STMicroelectronics A5975ADTR Stepper Motor Driver, HTSSOP28 Package for Industrial Automation

STMicroelectronics A5975ADTR Precision Stepper Motor Driver IC Overview

The STMicroelectronics A5975ADTR is a high-performance stepper motor driver IC engineered for B2B motion control applications requiring ultra-precise position and speed management-including Industrial Automation (robot arms, conveyor belts), Consumer Electronics (3D printers, CNC routers), and Internet of Things (IoT) automated guided vehicles (AGVs). Designed to drive bipolar stepper motors (common in industrial and precision equipment), it operates from an 8V?C45V input range and delivers up to 1.0A continuous current (1.5A peak) per phase, supporting microstepping resolutions (up to 1/16 step) for smooth, accurate motion. Integrating a current limiting feature, thermal shutdown, overcurrent protection, short-circuit protection, and an exposed thermal pad into a compact HTSSOP28 (High-Temperature Small Outline Package 28-pin) surface-mount package, it operates reliably across -40??C to +150??C-making it ideal for engineers prioritizing motion precision, voltage flexibility, and thermal resilience in harsh factory or precision manufacturing environments.

As a leading motion control product from STMicroelectronics-a global expert in semiconductor solutions for industrial automation with 35+ years of expertise-it meets strict quality standards: RoHS 2 compliance, ISO 9001 certification, and IEC 61000-6-2 industrial EMC compliance. It also undergoes 2,800+ hours of durability testing (including high-temperature and voltage stress cycles). Senior engineers at a top industrial robotics firm endorse it, noting: ??The A5975ADTR??s microstepping and 45V spike protection let our robot arms operate with 25% higher accuracy, while its thermal pad keeps it cool in 70??C factories-cutting production defects by 30%.?? For more industrial-grade motion control ICs, visit IC Manufacturer.

Technical Parameters of STMicroelectronics A5975ADTR

Key Technical Features of A5975ADTR Stepper Motor Driver

• Up to 1/16 microstepping: Enables smooth, precise motion for robot arms and 3D printers. An industrial robotics engineer reported: ??1/16 step mode cuts our robot arm??s position error from 0.5mm to 0.1mm-critical for assembling small components.??
• 8V?C45V wide input range: Compatible with 12V/24V industrial power and 40V IoT AGV batteries. An IoT AGV firm noted: ??Handles 24V battery spikes to 42V-old 35V-max drivers failed 12% of the time, causing AGV stalls.??
HTSSOP28 thermal pad (32??C/W resistance): Reduces heat by 38% vs. standard SSOP28 (52??C/W). A factory designer shared: ??In 70??C factories, it stays at 95??C-standard packages hit 138??C and shut down.??
• 1.5A peak current: Powers small-to-medium stepper motors (e.g., 3D printer extruders) without external boosters. A 3D printer brand confirmed: ??Drives our extruder motor with no extra components-cuts PCB space by 30%.??
• Built-in current limiting: Prevents motor overloads without external shunts. An industrial conveyor firm explained: ??Eliminates 3 external resistors-saves space and improves current control accuracy by 12%, reducing motor wear.??

Advantages of A5975ADTR vs. Typical Stepper Motor Drivers

Compared to low-resolution drivers, narrow-input ICs, and non-thermal-pad packages, the A5975ADTR solves critical B2B motion control pain points-backed by real customer feedback:

1. High microstepping beats low-resolution drivers: Most basic stepper drivers only support full/half stepping, causing jerky motion and position errors in precision equipment (e.g., 3D printers). The A5975ADTR??s 1/16 step mode fixes this. A 3D printer manufacturer said: ??Our old full-step driver caused 40% of print defects (layer misalignment)-this 1/16 step model cuts defects to 10%. Customer returns dropped by 35%, and sales of high-precision printers rose by 22%.??

2. 45V input range outperforms narrow alternatives: Low-cost stepper drivers max at 35V, failing during 40V+ spikes from industrial machinery or AGV batteries. The A5975ADTR??s 45V max handles these. An IoT AGV firm confirmed: ??Our 24V AGV battery spikes to 42V during charging-old 35V drivers failed 12% of the time, causing 2 hours of daily downtime. This driver has 0% failures, ensuring 24/7 warehouse operation and improving order fulfillment speed by 8%.??

3. Thermal pad prevents downtime vs. standard packages: Standard SSOP28 packages overheat in 70??C factories, triggering thermal shutdowns that halt production. The HTSSOP28??s pad dissipates heat faster. An industrial conveyor firm shared: ??Our conveyor belts run in 70??C warehouses-standard drivers caused 3.5 hours of daily downtime. This A5975ADTR model stays cool, no shutdowns. Production efficiency rose by 9%, and we saved $160,000 in lost output annually.??

Typical Applications of STMicroelectronics A5975ADTR

The A5975ADTR excels in precision motion control designs-proven in these key B2B use cases:

• Industrial Automation (Robot Arms): Drives stepper motors for joint movement from 24V factory power. An robotics firm confirmed: ??1/16 microstepping boosts accuracy by 25%, thermal pad prevents overheating-robot defect rates down 30%.??
• Consumer Electronics (3D Printers): Controls extruder stepper motors from 12V power. A 3D printer brand noted: ??Peak current handles startup loads, microstepping ensures layer precision-print defects cut by 40%.??
• Internet of Things (IoT) AGVs: Powers drive stepper motors from 24V battery. An IoT firm reported: ??Wide input handles charging spikes, current limiting protects motors-AGV failure rates down 28%.??
• Industrial Automation (Conveyor Belts): Regulates stepper motor speed for position alignment from 24V power. A factory tech firm shared: ??Microstepping reduces jitter, thermal pad prevents shutdowns-conveyor position errors cut by 90%.??
• Consumer Electronics (CNC Routers): Drives stepper motors for tool movement from 12V power. A CNC brand confirmed: ????10% current accuracy ensures consistent cuts, HTSSOP28 saves PCB space-router precision up by 22%.??

Frequently Asked Questions (FAQ) About A5975ADTR

Why is 1/16 microstepping important for industrial robot arms?

Industrial robot arms assembling small components (e.g., electronics parts) need position accuracy of ??0.1mm. Full/half stepping (low-resolution) causes errors of 0.5mm+, leading to defective assemblies. The A5975ADTR??s 1/16 step mode fixes this. An robotics engineer said: ??Our old full-step driver caused 30% of defective parts-this 1/16 step model cuts errors to 0.1mm. Defect rates dropped by 30%, and we saved $130,000 in rework costs annually. Robot arms now handle 25% more precision tasks.??

Can the A5975ADTR work with 24V IoT AGV batteries?

Yes. Its 8V?C45V input range is optimized for 24V AGV batteries and easily handles common voltage spikes (up to 42V) during charging or heavy load. Most low-cost drivers max at 35V and fail here. An IoT AGV designer confirmed: ??Our AGV??s 24V battery spikes to 42V when charging-old 35V drivers failed 12% of the time, stranding AGVs in warehouses. This driver maintains stable motor control, no stalls. Downtime dropped by 2 hours daily, and order fulfillment speed improved by 8%.??

What value does the HTSSOP28 thermal pad add for factory conveyor belts?

Factory conveyors run in 70??C+ environments, where standard SSOP28 drivers overheat to 138??C and shut down-halting production. The HTSSOP28??s thermal pad (32??C/W) dissipates heat 38% better. A factory manager shared: ??Our old SSOP28 driver caused 3.5 hours of daily conveyor downtime. This A5975ADTR with its thermal pad stays at 95??C, no shutdowns. Production efficiency rose by 9%, and we moved 15% more products monthly-adding $160,000 in annual revenue.??

Why is built-in current limiting useful for 3D printer extruders?

3D printer extruders can overload (e.g., when filament jams), causing stepper motor damage. External current-limiting components add space and cost. The A5975ADTR??s built-in feature monitors current and triggers protection. A 3D printer brand noted: ??Eliminates 3 external resistors-saves 25mm2 of PCB space. It shuts down if current exceeds 1.5A, preventing motor burnout. Extruder repair costs dropped by 60%, and customer complaints about jammed printers fell by 45%.??

How does peak current benefit small industrial stepper motors?

Small industrial stepper motors (e.g., conveyor position motors) need short bursts of high current to start or lift light loads-continuous current alone isn??t enough. The A5975ADTR??s 1.5A peak current delivers these bursts. A factory tech specialist explained: ??Our conveyor motor needs 1.2A to start-1.0A continuous current isn??t enough. The peak current lets it start smoothly, cutting jitter by 80%. Conveyor position errors dropped from 2mm to 0.2mm, reducing product misalignment and waste by 12%.??