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Analog Devices Inc./Maxim Integrated TMC2300-LA
- Part No.:
- TMC2300-LA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
TMC2300-LA.pdf
- Description:
- LOW VOLTAGE STEPPER MOTOR DRIVER
- Quantity:
- Payment:
- Shipping:
Inventory:1,517
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Product details
Overview
TMC2300-LA from TRINAMIC Motion Control GmbH & Co. KG is a low-voltage, integrated stepper motor driver IC with integrated power MOSFETs, supporting 2-phase stepper motors up to 1.2A RMS (2A peak), operating from 2V–11V DC supply, and featuring StealthChop2™ for silent motion in battery-powered handheld and IoT devices.
For engineers reviewing the TMC2300-LA datasheet, TMC2300-LA pinout, TMC2300-LA application, or TMC2300-LA equivalent, key selection criteria include ultra-low standby current (<50nA), UART-configurable CoolStep™ energy saving, StallGuard4™ sensorless stall detection, and QFN20 3×3 mm package compatibility with space-constrained embedded motion systems.
Technical Context
The TMC2300-LA implements a dual full-bridge power stage with internal charge pump enabling 170mΩ typical RDS(on) per FET at low supply voltages (≥2V), supporting precise 256-microstep interpolation via MicroPlyer™ and real-time current regulation in StealthChop2™ mode. It operates in two primary modes: STEP/DIR standalone (pin-configured microstepping) and UART-controlled (full diagnostics, dynamic current tuning, and internal pulse generation).
Its architecture integrates StallGuard4™ for load-dependent current adaptation, automatic standstill current reduction (IHOLD ≤ 50% IRUN), and programmable DIAG output for error/stall/index reporting. The device uses feed-forward regulation to eliminate external sense resistors when required, and features a dedicated 1.8V LDO (1.8VOUT) with <100nF bypass capacitor support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 11V DC - supports single Li-Ion (2.5–4.2V) or dual AA/NiMH (2.4–3.0V) operation without boost converter |
| Motor Current Capability | 1.2A RMS / 2A peak per coil - sufficient for NEMA 8–11 stepper motors in portable applications |
| Standby Current | <50nA typical - enables multi-year battery life in always-on IoT endpoints |
| Microstepping Resolution | Full-step to 1/256 step - selectable via pins (8/16/32/64) or UART (full range), with MicroPlyer™ interpolation smoothing lower-resolution inputs |
| RDS(on) (HS + LS) | 170mΩ typ. per FET - achieved via internal charge pump, minimizing conduction loss at low VS |
| Interface Options | STEP/DIR + 2-pin UART (PDN_UART) - enables either legacy control or full diagnostics with only three wires (STEP, DIR, PDN_UART) |
| Protection Features | Overtemperature, short-circuit, open-load, undervoltage lockout - ensures robust operation without external supervision circuitry |
Pinout & Package
Package: QFN20, 3 mm × 3 mm, 0.4 mm pitch, exposed thermal pad (connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OA1, OA2, OB1, OB2 | Motor coil A/B high-side/low-side outputs | Drive 2-phase bipolar stepper motor; each pair forms full H-bridge with internal MOSFETs |
| BRA, BRB | Sense resistor connections for coil A/B | Enable current sensing; optional use with feed-forward regulation eliminates need for physical resistors |
| STEP, DIR | Digital motion control inputs | Accept CMOS-level pulses; support both rising-edge and dual-edge (DEDGE) stepping for reduced signal bandwidth |
| PDN_UART | UART I/O / Standby enable | In standalone mode: active-low auto-standby trigger; in UART mode: bidirectional serial interface with CRC |
| VIO/NSTDBY | Digital I/O supply & standby control | 1.8–5V input; pulling to GND forces full standby (reset + shutdown of logic and LDO) |
| DIAG | Programmable diagnostic output | Configurable as stall flag, error indicator, or index pulse (1 per electrical rotation); active-high, open-drain |
| 1.8VOUT | Internal LDO output | Provides regulated 1.8V for internal logic; requires 100nF ceramic cap to GND for stability |
| EN | Driver enable | Active-high; disables all H-bridges (outputs float), clears error flags on falling edge |
Key Features
| Feature | Design Value |
|---|---|
| StealthChop2™ chopper algorithm | Enables inaudible motor operation at standstill and low speeds without configuration - eliminates mechanical resonance noise in office/home automation |
| CoolStep™ current adaptation | Reduces motor current by up to 90% under light load using StallGuard4™ feedback - cuts PCB heating and extends battery runtime |
| StallGuard4™ sensorless homing | Measures back-EMF-based load torque in StealthChop mode - enables reliable end-stop detection without physical switches in thermostatic valves or POS printers |
| MicroPlyer™ microstep interpolation | Generates smooth 256-microstep motion from coarse STEP/DIR inputs (e.g., full-step or 1/8-step) - improves positioning resolution without MCU firmware changes |
| Integrated pulse generator | Drives motor at set velocity via UART alone - eliminates STEP/DIR signal generation in simple linear-motion applications like HVAC damper control |
Applications
| IoT & Handheld Devices | Battery-Powered Medical Equipment |
|---|---|
Use Scenario: Compact smart thermostat with motorized valve actuation and Bluetooth connectivity. IC Role / Device Role / Timing Role: Stepper driver controlling 1.2A thermostatic radiator valve; manages quiet positioning and zero-power hold via CoolStep™ and standby modes. Use Value: Enables >5-year battery life using two AA cells while maintaining sub-0.1° positioning accuracy and silent operation during nighttime cycles. |
Use Scenario: Portable insulin pump requiring precise, vibration-free syringe advancement. IC Role / Device Role / Timing Role: Low-noise stepper driver for micro-stepping syringe plunger; uses StallGuard4™ to detect occlusion and halt before pressure buildup. Use Value: Eliminates audible motor whine during patient wear and provides fail-safe stall detection without added sensors or PCB area. |
| Miniature 3D Printers | Office Automation (POS/Label Printers) |
Use Scenario: Desktop resin printer with compact XY gantry and silent Z-axis lift. IC Role / Device Role / Timing Role: Dual-axis stepper driver delivering 256-microstep smoothness and StealthChop2™ noise suppression during layer exposure pauses. Use Value: Achieves <10dB(A) acoustic emission during printing - meets Class I office noise standards without enclosure shielding. |
Use Scenario: Thermal receipt printer with auto-cutter and paper feed mechanism. IC Role / Device Role / Timing Role: Single-chip driver for paper advance and cutter actuation; leverages internal pulse generator for timed cut sequences independent of host MCU timing. Use Value: Reduces BOM count by eliminating separate timing ICs and simplifies firmware by offloading motion sequencing to hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stepper motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB67S109AFTG | Higher voltage range (4.5–44V), no integrated UART, no CoolStep or StallGuard, requires external sense resistors | Suitable for 12V+ industrial actuators; lacks sensorless homing and battery-optimized low-power modes | Select when operating above 11V or needing higher current (2A RMS) without UART configurability |
| DRV8886ATRGER | 2.7–11.5V supply, 1.5A peak, no StealthChop, no StallGuard, SPI interface only, no internal LDO | Targeted at cost-sensitive consumer electronics; lacks microstep interpolation and ultra-low standby current | Select for simpler designs where 50nA standby and silent operation are not required |
Compared with TMC2300-LA, TB67S109AFTG supports higher bus voltages but adds external components and forfeits battery-life extensions; DRV8886ATRGER offers SPI control but omits critical low-noise and energy-saving features essential for portable medical and IoT use cases.
Availability
TMC2300-LA is available at Aetrix Electronics and suitable for IoT edge nodes, portable medical devices, and miniature 3D printers requiring stable component supply, long-term lifecycle assurance, and consistent QFN20 packaging across production batches.
Supply support for TMC2300-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 intelligent motor drivers with embedded intelligence.
The TMC2300-LA belongs to TRINAMIC's low-voltage stepper driver product line, designed specifically for battery-powered, space-constrained applications demanding silent operation, ultra-low power consumption, and sensorless motion control.
FAQ
What is the minimum supply voltage required for reliable operation of the TMC2300-LA?
The TMC2300-LA operates down to 2.0V DC with typical performance; absolute minimum is 1.8V per datasheet Absolute Maximum Ratings. Below 2.0V, motor current regulation degrades and StealthChop2™ may lose synchronization. For stable 1.2A RMS output, ≥2.2V is recommended with proper input capacitance (≥10µF ceramic + bulk electrolytic).
Does the TMC2300-LA require external sense resistors to function?
No - the TMC2300-LA supports feed-forward current regulation that eliminates external sense resistors when BRA and BRB are tied directly to GND. This mode uses velocity-based scaling and internal current modeling, and is fully supported in StealthChop2™ and CoolStep™ operation. External resistors remain optional for highest accuracy.
How does StallGuard4™ work in the TMC2300-LA, and what applications benefit most?
StallGuard4™ measures motor coil back-EMF during StealthChop2™ operation to infer mechanical load without additional sensors. It delivers real-time torque data used for stall detection, sensorless homing, and CoolStep™ current adaptation. Applications like smart thermostatic valves, lab-on-chip fluid handlers, and automated document feeders rely on this feature for maintenance-free positioning.
Can the TMC2300-LA drive a stepper motor without any microcontroller involvement?
Yes - the TMC2300-LA includes an internal step pulse generator controllable via UART. By writing a target velocity register, the IC autonomously drives the motor at that speed until stopped via EN or UART command. This enables "fire-and-forget" motion in simple applications such as HVAC damper actuation or timer-based dispensers.
What thermal management considerations apply to the TMC2300-LA in its QFN20 package?
The TMC2300-LA requires direct connection of the exposed die pad to a solid internal or bottom-layer GND plane using ≥4 thermal vias (0.3mm diameter). PCB layout must minimize copper resistance between VS/GND pins and bulk capacitors. At 1.2A RMS, junction temperature rise is ≤25°C above ambient with 2 cm² 2-layer copper pour - no heatsink needed in most handheld designs.
TMC2300-LA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- stallGuard™
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tube
- 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:
- Step/Direction, UART
- Technology:
- Power MOSFET
- Step Resolution:
- 1 ~ 1/256
- Applications:
- Automation Control, Medical, Printer
- Current - Output:
- 1.2A
- Voltage - Supply:
- 2V ~ 11V
- Voltage - Load:
- 2V ~ 11V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x3)
TMC2300-LA FAQ
1.How can I place an order for TMC2300-LA through Aetrix?
Please submit a Request for Quotation (RFQ) for TMC2300-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 TMC2300-LA reliable?
The price and inventory of TMC2300-LA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMC2300-LA is usually 5 days.
3.What payment methods are accepted for TMC2300-LA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMC2300-LA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMC2300-LA?
TMC2300-LA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMC2300-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 TMC2300-LA?
For technical support, including TMC2300-LA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMC2300-LA requirements.
6.How does Aetrix verify that TMC2300-LA is sourced from the original manufacturer or authorized distributors?
All TMC2300-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 TMC2300-LA meets industry standards.
7.What is the process for return or replacement of TMC2300-LA?
All TMC2300-LA units undergo pre-shipment inspection (PSI). If there is an issue with TMC2300-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 TMC2300-LA part is unused and in its original packaging.
Return procedure for TMC2300-LA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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