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Melexis Technologies NV MLX90297LLW-AAF-206-SP
- Part No.:
- MLX90297LLW-AAF-206-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MLX90297LLW-AAF-206-SP.pdf
- Description:
- IC MOTOR DRIVER 8UTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
MLX90297LLW-AAF-206-SP from Melexis is an automotive-grade, single-coil brushless DC fan driver IC with integrated Hall sensor, configurable speed curve (10%/20%/30%), current limiting (660 mA), soft start/soft switching, and reverse polarity protection via external diode. It operates from 3.3 V to 18 V and supports PWM speed control in low-noise cooling systems such as LED headlight fans and automotive cabin blowers.
For engineers reviewing the MLX90297LLW-AAF-206-SP datasheet, pinout, applications, or equivalent options, key selection criteria include its DFN10 3×3×1 mm automotive package, FG output for tachometer feedback, resistor-configurable minimum speed (Rminsp), VREF pin for reference voltage setting, and AEC-Q100 Grade 0 qualification.
Technical Context
The MLX90297LLW-AAF-206-SP implements AGC-based commutation control for stable, low-noise motor operation across varying magnetic field strengths. Its internal Hall sensor enables precise rotor position detection without external magnets or sensors.
It features a dedicated FG/RD pin supporting either tachometer feedback (FG mode) or rotation detection (RD mode), selectable via ordering code suffix; this unit is configured for FG output. Current limiting is set to 660 mA and enabled by default, with soft start and soft switching reducing EMI and mechanical stress during startup and commutation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.3 V to 18 V - supports direct connection to automotive battery rail with transient tolerance. |
| Current Limit Threshold | 660 mA - factory-trimmed limit prevents overcurrent damage during stall or overload conditions. |
| Speed Curve Options | 10%, 20%, or 30% - selected via external Rvref resistor; defines minimum fan speed vs. PWM duty cycle. |
| ESD Robustness (HBM) | 9 kV - exceeds AEC-Q100-002 requirements for automotive board-level reliability. |
| Operating Temperature | −40 °C to +150 °C - qualified per AEC-Q100 Grade 0 for under-hood applications. |
| Motor Power Capability | 7 W - enables driving mid-power cooling fans (e.g., 12 V, ~500–600 mA load). |
| Output Configuration | Half-bridge (OUT1/OUT2) - drives single-coil BLDC fan with integrated gate drivers and dead-time control. |
Pinout & Package
Package: DFN10 (3 mm × 3 mm × 1 mm, wettable flank), automotive-grade, RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to 3.3–18 V rail; internal LDO powers logic and sensor circuitry. |
| GND | Ground reference | Common return path for power, logic, and motor current sensing. |
| OUT1 / OUT2 | Half-bridge outputs | Drive single-coil BLDC fan; internally controlled with soft switching and cross-conduction prevention. |
| FG/RD | Feedback / Detection output | Open-drain FG signal (2 pulses/rev) for speed monitoring; configured as FG in this variant. |
| PWM | Speed control input | Accepts 1–100 kHz PWM signal; duty cycle maps to fan speed per configured curve. |
| VREF | Reference voltage output | Provides 1.25 V reference for external Rvref resistor to set speed curve slope. |
| MINSP | Minimum speed configuration | Connects to Rminsp resistor to define lowest operational speed (e.g., 10% of max). |
| LRP | Low-RPM detection flag | Open-drain output asserted when fan RPM falls below threshold (e.g., stall detection). |
| OTP | Overtemperature protection flag | Open-drain output asserted during thermal shutdown (>150 °C junction). |
| CLP | Current limit protection flag | Open-drain output asserted when current limit (660 mA) is triggered. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40 °C to +150 °C operation with full automotive reliability testing. |
| Configurable speed curve | Three fixed slopes (10%/20%/30%) set via single external resistor - eliminates firmware tuning. |
| Integrated AGC Hall sensor | Auto-gains Hall signal amplitude to maintain robust commutation across magnet aging and air gap variation. |
| FG tachometer output | Two-pulse-per-revolution open-drain signal synchronized to motor rotation - enables closed-loop speed monitoring. |
| Soft start & soft switching | Gradual voltage ramp and controlled slew rates reduce acoustic noise and EMI during startup and commutation transitions. |
Applications
| LED Headlight Cooling | Automotive Cabin Blower |
|---|---|
Use Scenario: Active thermal management of high-brightness LED modules in headlamp assemblies where space and acoustic noise are constrained. IC Role / Device Role / Timing Role: Single-coil BLDC fan driver with FG feedback for closed-loop speed regulation and stall detection. Use Value: Enables silent, reliable airflow at low speeds (<1,000 RPM) while maintaining 7 W drive capability and AEC-Q100 compliance. | Use Scenario: Low-noise, variable-speed blower motor control in HVAC systems for passenger compartment climate control. IC Role / Device Role / Timing Role: Integrated Hall-based commutation controller with PWM interface and soft-start for smooth airflow ramp-up. Use Value: Eliminates need for external Hall latches or discrete FETs; reduces BOM count and PCB area versus multi-chip solutions. |
| Engine Bay Auxiliary Fans | Electric Power Steering (EPS) Cooling |
Use Scenario: Compact auxiliary cooling for turbochargers, intercoolers, or transmission oil coolers in high-temperature engine bay locations. IC Role / Device Role / Timing Role: High-temp-rated fan driver with OTP and CLP flags for system-level fault reporting and safe shutdown. Use Value: Withstands 150 °C junction temperature and provides real-time thermal/current status via open-drain flags (OTP, CLP, LRP). | Use Scenario: Targeted cooling of EPS motor and inverter electronics during sustained steering assist events. IC Role / Device Role / Timing Role: PWM-controlled, current-limited fan driver with FG feedback for responsive thermal response matching EPS duty cycle. Use Value: 660 mA current limit and soft switching prevent torque ripple and audible whine during intermittent high-load operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-coil BLDC fan driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90297LLW-AAF-109 | Same DFN10 package and FG output, but 960 mA current limit and higher power capability (7 W same). | Better suited for fans requiring >660 mA peak current, e.g., larger diameter or higher static pressure designs. | Select when motor stall current exceeds 660 mA; verify thermal margin with higher I²R loss. |
| MLX90297KLW-AAF-109 | DFN10 package, 960 mA current limit, but industrial/consumer grade (not AEC-Q100 Grade 0). | Lacks automotive qualification; unsuitable for under-hood or safety-critical cooling functions. | Consider only for non-automotive white goods or industrial enclosures with <125 °C ambient. |
Compared with MLX90297LLW-AAF-109 and MLX90297KLW-AAF-109, the MLX90297LLW-AAF-206-SP offers optimized current limiting (660 mA) for thermally constrained automotive zones, retains full AEC-Q100 Grade 0 compliance, and maintains identical footprint and FG functionality - enabling drop-in replacement where lower current limit is acceptable.
Availability
MLX90297LLW-AAF-206-SP is available at Aetrix Electronics and suitable for automotive LED headlight cooling, cabin blower control, and engine bay auxiliary fan applications requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for MLX90297LLW-AAF-206-SP 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
Melexis is a Belgian semiconductor company specializing in intelligent sensor and driver ICs for automotive, industrial, and consumer applications, with core expertise in magnetic sensing and motor control.
The MLX90297 product line delivers all-in-one, Hall-based single-coil BLDC fan drivers targeting low-noise, high-reliability cooling in space-constrained automotive thermal systems - designed specifically for VGA card replacements, LED lighting, and HVAC subsystems.
FAQ
What is the maximum motor power supported by the MLX90297LLW-AAF-206-SP?
The MLX90297LLW-AAF-206-SP supports up to 7 W motor power, verified under typical 12 V supply and continuous operation within its thermal limits. This rating assumes proper PCB copper area for heat dissipation and operation within the −40 °C to +150 °C junction temperature range. The 660 mA current limit ensures safe operation for fans drawing ≤660 mA peak current, making MLX90297LLW-AAF-206-SP suitable for compact, low-acoustic cooling loads.
Does the MLX90297LLW-AAF-206-SP require external components for basic operation?
Yes - the MLX90297LLW-AAF-206-SP requires at minimum a decoupling capacitor on VDD, a pull-up resistor on PWM, and external resistors (Rvref, Rminsp, R1) to configure speed curve, minimum speed, and current limit. No external Hall sensor or FETs are needed, as both are integrated. The MLX90297LLW-AAF-206-SP achieves single-layer PCB compatibility with these minimal discrete parts.
Is the MLX90297LLW-AAF-206-SP pin-compatible with other MLX90297 variants in the LW package?
Yes - all MLX90297 variants in the LW (DFN10 3×3×1 mm) package share identical pinout, including MLX90297LLW-AAF-206-SP, MLX90297LLW-AAF-109, and MLX90297KLW-AAF-109. Differences lie in current limit value, qualification grade (automotive vs. industrial), and FG/RD configuration - all implemented internally without affecting pin assignment or electrical interface.
How does the MLX90297LLW-AAF-206-SP handle reverse polarity conditions?
The MLX90297LLW-AAF-206-SP does not include built-in reverse polarity protection; it requires an external series diode on the VDD line to prevent damage from reversed supply connections. This differs from the MLX90287, which integrates reverse polarity protection. The MLX90297LLW-AAF-206-SP relies on external diode implementation to meet automotive design flexibility and efficiency trade-offs.
What tachometer output format does the MLX90297LLW-AAF-206-SP provide on the FG/RD pin?
The MLX90297LLW-AAF-206-SP configures the FG/RD pin as an open-drain FG (tachometer) output, delivering two pulses per motor revolution synchronized to commutation events. Pulse width and timing are internally generated and stable across temperature and supply voltage. This FG signal is directly compatible with standard microcontroller input capture peripherals for RPM calculation in MLX90297LLW-AAF-206-SP-based systems.
MLX90297LLW-AAF-206-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Not For New Designs
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver
- Output Configuration:
- -
- Interface:
- PWM
- Technology:
- -
- Step Resolution:
- -
- Applications:
- Fan Motor Driver
- Current - Output:
- 600mA
- Voltage - Supply:
- 3.3V ~ 18V
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
MLX90297LLW-AAF-206-SP FAQ
1.How can I place an order for MLX90297LLW-AAF-206-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90297LLW-AAF-206-SP 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 MLX90297LLW-AAF-206-SP reliable?
The price and inventory of MLX90297LLW-AAF-206-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90297LLW-AAF-206-SP is usually 5 days.
3.What payment methods are accepted for MLX90297LLW-AAF-206-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90297LLW-AAF-206-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90297LLW-AAF-206-SP?
MLX90297LLW-AAF-206-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90297LLW-AAF-206-SP 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 MLX90297LLW-AAF-206-SP?
For technical support, including MLX90297LLW-AAF-206-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90297LLW-AAF-206-SP requirements.
6.How does Aetrix verify that MLX90297LLW-AAF-206-SP is sourced from the original manufacturer or authorized distributors?
All MLX90297LLW-AAF-206-SP 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 MLX90297LLW-AAF-206-SP meets industry standards.
7.What is the process for return or replacement of MLX90297LLW-AAF-206-SP?
All MLX90297LLW-AAF-206-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90297LLW-AAF-206-SP, 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 MLX90297LLW-AAF-206-SP part is unused and in its original packaging.
Return procedure for MLX90297LLW-AAF-206-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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