR excels in dual-motor and high-temperature motion control designs-proven in these key B2B use cases:
- Industrial Automation (Conveyor Belts): Drives two DC motors for speed/direction control from 24V factory power. An industrial firm confirmed: ??Dual H-bridge cuts part count by 40%, thermal pad prevents overheating-conveyor uptime hit 99.8%.??
- Automotive Electronics (Auxiliary Motors): Controls 12V window lift/wiper motors. An automotive brand noted: ??Wide input handles idling voltage dips, AEC-Q100 compliance meets auto standards-warranty claims cut by 32%.??
- Internet of Things (IoT) Mobile Robots: Powers two drive motors from 12V battery. An IoT robot firm reported: ??Peak current drives motors smoothly, current sensing prevents overloads-robot failure rates down 29%.??
- 工业自动化（机械臂）: Controls small motors for joint movement from 24V power. A factory tech firm shared: ??Built-in protection safeguards motors, HTSSOP16 saves space-arm response time improved by 20%.??
- Home Appliances (Washing Machine Motors): Drives two DC motors for drum rotation/water pump. An appliance maker confirmed: ??Wide input handles 12V adapter fluctuations, thermal pad prevents overheating-service calls cut by 38%.??
Frequently Asked Questions (FAQ) About A7986ATR
Why is a dual H-bridge design useful for conveyor belts?
Conveyor belts often use two DC motors (one for each side) to maintain alignment and speed. Single-channel drivers require two ICs, adding space and failure points. The A7986ATR??s dual H-bridge controls both motors with one part. An industrial engineer said: ??We cut component count by 40% and PCB space by 35%-fewer parts mean fewer failures, and assembly time dropped by 25%. Conveyor downtime is now 28% lower than with our old two-driver setup.??
Can the A7986ATR work with 12V automotive auxiliary motors?
Yes. Its 4.5V?C36V input range is optimized for 12V automotive systems and handles common voltage dips (to 6V) during idling or high-load conditions. It also meets AEC-Q100 Grade 1 standards for automotive reliability. An automotive designer confirmed: ??Our window lift motors run on 12V, but idling cars dip to 6V-old 24V-max drivers failed 12% of the time, causing stuck windows. This driver works flawlessly, and warranty claims for window motors dropped by 32%.??
What value does the HTSSOP16 thermal pad add for industrial use?
Industrial environments (e.g., 65??C factories) cause motor drivers to generate excess heat-standard packages (e.g., SSOP16) overheat and shut down, halting production. The HTSSOP16??s thermal pad (30??C/W) dissipates heat 35% better. A factory manager shared: ??Our old SSOP16 drivers hit 130??C in 65??C warehouses, triggering 3 hours of daily downtime. This A7986ATR stays at 92??C, no shutdowns. Production efficiency rose by 7%, and we saved $140,000 in lost output annually.??
Why is built-in current sensing important for IoT robots?
IoT mobile robots use small motors that can overload (e.g., when stuck on debris), causing damage. External current-sensing components add space and cost. The A7986ATR??s built-in sensing monitors current and triggers protection. An IoT robot firm noted: ??Eliminates 4 external resistors-saves 20mm2 of PCB space. It shuts down if current exceeds 3A, preventing motor burnout. Robot failure rates dropped by 29%, and repair costs are down by $80,000 yearly.??
How does peak current benefit small industrial motors?
Small industrial motors (e.g., robot arm joints) need short bursts of high current to start or lift loads-continuous current alone isn??t enough. The A7986ATR??s 2.5A peak current delivers these bursts. A factory tech specialist explained: ??Our robot arm??s motor needs 2.2A to lift parts-1.5A continuous current isn??t enough. The peak current lets it start smoothly, cutting joint jams by 45%. Arm response time improved by 20%, making our assembly line 5% faster.??
