TB6600 - 5A Stepper Motor Driver IC | Toshiba | CNC
MPN: TB6600 ✓ Active| Qty | Unit Price | Extended |
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TB6600 Overview
A stepping motor driver IC is a power management device that converts low-current logic-level STEP and DIR pulse signals from a microcontroller into high-current phase currents required by a stepper motor. Within the power electronics hierarchy, it sits between the motor controller (MCU or CNC breakout board) and the motor windings, performing current regulation, microstepping interpolation, and protection functions in a single package.
Key features include a wide 9V to 40V DC motor supply range on typical module implementations, output current selectable in 8 steps from 0.7A to 4.0A via DIP switches, and a maximum input pulse frequency of 20 kHz. The device integrates under-voltage lockout (UVLO), over-current detection (ISD), and thermal shutdown (TSD) protection circuits, per the Toshiba product page.
The TB6600 uses bipolar power MOSFET output stages in an H-bridge arrangement for each phase, enabling full bipolar drive of 2-phase and 4-phase hybrid stepper motors. Microstepping up to 1/16 reduces torque ripple and audible noise compared with full-step drive. The decoded current decay control maintains smooth phase-current waveforms across the speed range.
Typical applications include DIY and light-duty CNC routers, 3D printers driving NEMA 17 and NEMA 23 motors, engraving machines, and small robotics, where optocoupler-isolated signal inputs (on common TB6600 modules) protect the controller from motor-side voltage transients.
Design consideration: thermal management dominates the design - at 4A the HZIP package requires a substantial aluminum heatsink, and the manufacturer notes the part is not intended for professional-grade applications.
This page synthesizes distributor data, verified specifications, comparisons against DM542, A4988, and TMC2209, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for TB6600 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TB6600HG
✅ Drop-In📋 Reference alternative (not in catalog)
TB6600 Maximum Ratings & Electrical Characteristics
| Product Type | 1-Channel Bipolar Stepping Motor Driver IC |
| Manufacturer Part (IC) | TB6600HG |
| Motor Supply Voltage (module) | 9 V to 40 V DC |
| Absolute Maximum Motor Voltage (IC) | 50 V |
| Output Current (module, DIP selectable) | 0.7 A to 4.0 A (8 steps) |
| Maximum Output Current (IC rating) | 5 A |
| Microstepping Resolution | Up to 1/16 step |
| Input Pulse Frequency | Up to 20 kHz |
| Motor Types Supported | 2-phase and 4-phase hybrid stepper motors |
| Output Configuration | Bipolar H-bridge, power MOSFET parallel outputs |
| Signal Interface | 5V STEP/DIR logic; optocoupler isolated on modules |
| Protection Functions | UVLO, over-current detection (ISD), thermal shutdown (TSD) |
| Package | HZIP25 (25-pin HSOP power package) |
| Mounting Type | Through-hole / flanged power package |
TB6600 hzip25 (25-pin hsop power package) Pin Configuration Guide
Pin configuration for TB6600 (hzip25 (25-pin hsop power package) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TB6600.
Refer to the datasheet for full pin configuration.
Typical Applications
TB6600 is suitable for 6 applications: DIY CNC Routers, 3D Printers (NEMA 17 Axes), Laser Engraving and Cutting Machines, Hobby Robotics and Camera Sliders, Automated Test and Laboratory Positioning, Small CNC Mill and Engraver Retrofits.
DIY CNC Routers
The TB6600 is the most common low-cost driver in DIY and light-duty CNC router builds, where its 9-40V supply and 0.7A-4.0A DIP-selectable output match NEMA 17 and NEMA 23 hybrid stepper motors on X, Y, and Z axes. According to Toshiba's datasheet notes, it is a low-cost microstepping drive not intended for professional applications, making it ideal for hobby machines cutting wood, plastic, and soft aluminum. Microstepping up to 1/16 step at input pulse rates up to 20 kHz provides surface-finish improvements over full-step drive, while integrated UVLO, over-current detection, and thermal shutdown protect the motor and supply during stalling events common in hobby machining.
Recommended
3D Printers (NEMA 17 Axes)
The TB6600 drives NEMA 17 stepper motors in 3D printers and motion platforms where standard motherboard drivers lack current headroom. Per DFRobot, the driver supports types 42/57 and NEMA 17/23 motors and accepts 5V STEP/DIR signals from any microcontroller, with high-speed optocoupler isolation ensuring signal stability and anti-high-frequency interference - useful on printers with long motor harnesses near heated beds. The 1/16-step microstepping mode reduces layer-artifact vibration and audible noise relative to full-step operation. At typical NEMA 17 currents of 1.2A-2A, the module runs comfortably below its 4.0A limit, so thermal margin is generous and enclosure fanless operation is practical in most builds.
Recommended
Laser Engraving and Cutting Machines
Laser engravers require smooth, vibration-free motion to produce clean cut edges, and the TB6600's up-to-1/16 microstepping reduces torque ripple that would otherwise appear as visible scalloping in engraved lines. The 20 kHz maximum input pulse frequency supports rapid raster-scan moves typical of laser workloads, while the 9-40V supply range lets builders reuse common 12V, 24V, or 36V laser power supplies. According to the WaterElectronics application summary, the driver suits 2-phase and 4-phase hybrid stepper systems, which covers the majority of benchtop laser frames. Optocoupler isolation on modules prevents laser-driver electrical noise from coupling back into the controller STEP/DIR lines.
Recommended
Hobby Robotics and Camera Sliders
For mobile robots, pan-tilt mechanisms, and camera sliders, the TB6600 provides precise open-loop position control via STEP/DIR pulses with holding torque that servos cannot match at similar cost. Its 0.7A minimum current setting accommodates small NEMA 14/17 motors in lightweight payloads, while the 8-step DIP current selection lets one module design serve multiple motor sizes. The Toshiba TB6600HG's integrated protection set - under-voltage lockout, over-current detection, and thermal shutdown per the product page - guards against stall conditions when a slider hits an end stop. The 5V logic interface connects directly to Arduino, ESP32, and Raspberry Pi Pico controller outputs through optocoupler inputs.
Recommended
Automated Test and Laboratory Positioning
Benchtop lab automation - sample stages, valve actuators, filter wheels - benefits from the TB6600's combination of low cost, adequate 4A capability, and simple 5V STEP/DIR control that any microcontroller or PLC transistor output can generate. The optocoupler isolation on module implementations provides galvanic separation between sensitive instrumentation control electronics and the motor supply domain, per DFRobot's signal-stability description. The driver's thermal shutdown and over-current detection give failsafe behavior for unattended experiments, and the 20 kHz pulse ceiling supports both slow precise indexing and fast repositioning moves. For precision-critical professional instruments, engineers should step up to industrial drivers, since Toshiba marks this drive as unsuitable for professional applications.
Recommended
Small CNC Mill and Engraver Retrofits
Retrofitting older manual mills and engravers with CNC motion is a classic TB6600 use case: one driver per axis, powered from a single 24-36V supply, controlled by a Mach3/GRBL breakout board producing 5V step and direction signals. The 4.0A maximum output covers the common 57BYGH NEMA 23 motors (2.8-4.0A rated) used on benchtop mill conversions, and DIP-switch current matching prevents winding overheating on motors rated below the driver maximum. According to Components101, the TB6600 provides microstepping capability to stepper systems cheaply and effectively, which is exactly the retrofit requirement. Users should budget for heatsinking and verify the 40V module supply ceiling against their transformer rectified voltage.
Recommended
Recommended Products Summary
Engineering reference data for TB6600 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TB6600HG | DM542 | A4988 |
|---|---|---|---|---|
| Brand | Toshiba | Toshiba | Leadshine (system-level equivalent) | Allegro MicroSystems (different class) |
| Package | HZIP25 (IC) / enclosed module | HZIP25 - same | Industrial boxed driver module | QFN-28 (different class) |
| Microstepping | Up to 1/16 step | Up to 1/16 step | Up to 1/128 (per Mermak comparison) | Up to 1/16 |
| Intended Use | Hobby / light-duty (not professional) | Hobby / light-duty | Industrial / production | Compact 3D printer boards |
Key Differentiators
- Lowest cost per amp in its class (vs DM542)
- Optocoupler-isolated signal interface on modules (vs A4988)
- Honest duty-cycle limitation acknowledged (vs DM542)
Design Notes
Budget heatsinking from the outset. At 4A continuous the TB6600HG power stage dissipates several watts; typical modules use their aluminum enclosure as the heatsink and require free airflow. Estimated: a 2 Ohm winding at 4A means roughly 16W of winding power, with driver conduction and switching losses adding a meaningful fraction - if the case exceeds comfortable touch temperature, reduce the DIP current setting or add forced air. Toshiba's integrated TSD protects the die, but repeated trips indicate undersized cooling and will shorten service life.
Respect the 40V module supply ceiling with margin. Estimated: a transformer/SMPS rated 36V DC can exceed 40V unloaded or during regeneration when the motor decelerates, and over-voltage is a common cause of TB6600 driver failure. Choose a supply whose unloaded voltage stays below the limit, and consider a braking resistor or clamp for vertically loaded axes. UVLO prevents misbehavior at low supply, but brown-out during acceleration still causes lost steps.
Set the DIP-switch current to match the motor winding rating before first power-up - running a 1.5A NEMA 17 at a 4A setting overheats the motor quickly. Also beware counterfeit TB6600 modules: community reports (Reddit r/hobbycnc) note many knockoffs use different chips, and older Toshiba TB-series parts had known failure modes. Purchase from authorized distributors such as DigiKey, which lists the genuine TB6600HG. Never hot-plug motor connectors with the supply energized - inductive spikes can destroy the output bridge instantly.
Compliance Information
Compliance details not present in provided web data; consult Toshiba's official TB6600HG product page for environmental compliance documentation.
