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Analog Devices Inc./Maxim Integrated TMC2224-LA
- Part No.:
- TMC2224-LA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
TMC2224-LA.pdf
- Description:
- STEPPER MOTOR DRIVER IC, STEP/DI
- Quantity:
- Payment:
- Shipping:
Inventory:1,450
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Product details
Overview
TMC2224-LA from TRINAMIC Motion Control GmbH & Co. KG is a two-phase bipolar stepper motor driver IC with integrated power MOSFETs, supporting up to 1.4 A RMS (2 A peak) coil current, 4.75–36 V DC supply, and QFN28 wettable flanks package. It implements StealthChop2™ for silent standstill and low-speed operation, SpreadCycle™ for high-dynamic motion, and MicroPlyer™ interpolation enabling 256 microsteps from fullstep inputs - deployed in 3D printers, CCTV pan-tilt mechanisms, and office automation systems.
For engineers reviewing the TMC2224-LA datasheet, TMC2224-LA pinout, TMC2224-LA application, or TMC2224-LA equivalent, key selection criteria include its UART-configurable chopper modes, internal sense resistor option eliminating external Rsense components, automatic standby current reduction, passive braking capability, and pin-compatible upgrade path from legacy drivers such as A4988 or DRV8825 in space-constrained embedded motion control designs.
Technical Context
The TMC2224-LA integrates dual full-bridge power stages with typical RDS(on) of 280 mΩ (LS) and 290 mΩ (HS) at 25°C, enabling efficient drive of bipolar stepper motors without external heat sinking in many applications. Its dual chopper architecture supports concurrent use of StealthChop2™ (voltage-mode, auto-tuning, no configuration required) and SpreadCycle™ (current-mode, cycle-by-cycle regulation), selectable via dedicated SPREAD pin or UART register.
Operation is supported by three interface modes: basic STEP/DIR with pin-set microstepping (1/4, 1/8, 1/16, 1/32), UART-enabled full diagnostics and dynamic parameter tuning, and standalone internal pulse generation for velocity-controlled motion. The device includes on-chip 5 V regulator (5VOUT), charge pump (VCP/CPI/CPO), and OTP memory for persistent configuration storage - all within a 5 × 5 mm QFN28 package with exposed thermal pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.75–36 V DC - supports wide-range industrial and battery-powered systems without external DC-DC pre-regulation. |
| Output Current | 1.4 A RMS / 2 A peak per coil - sufficient for NEMA 17 and smaller stepper motors in precision positioning. |
| RDS(on) (HS/LS) | 290 mΩ / 280 mΩ typ. at 25°C - minimizes conduction loss and thermal rise in compact layouts. |
| Microstepping | 1/4 to 1/32 via pins; up to 256 via MicroPlyer™ interpolation - enables smooth motion and reduced resonance without MCU firmware changes. |
| Chopper Modes | StealthChop2™ (auto-tuned, silent) + SpreadCycle™ (high-dynamic) - selectable per application phase for optimal noise/performance trade-off. |
| Interface | STEP/DIR + single-wire UART (9600–500 kbaud, auto-baud detect) - reduces MCU GPIO count and enables runtime diagnostics and tuning. |
| Protection | Overtemperature, short-to-ground, open-load, undervoltage lockout - ensures robust operation in unattended equipment like ATMs and HVAC actuators. |
Pinout & Package
Package: QFN28, 5 × 5 mm, 0.5 mm pitch, wettable flanks, exposed thermal pad (GND-connected). Designed for reflow-solderable assembly and optical solder-joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MS2, MS1 | Microstep resolution select inputs | Set hardware microstepping to 1/4, 1/8, 1/16, or 1/32; internal pull-downs enable default 1/4 step if left floating. |
| SPREAD | Chopper mode select input | High = SpreadCycle™ active; Low = StealthChop2™ active; overrides UART chopper selection when used. |
| OA1, OA2, OB1, OB2 | Motor coil A/B H-bridge outputs | Direct connection points to stepper motor windings; require low-inductance PCB routing and local decoupling. |
| BRA, BRB | External sense resistor return | Connect to GND when using internal sense resistors; otherwise tie to external 0.1 Ω SMD resistors for current sensing. |
| VREF | Analog current reference input | Sets motor run current (IRUN) when external sensing is used; also serves as reference for internal sensing mode. |
| PDN_UART | Power-down control / UART I/O | Pulled low for automatic standstill current reduction; functions as bidirectional UART line when configured via register. |
| INDEX | Index pulse output | One pulse per electrical rotation (4 fullsteps); used with mechanical homing switches for precise zero-position calibration. |
| DIAG | Diagnostic flag output | Active-high open-drain signal indicating overtemperature, short-circuit, or open-load fault; resets on ENN toggle. |
Key Features
| Feature | Design Value |
|---|---|
| StealthChop2™ chopper | Auto-tuning voltage-mode chopper delivering inaudible motor operation at standstill and low speeds - eliminates need for manual tuning or oscilloscope-based optimization. |
| SpreadCycle™ chopper | Cycle-by-cycle current regulation enabling high-acceleration motion with minimal vibration - critical for fast-printing 3D printers and responsive CCTV gimbals. |
| MicroPlyer™ interpolation | Hardware-based 256× microstep enhancement from coarse STEP inputs - preserves MCU resources while achieving smooth motion without firmware interpolation overhead. |
| Internal sense resistors | Eliminates requirement for two external 0.1 Ω sense resistors and associated layout area - reduces BOM count and improves thermal performance in dense PCBs. |
| Automatic standstill current reduction | Reduces hold current to ≤50% of run current after motion stops - cuts power dissipation and coil heating by >65%, extending motor life in always-on applications. |
Applications
| 3D Printer Motion Control | CCTV Pan-Tilt-Zoom Actuation |
|---|---|
Use Scenario: Precise layer deposition and gantry positioning in fused deposition modeling (FDM) printers. IC Role / Device Role / Timing Role: Stepper motor driver executing STEP/DIR commands with microstep interpolation and silent chopper control. Use Value: StealthChop2™ eliminates audible stepper noise during printing; MicroPlyer™ enables 256-step smoothness without MCU load; internal sense resistors reduce board area by 3.2 mm². | Use Scenario: Smooth, jitter-free camera positioning in security dome cameras with continuous rotation capability. IC Role / Device Role / Timing Role: Bipolar stepper driver managing pan/tilt motors under real-time motion profiles with diagnostic feedback. Use Value: SpreadCycle™ delivers high torque at speed for rapid slewing; INDEX output enables absolute position recovery after power loss; UART allows remote firmware updates. |
| Office Automation – Document Feeder | ATM Cash Dispenser Mechanism |
Use Scenario: Reliable paper transport and alignment in multifunction printers and scanners. IC Role / Device Role / Timing Role: Low-noise stepper driver controlling feed roller and separator motors with stall detection. Use Value: Automatic standby current reduction lowers idle power consumption by 67%; DIAG pin reports jams or obstructions without additional sensors. | Use Scenario: Accurate cash cassette movement and bill separation in automated teller machines. IC Role / Device Role / Timing Role: High-reliability stepper driver operating in temperature-variable environments with full fault logging. Use Value: Overtemperature and open-load protection prevent field failures; OTP-stored configuration ensures consistent behavior across production units; QFN28 wettable flanks support AOI inspection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stepper motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMC2208-LA | Same QFN28 package and pinout; supports only 1/8, 1/2, 1/4, 1/16 microstepping (no 1/32); lacks SPREAD pin; UART-only chopper selection. | Lower microstep flexibility; suitable for cost-sensitive designs where 1/32 resolution and hardware SpreadCycle selection are unnecessary. | Select TMC2208-LA when hardware chopper mode selection and 1/32 microstepping are not required - reduces design complexity and validation effort. |
| DRV8825 | 5 × 5 mm QFN28 but non-pin-compatible; requires external sense resistors; no UART or OTP; fixed chopper (non-auto-tuning). | Higher BOM cost and layout area; no silent operation or diagnostics; limited to 1/32 microstepping without interpolation. | Choose DRV8825 only for legacy drop-in replacement where UART, StealthChop2™, or internal sensing are not needed - avoid for new designs targeting noise-sensitive environments. |
Compared with TMC2208-LA, the TMC2224-LA adds hardware-selectable SpreadCycle™ and 1/32 microstepping, enabling faster system-level tuning; versus DRV8825, it delivers silent operation, diagnostics, and reduced component count - making it superior for next-generation consumer and industrial motion systems requiring reliability, low noise, and field-upgradable configuration.
Availability
TMC2224-LA is available at Aetrix Electronics and suitable for 3D printer motion control, CCTV pan-tilt-zoom actuation, and ATM cash dispenser mechanisms requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TMC2224-LA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
TRINAMIC Motion Control GmbH & Co. KG is a German semiconductor company specializing in high-precision motion control ICs, founded in Hamburg in 1997 and focused on silent, efficient, and intelligent motor drive solutions.
The TMC22xx product line was designed specifically for cost-effective, ultra-quiet stepper motor control in consumer, office, and industrial equipment - emphasizing drop-in upgrade capability, minimal external components, and embedded intelligence via UART and OTP.
FAQ
What is the maximum motor current supported by the TMC2224-LA?
The TMC2224-LA supports up to 1.4 A RMS (2 A peak) coil current per phase. This rating assumes proper PCB thermal design - including ≥6 thermal vias under the exposed die pad connected to a solid GND plane - and ambient temperature ≤70°C. Derating applies above 70°C per the datasheet's thermal characteristics table. The actual achievable current depends on supply voltage, microstepping mode, and chopper configuration - for example, StealthChop2™ typically delivers higher usable torque at low speeds than SpreadCycle™ at the same current setting.
Does the TMC2224-LA require external sense resistors?
No, the TMC2224-LA supports internal sense resistors, eliminating the need for external 0.1 Ω components. When enabled via UART register or OTP programming, BRA and BRB pins are internally connected to GND, and current sensing uses on-die resistors. This reduces BOM count, PCB area, and thermal stress at the sense node. External sensing remains supported for applications requiring higher accuracy or custom current scaling - in which case 0.1 Ω, 1% tolerance, low-inductance SMD resistors (e.g., 1206 package) must be placed close to BRA/BRB pins and tied directly to GND.
How does the SPREAD pin affect chopper operation in the TMC2224-LA?
The SPREAD pin on the TMC2224-LA provides hardware-level selection between StealthChop2™ (pin low) and SpreadCycle™ (pin high), overriding any UART-configured chopper mode. This enables deterministic, glitch-free chopper switching without software intervention - critical in safety-critical or real-time motion systems. When SPREAD is left unconnected, the device defaults to StealthChop2™. Unlike the TMC2208-LA, the TMC2224-LA includes this dedicated pin, allowing immediate mode switching during operation without UART communication latency.
Can the TMC2224-LA operate without an external clock source?
Yes, the TMC2224-LA includes a factory-trimmed internal oscillator that provides precise chopper timing without an external clock. The CLK pin can be tied to GND to select internal clock mode. An external 10–16 MHz crystal or oscillator may be connected to CLK for applications requiring tighter frequency stability (e.g., synchronized multi-axis systems), but it is optional. The internal clock supports all standard microstepping resolutions and chopper modes - including StealthChop2™ auto-tuning - and features timeout detection that automatically reverts to internal clock if the external source fails.
What protection features are integrated into the TMC2224-LA?
The TMC2224-LA integrates overtemperature shutdown, short-to-ground detection on all outputs, open-load diagnostics for both coils, and undervoltage lockout (UVLO). Fault conditions trigger the DIAG pin (open-drain, active-high) and can be read via UART register. Thermal protection activates at 150°C junction temperature, reducing drive strength before shutdown. Short-circuit detection responds within 2 µs, and open-load reporting occurs during standstill or slow motion. These protections operate independently of MCU control - ensuring fail-safe behavior even during firmware hangs or communication loss.
TMC2224-LA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- SPI, Step/Direction, UART
- Technology:
- Power MOSFET
- Step Resolution:
- 1 ~ 1/256
- Applications:
- General Purpose
- Current - Output:
- 1.2A
- Voltage - Supply:
- 5.5V ~ 36V
- Voltage - Load:
- 5.5V ~ 36V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN (5x5)
TMC2224-LA FAQ
1.How can I place an order for TMC2224-LA through Aetrix?
Please submit a Request for Quotation (RFQ) for TMC2224-LA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMC2224-LA reliable?
The price and inventory of TMC2224-LA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMC2224-LA is usually 5 days.
3.What payment methods are accepted for TMC2224-LA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMC2224-LA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMC2224-LA?
TMC2224-LA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMC2224-LA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMC2224-LA?
For technical support, including TMC2224-LA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMC2224-LA requirements.
6.How does Aetrix verify that TMC2224-LA is sourced from the original manufacturer or authorized distributors?
All TMC2224-LA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMC2224-LA meets industry standards.
7.What is the process for return or replacement of TMC2224-LA?
All TMC2224-LA units undergo pre-shipment inspection (PSI). If there is an issue with TMC2224-LA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMC2224-LA part is unused and in its original packaging.
Return procedure for TMC2224-LA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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