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Monolithic Power Systems Inc. MP6600LGR-Z
- Part No.:
- MP6600LGR-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Motor Drivers, Controllers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
MP6600LGR-Z.pdf
- Description:
- 35V, 1.5A STEPPER MOTOR DRIVER W
- Quantity:
- Payment:
- Shipping:
Inventory:5,589
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Product details
Overview
MP6600LGR-Z from Monolithic Power Systems is a 35V, 1.5A bipolar stepper motor driver IC with integrated current sensing, built-in translator, and dual full-bridge output stage. It delivers precise microstepping (full/half/quarter/eighth-step), operates from 4.5V–35V input, features automatic decay mode, and requires no external sense resistors-enabling compact, cost-effective motion control in printers, CNC stages, and lab automation equipment.
For engineers reviewing the MP6600LGR-Z datasheet, MP6600LGR-Z pinout, MP6600LGR-Z application, or MP6600LGR-Z equivalent, key selection criteria include internal current regulation accuracy (±5% at 100% ITRIP), QFN-24 thermal performance (θJA = 42°C/W), ROSC-programmable constant-off-time PWM, fault reporting via open-drain nFAULT, and compatibility with 3.3V/5V logic interfaces.
Technical Context
The MP6600LGR-Z integrates eight N-channel MOSFETs as two independent full-bridge drivers, each rated for 1.5A continuous output current under proper PCB thermal design. Its programmable constant-off-time (COT) PWM control uses internal current sensing to regulate phase current without external resistors, with blanking time (2µs) suppressing switching noise-induced false trips.
Microstep resolution is set by MS1/MS2 logic inputs, enabling four discrete modes (full to eighth-step) with precise DAC-driven current profiles per winding. Fault protection includes over-current (OCP), input over-voltage (OVP), under-voltage lockout (UVLO), and thermal shutdown-all signaled via the open-drain nFAULT pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5V to 35V - supports wide-input industrial and battery-backed motion systems without external regulators. |
| Max Output Current | ±1.5A per bridge - sustained under thermal limits defined by PCB copper area and θJA = 42°C/W. |
| Step Resolution | Full / half / quarter / eighth-step - enables up to 32 microsteps per electrical cycle for smooth low-speed operation. |
| On-Resistance (HS/LS) | 195mΩ HS-FET / 170mΩ LS-FET @ 25°C - reduces conduction loss and self-heating during high-duty-cycle sequencing. |
| Current Regulation Accuracy | ±5% at 71%–100% ITRIP - ensures repeatable torque across temperature and supply variations. |
| Fault Reporting | Open-drain nFAULT - asserts low on OCP/OVP/OTP/UVLO events; requires external pull-up for system-level fault handling. |
| Logic Compatibility | 3.3V and 5V CMOS - eliminates level-shifting for MCU GPIO interfacing in mixed-voltage designs. |
Pinout & Package
MP6600LGR-Z is housed in a thermally enhanced QFN-24 (4mm × 4mm) package with exposed pad (EP) for PCB heat sinking. Pin numbering follows standard top-view orientation with pin 1 marked by dot or chamfered corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIR (Pin 1) | Direction control input | Internal pull-down; rising edge on STEP advances motor clockwise/counterclockwise per DIR state. |
| nFAULT (Pin 2) | Fault indicator output | Open-drain signal pulled low during OCP/OVP/OTP/UVLO; requires external 4.7kΩ pull-up to VIO. |
| ISET (Pin 3) | Current limit programming | Resistor-to-ground sets peak current (e.g., 71kΩ → 1.0A); VISET = 0.9V ±0.1V at regulation point. |
| ROSC (Pin 5) | PWM off-time setting | Resistor-to-ground programs tOFF (e.g., 200kΩ → 23µs typical); determines current ripple and decay behavior. |
| MS1/MS2 (Pins 6–7) | Microstep mode selection | Binary-coded inputs (LL=full, LH=half, HL=quarter, HH=eighth); internal pull-downs default to full-step. |
| AOUT1/AOUT2/BOUT1/BOUT2 (Pins 9,11,21,23) | Bridge A/B output terminals | Direct connection to stepper motor windings; each pair forms one H-bridge leg with 1.5A capability. |
| VIN (Pins 10,22) | Main power input | 4.5V–35V supply; both pins must be shorted and decoupled with ≥100nF ceramic capacitor to GND. |
| nSLEEP (Pin 19) | Low-power sleep enable | Active-high; disables charge pump, gate drivers, and logic; wake-up latency ~1ms before first STEP accepted. |
| ENBL (Pin 18) | Bridge output enable | Active-high; disables H-bridges and ignores STEP while preserving internal state and translator position. |
| VCP/CP1/CP2/VG (Pins 14–17) | Charge pump & gate drive support | Require specific external capacitors (1µF, 100nF, 220nF X7R) to generate boosted gate voltage for N-FETs. |
Key Features
| Feature | Design Value |
|---|---|
| Internal current sensing | Eliminates external sense resistors, reducing BOM count, board space, and power loss in current path. |
| Automatic decay mode | Switches between slow and fast decay dynamically based on winding current vs. ITRIP threshold-optimizing torque and efficiency per step. |
| No auxiliary logic supply required | Derives all internal logic and gate drive voltages from VIN; simplifies power architecture in single-rail systems. |
| Integrated translator | Converts STEP/DIR/MSx signals into precise phase current sequences-removes need for external sequencer or firmware-based stepping logic. |
| Comprehensive protection suite | OCP (6A trip), OVP (37.5V), UVLO (3.6V rise), thermal shutdown (165°C)-ensures robust operation in unattended motion applications. |
Applications
| Printer Paper Feed Control | Lab Automation XYZ Stage |
|---|---|
|
Use Scenario: Precise paper advancement and registration in inkjet and thermal label printers. IC Role / Device Role / Timing Role: Bipolar stepper driver executing microstepped motion commands from MCU; manages bidirectional winding current with real-time decay control. Use Value: Enables sub-millimeter positioning accuracy and silent operation at low speeds using eighth-step mode and automatic decay. |
Use Scenario: High-repeatability linear motion in automated pipetting, slide scanning, or optical alignment systems. IC Role / Device Role / Timing Role: Translator + driver IC converting STEP pulses into controlled phase currents for 1.8° stepper motors. Use Value: Delivers consistent torque across temperature via ±5% current regulation and thermal shutdown-critical for multi-hour unattended runs. |
| CNC Milling Tool Changer | Medical Imaging Sample Carousel |
|
Use Scenario: Indexing rotary tool turret with precise angular positioning and rapid acceleration/deceleration. IC Role / Device Role / Timing Role: Full-bridge driver managing 35V motor supply and 1.5A peak current per phase; handles frequent direction reversals via DIR input. Use Value: With 195mΩ HS-FET RDS(on), minimizes conduction loss during high-duty-cycle indexing-reducing heatsink requirements. |
Use Scenario: Rotating specimen carousel in CT or PET scanners requiring EMI-quiet, jitter-free motion during image acquisition. IC Role / Device Role / Timing Role: Low-noise stepper driver operating in quarter-step mode with ROSC-tuned PWM frequency to suppress audible coil whine. Use Value: Internal current sensing and fixed blanking time (2µs) prevent false OCP triggers from motor inductance transients-ensuring scan continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bipolar stepper motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB6600HG | Higher voltage rating (45V), but requires external current sense resistors and separate logic supply (5V). | Preferred where higher bus voltage (>35V) or legacy 5V logic rails dominate; lacks integrated translator. | Select when system already provides precision shunt-based current feedback and needs >35V operation. |
| DRV8825 | Lower max current (2.2A), same QFN-24 package, but uses external sense resistors and lacks OVP protection. | Suitable for lower-voltage (≤24V), cost-sensitive consumer-grade motion systems with simpler protection needs. | Choose for 24V-only designs where thermal margin allows 2.2A and external sensing is acceptable. |
Compared with TB6600HG and DRV8825, MP6600LGR-Z offers unique integration of internal current sensing, OVP, and translator in a single 35V/1.5A device-reducing component count and layout complexity while maintaining industrial-grade protection.
Availability
MP6600LGR-Z is available at Aetrix Electronics and suitable for printer paper feed mechanisms, lab automation XYZ stages, CNC tool changers, and medical imaging carousels requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MP6600LGR-Z 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, including DC/DC converters, LED drivers, motor drivers, and battery management solutions.
The MP6600L product line delivers highly integrated stepper motor drivers targeting space-constrained, cost-sensitive industrial and commercial motion control applications-emphasizing simplified design, thermal robustness, and comprehensive fault coverage.
FAQ
What is the maximum continuous motor current supported by MP6600LGR-Z?
The MP6600LGR-Z supports up to ±1.5A continuous output current per bridge under specified thermal conditions: 4-layer PCB with 2 oz copper, 1 in² thermal pad area, and ambient temperature ≤25°C. Actual current capability scales inversely with junction temperature and PCB thermal resistance (θJA = 42°C/W).
Does MP6600LGR-Z require external current sense resistors?
No. The MP6600LGR-Z integrates precision current-sense circuitry that monitors motor phase current directly through its internal MOSFETs. This eliminates the need for external sense resistors, reducing BOM cost, board area, and power loss associated with shunt-based sensing.
How is microstepping mode selected on MP6600LGR-Z?
Microstepping mode is selected using the MS1 and MS2 pins: LL = full-step, LH = half-step, HL = quarter-step, HH = eighth-step. Both pins feature internal pull-down resistors, so leaving them unconnected defaults to full-step operation. Logic levels must meet VIH ≥ 2.1V and VIL ≤ 0.8V.
What capacitor values are required for VCP, CP1, CP2, and VG pins?
VCP requires a 1µF, 16V X7R ceramic capacitor to VIN; CP1–CP2 require a 100nF, VIN-rated X7R ceramic capacitor between them; VG requires a 220nF, 16V X7R ceramic capacitor to AGND. All must be placed within 2mm of respective pins with low-inductance routing.
Can MP6600LGR-Z operate from a 3.3V logic supply only?
Yes. MP6600LGR-Z accepts 3.3V or 5V logic inputs (STEP, DIR, ENBL, MS1, MS2, nSLEEP) without level shifting. Its internal logic and gate drivers derive all operating voltages from VIN, so no auxiliary 3.3V/5V supply is needed-simplifying single-rail system design.
What happens when nFAULT goes low?
nFAULT asserts low during OCP, OVP, thermal shutdown, or UVLO events. It remains low until the fault condition clears and VIN is cycled or nSLEEP is toggled. Since nFAULT is open-drain, an external pull-up resistor (typically 4.7kΩ to 3.3V) is required to detect the high-impedance idle state.
Is MP6600LGR-Z RoHS and halogen-free compliant?
Yes. MP6600LGR-Z is lead-free, halogen-free, and fully compliant with the EU RoHS directive. MPS confirms green status on its official website under Quality Assurance documentation, and the QFN-24 package meets JEDEC MO-220 standards.
MP6600LGR-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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 (4)
- Interface:
- On/Off, PWM, Step/Direction
- Technology:
- NMOS
- Step Resolution:
- 1, 1/2, 1/4, 1/8
- Applications:
- Printer
- Current - Output:
- 1.5A
- Voltage - Supply:
- 4.5V ~ 35V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
MP6600LGR-Z FAQ
1.How can I place an order for MP6600LGR-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP6600LGR-Z 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 MP6600LGR-Z reliable?
The price and inventory of MP6600LGR-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6600LGR-Z is usually 5 days.
3.What payment methods are accepted for MP6600LGR-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6600LGR-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP6600LGR-Z?
MP6600LGR-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP6600LGR-Z 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 MP6600LGR-Z?
For technical support, including MP6600LGR-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6600LGR-Z requirements.
6.How does Aetrix verify that MP6600LGR-Z is sourced from the original manufacturer or authorized distributors?
All MP6600LGR-Z 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 MP6600LGR-Z meets industry standards.
7.What is the process for return or replacement of MP6600LGR-Z?
All MP6600LGR-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP6600LGR-Z, 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 MP6600LGR-Z part is unused and in its original packaging.
Return procedure for MP6600LGR-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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