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Melexis Technologies NV MLX90297LLW-ABF-206-SP
- Part No.:
- MLX90297LLW-ABF-206-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MLX90297LLW-ABF-206-SP.pdf
- Description:
- 1-COIL PWM 3.3 18V 680MA CURRENT
- Quantity:
- Payment:
- Shipping:
Inventory:1,904
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Product details
Overview
MLX90297LLW-ABF-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 FG/RD tachometer output for closed-loop speed monitoring in cooling systems.
For engineers reviewing the MLX90297LLW-ABF-206-SP datasheet, pinout, applications, or equivalent options, key selection factors include its AEC-Q100 qualification, DFN10 3×3×1 mm automotive package, RD-type tach output, and resistor-configurable minimum speed and reference voltage.
Technical Context
The MLX90297LLW-ABF-206-SP implements AGC-based commutation control for stable low-noise motor operation across varying magnetic field strengths. Its PWM input accepts duty-cycle commands while Rvref, Rminsp, and R1 externally configure VREF, minimum speed, and speed curve slope.
It integrates overtemperature protection (OTP), current limiting (660 mA), and soft switching to reduce EMI and acoustic noise. The RD (rotational detection) output provides open-drain pulse signal synchronized to rotor position, distinct from FG (frequency generator) variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.3 V to 18 V - supports wide-input 12 V automotive rail with margin for transients |
| Current Limit | 660 mA - protects motor and IC during stall or overload without external sense resistor |
| Speed Curve Options | 10%, 20%, or 30% - selectable via R1 to match thermal response vs. airflow requirements |
| Tach Output Type | RD (Rotational Detection) - open-drain pulse per pole pair, enables precise rotor position feedback |
| ESD Robustness (HBM) | 9 kV - exceeds AEC-Q100-002 requirement for automotive board-level reliability |
| Operating Grade | Automotive - qualified per AEC-Q100 Grade 0 (−40 °C to +150 °C ambient) |
| Motor Power Capability | 7 W - drives mid-power cooling fans in LED headlight and power supply applications |
Pinout & Package
Package: LW - 10-pin DFN (3 mm × 3 mm × 1 mm, 0.5 mm pitch), wettable flank, automotive-qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to 3.3–18 V rail; internal LDO powers logic and Hall sensor |
| GND | Ground reference | Common return for power, logic, and Hall sensor; must be low-impedance |
| PWM | Speed command input | Active-low PWM signal (0–100% duty cycle) sets target fan speed |
| OUT1 / OUT2 | H-bridge outputs | Drive single-coil BLDC motor; complementary switching with soft transition |
| FG/RD | Tachometer output | Open-drain RD signal pulses per rotor pole pair; requires pull-up to VDD |
| VREF | Reference voltage adjust | Configures internal VREF via Rvref (default ~1.25 V); sets speed scaling |
| MINSP | Minimum speed setpoint | Adjusts lowest operational speed via Rminsp; prevents stall at low PWM |
| LRP | Low-RPM detection flag | Open-drain output active when RPM falls below threshold; used for fault reporting |
| OTP | Overtemperature indicator | Open-drain flag asserted during thermal shutdown; latches until reset |
| CLP | Current limit status | Open-drain output active during current limiting event; enables system diagnostics |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40 °C to +150 °C ambient operation in automotive under-hood environments |
| Resistor-configurable speed curve | Three discrete slopes (10%/20%/30%) enable tuning of airflow vs. thermal response |
| Integrated RD tach output | Provides rotor position-synchronized pulses for precise speed regulation and fault detection |
| Soft switching & soft start | Reduces audible noise and EMI by controlling slew rate and ramping startup current |
| Reverse polarity protection support | Enables use with external diode for robustness against battery misconnection in 12 V systems |
Applications
| LED Headlight Cooling | Gaming GPU Cooling |
|---|---|
Use Scenario: Active thermal management of high-brightness LED modules in automotive headlamps where space and acoustic noise are constrained. IC Role / Device Role / Timing Role: Single-coil BLDC fan driver with RD output for closed-loop speed control and stall detection. Use Value: Enables silent, reliable cooling at ambient up to 125 °C while meeting AEC-Q100 requirements. | Use Scenario: Low-noise airflow control for graphics processing units in compact gaming PCs and workstations. IC Role / Device Role / Timing Role: PWM-controlled fan driver with configurable speed curve to match GPU thermal profile. Use Value: Reduces acoustic signature during idle and load transitions without sacrificing cooling performance. |
| Power Supply Fans | Air Purifier Motors |
Use Scenario: Continuous-duty cooling in server PSUs and industrial power supplies requiring high reliability. IC Role / Device Role / Timing Role: Integrated Hall-based commutation driver with OTP and CLP diagnostics for predictive maintenance. Use Value: Eliminates need for external current sense or temperature monitoring circuitry. | Use Scenario: Variable-speed fan control in residential air purifiers where low standby power and quiet operation are critical. IC Role / Device Role / Timing Role: Automotive-grade driver enabling extended lifetime and consistent airflow across filter life cycle. Use Value: Maintains rated CADR despite increasing filter resistance via minimum speed configuration. |
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-206 | FG tach output instead of RD; same 660 mA current limit and DFN10 package | Preferred where frequency-based speed feedback (not position-based) suffices for control loop | Select when system uses FG-compatible monitoring ICs or legacy firmware expects frequency output |
| MLX90297KLW-AAF-109 | 960 mA current limit; FG output; same DFN10 footprint but different thermal pad layout | Suitable for higher-power fans (e.g., chassis or CPU cooling) requiring greater drive capability | Choose when motor current exceeds 660 mA and FG output is acceptable |
Compared with MLX90297LLW-AAF-206 and MLX90297KLW-AAF-109, the MLX90297LLW-ABF-206-SP uniquely delivers RD-based rotor position feedback in an AEC-Q100 automotive DFN10 package with 660 mA current limit-enabling precise stall detection and diagnostic-rich thermal management in space-constrained LED headlamp and power supply designs.
Availability
MLX90297LLW-ABF-206-SP is available at Aetrix Electronics and suitable for LED headlight cooling, gaming GPU thermal management, and power supply fan applications requiring stable component supply, AEC-Q100 compliance, and automotive-grade packaging.
Supply support for MLX90297LLW-ABF-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 fabless semiconductor company specializing in magnetic sensing, infrared thermometry, and intelligent motor control ICs for automotive and industrial markets.
The MLX90297 product line delivers all-in-one single-coil BLDC fan drivers with integrated Hall sensors and AGC commutation-designed specifically for low-noise, high-reliability cooling in automotive lighting, computing, and white goods.
FAQ
What is the tach output type of MLX90297LLW-ABF-206-SP and how does it differ from FG?
The MLX90297LLW-ABF-206-SP features an RD (Rotational Detection) tach output-a synchronized open-drain pulse per rotor pole pair. Unlike FG (Frequency Generator), which outputs a fixed-frequency signal proportional to speed, RD provides phase-aligned timing for precise rotor position tracking. This enables advanced diagnostics like stall detection and commutation alignment in the MLX90297LLW-ABF-206-SP.
Does MLX90297LLW-ABF-206-SP require external components for basic operation?
Yes - MLX90297LLW-ABF-206-SP requires external resistors (Rvref, Rminsp, R1) to configure VREF, minimum speed, and speed curve slope. A decoupling capacitor on VDD and pull-up on RD are also mandatory. No external current sense or flyback diodes are needed due to integrated current limiting and soft switching in the MLX90297LLW-ABF-206-SP.
What is the maximum motor power supported by MLX90297LLW-ABF-206-SP?
The MLX90297LLW-ABF-206-SP supports up to 7 W motor power, validated under typical 12 V supply and ambient conditions. This rating assumes proper PCB thermal design (e.g., 2 oz copper, thermal vias under DFN10 exposed pad) and accounts for internal losses. The 660 mA current limit ensures safe operation within this power envelope for the MLX90297LLW-ABF-206-SP.
Is MLX90297LLW-ABF-206-SP qualified for automotive under-hood use?
Yes - MLX90297LLW-ABF-206-SP is AEC-Q100 Grade 0 qualified (−40 °C to +150 °C ambient), with thermal shutdown (OTP) and 9 kV HBM ESD protection. Its DFN10 LW package is designed for high-reliability mounting in engine bay and headlamp assemblies, making it suitable for direct integration into automotive cooling subsystems using the MLX90297LLW-ABF-206-SP.
How does the soft start function operate in MLX90297LLW-ABF-206-SP?
The MLX90297LLW-ABF-206-SP implements hardware-based soft start that ramps motor current over ~100 ms after PWM enable, preventing inrush spikes and mechanical shock. This behavior is fixed and not user-adjustable. Combined with soft switching, it reduces acoustic noise and EMI during startup - a key feature confirmed in Melexis' application notes for the MLX90297LLW-ABF-206-SP.
MLX90297LLW-ABF-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-ABF-206-SP FAQ
1.How can I place an order for MLX90297LLW-ABF-206-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90297LLW-ABF-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-ABF-206-SP reliable?
The price and inventory of MLX90297LLW-ABF-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-ABF-206-SP is usually 5 days.
3.What payment methods are accepted for MLX90297LLW-ABF-206-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90297LLW-ABF-206-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90297LLW-ABF-206-SP?
MLX90297LLW-ABF-206-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90297LLW-ABF-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-ABF-206-SP?
For technical support, including MLX90297LLW-ABF-206-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90297LLW-ABF-206-SP requirements.
6.How does Aetrix verify that MLX90297LLW-ABF-206-SP is sourced from the original manufacturer or authorized distributors?
All MLX90297LLW-ABF-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-ABF-206-SP meets industry standards.
7.What is the process for return or replacement of MLX90297LLW-ABF-206-SP?
All MLX90297LLW-ABF-206-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90297LLW-ABF-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-ABF-206-SP part is unused and in its original packaging.
Return procedure for MLX90297LLW-ABF-206-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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