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Melexis Technologies NV MLX90297LLD-SAF-108-RE
- Part No.:
- MLX90297LLD-SAF-108-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
MLX90297LLD-SAF-108-RE.pdf
- Description:
- IC MOTOR DRIVER 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,990
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Product details
Overview
MLX90297LLD-SAF-108-RE from Melexis is a single-coil brushless DC fan driver IC with integrated Hall sensor, AGC-based commutation control, configurable speed curve (10%/20%/30%), current limiting (800 mA), and 3.3–18 V supply range. It targets low-noise cooling in automotive-grade VGA card fans, LED headlight thermal management, and air purifier blowers.
For engineers reviewing the MLX90297LLD-SAF-108-RE datasheet, pinout, applications, or equivalent options, key selection factors include its AEC-Q100 Grade 0 qualification, FG/RD tachometer output option, soft-start/soft-switching behavior, reverse polarity protection via external diode, and resistor-configurable min-speed (Rminsp) and reference voltage (Rvref).
Technical Context
The MLX90297LLD-SAF-108-RE implements closed-loop commutation using an on-chip Hall sensor with automatic gain control (AGC), enabling stable rotation across varying magnetic field strengths. Its PWM input accepts 0–100% duty cycle for speed regulation, while Rvref, Rminsp, and R1 set reference voltage, minimum speed percentage, and speed curve slope respectively.
It integrates OTP (over-temperature protection), CLP (current limit protection), and LRP (lock-rotor protection) with built-in soft-start and soft-switching to reduce acoustic noise and EMI. The device operates from 3.3 V to 18 V and delivers up to 7 W motor power with average fan current under 600 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.3 V to 18 V - supports wide-input 12 V automotive and industrial fan rails without external regulators. |
| Motor Power Capability | 7 W - enables driving larger axial or blower fans in LED headlight and HVAC modules. |
| Current Limit Threshold | 800 mA - programmable over-current protection prevents MOSFET damage during stall or startup. |
| Speed Curve Options | 10%, 20%, or 30% - selectable via R1 to match acoustic/noise requirements of specific fan models. |
| ESD Robustness (HBM) | 9 kV - exceeds AEC-Q100-002 requirement for automotive environments with high static exposure. |
| Tachometer Output | FG mode - open-drain frequency generator output provides 2-pulse-per-revolution feedback for precise RPM monitoring. |
| Operating Grade | AEC-Q100 Grade 0 (−40 °C to +150 °C ambient) - qualified for under-hood and headlamp thermal zones. |
Pinout & Package
MLX90297LLD-SAF-108-RE is housed in a 3 mm × 3 mm × 1 mm DFN10 package with wettable flanks (LLD suffix), optimized for automated optical inspection and high-density PCB layouts in automotive lighting modules.
| 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 Hall sensor bias. |
| PWM | Speed control input | Accepts 0–100% duty-cycle PWM signal; frequency ≥1 kHz recommended. |
| OUT1 / OUT2 | H-bridge motor outputs | Drive single-coil BLDC fan; complementary switching with soft transition to minimize EMI. |
| FG/RD | Configurable tachometer output | In FG mode: open-drain 2-pulse/rev frequency generator; RD mode: open-drain rotor detection flag. |
| VREF | Reference voltage node | Externally biased via Rvref to set internal reference for speed regulation accuracy. |
| MINSP | Minimum speed setting | Resistor divider (Rminsp to GND) configures lowest operational speed as % of max. |
| R1 | Speed curve slope select | Resistor from R1 pin to GND selects 10%/20%/30% linear speed vs. PWM duty response. |
| LRP | Lock-rotor protection status | Open-drain fault indicator asserted when rotor stalls for >1 s. |
| OTP | Over-temperature protection status | Open-drain flag pulled low during thermal shutdown (>150 °C junction). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated AGC Hall sensor | Eliminates need for magnet calibration or external signal conditioning; maintains commutation stability across temperature and air gap variation. |
| Resistor-configurable speed curve | Enables tuning of fan acoustic profile without firmware change-critical for meeting OEM NVH targets in cabin and headlamp systems. |
| Soft start & soft switching | Reduces inrush current and torque ripple, lowering mechanical stress on fan bearings and audible "click" at startup. |
| AEC-Q100 Grade 0 qualification | Validated for continuous operation at 150 °C ambient-suitable for placement near LED heat sinks in automotive headlamps. |
| FG tachometer output | Provides deterministic 2-pulse/rev timing signal compatible with standard microcontroller input capture peripherals for closed-loop speed control. |
Applications
| Gaming PC VGA Cooling | Automotive LED Headlight Fan |
|---|---|
Use Scenario: High-performance GPU cooling requiring ultra-low acoustic noise under variable load. IC Role / Device Role / Timing Role: Single-coil BLDC fan driver with AGC Hall sensing and PWM-controlled speed regulation. Use Value: Configurable 10% speed curve minimizes low-RPM turbulence noise while maintaining thermal margin at idle. | Use Scenario: Thermal management of high-power LED arrays in adaptive front-lighting systems (AFS). IC Role / Device Role / Timing Role: AEC-Q100-qualified fan controller delivering 7 W drive capability in compact DFN10 package. Use Value: 9 kV HBM ESD rating and −40 °C to +150 °C operation ensure reliability in harsh under-hood environments. |
| Home Appliance Air Purifier | Industrial Power Supply Fan |
Use Scenario: Continuous-duty blower in HEPA-filtered air purification units requiring quiet operation at night. IC Role / Device Role / Timing Role: Low-noise commutation driver with soft-start and configurable min-speed (Rminsp). Use Value: 20% speed curve option balances airflow consistency and acoustic comfort across filter clogging lifecycle. | Use Scenario: Forced-air cooling of high-efficiency AC/DC power supplies in telecom and server infrastructure. IC Role / Device Role / Timing Role: Robust 12 V fan driver with current limiting (800 mA) and lock-rotor protection (LRP). Use Value: CLP and LRP prevent catastrophic failure during dust accumulation or bearing wear, extending system MTBF. |
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 |
|---|---|---|---|
| MLX90297KLW-AAF-109 | Same die, DFN10 3×3×1 package but Industrial grade (−40 °C to +125 °C), FG output, 960 mA current limit. | Not AEC-Q100 qualified; unsuitable for automotive under-hood use. | Select when cost-sensitive industrial cooling requires higher current limit and no automotive qualification. |
| MLX90297LLW-ABF-206 | Same automotive grade, DFN10 package, RD (rotor detect) output instead of FG, 660 mA current limit. | Lacks tachometer feedback; used where only stall detection-not RPM monitoring-is required. | Select when rotor presence verification suffices and lower current limit aligns with smaller fan loads. |
Compared with MLX90297KLW-AAF-109 and MLX90297LLW-ABF-206, the MLX90297LLD-SAF-108-RE uniquely combines AEC-Q100 Grade 0 qualification, FG tachometer output, and 800 mA current limit in a wettable-flank DFN10 package-making it optimal for space-constrained, safety-critical automotive thermal management where RPM feedback and high-temp reliability are mandatory.
Availability
MLX90297LLD-SAF-108-RE is available at Aetrix Electronics and suitable for automotive LED headlight cooling, gaming GPU thermal management, and industrial power supply fan control requiring stable component supply across long production lifecycles.
Supply support for MLX90297LLD-SAF-108-RE 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 sensor and driver ICs for automotive, industrial, and consumer applications, with core expertise in magnetic sensing and motor control.
The MLX90297 family is designed specifically for robust, low-noise single-coil BLDC fan control in thermally demanding environments-including automotive lighting, computing, and white goods-leveraging AGC Hall technology and resistor-programmable dynamics.
FAQ
What is the operating temperature range for MLX90297LLD-SAF-108-RE?
The MLX90297LLD-SAF-108-RE is qualified to AEC-Q100 Grade 0, supporting continuous operation from −40 °C to +150 °C ambient temperature. This makes it suitable for placement directly on LED headlamp PCBs where localized heating exceeds 125 °C. The device's thermal shutdown (OTP) activates at ~150 °C junction temperature to protect against sustained overtemperature conditions.
Does MLX90297LLD-SAF-108-RE support both FG and RD tachometer modes?
No-MLX90297LLD-SAF-108-RE is configured exclusively for FG (frequency generator) mode, providing a 2-pulse-per-revolution open-drain output for RPM measurement. The RD (rotor detection) mode is implemented in variants like MLX90297LLW-ABF-206. Pin FG/RD on MLX90297LLD-SAF-108-RE functions only as FG; no mode-select resistor or configuration is supported.
How is the speed curve configured on MLX90297LLD-SAF-108-RE?
The speed curve on MLX90297LLD-SAF-108-RE is set by connecting a resistor (R1) between the R1 pin and GND. A 10 kΩ resistor selects 10% slope, 5.1 kΩ selects 20%, and 3.3 kΩ selects 30%. This defines how fan speed changes linearly with PWM duty cycle-enabling optimization for acoustic performance versus airflow linearity in each target application.
What protection features does MLX90297LLD-SAF-108-RE include?
MLX90297LLD-SAF-108-RE integrates lock-rotor protection (LRP), over-temperature protection (OTP), and current-limit protection (CLP). LRP asserts after 1 second of stalled rotor; OTP disables outputs above ~150 °C junction; CLP limits peak current to 800 mA. All protections feature auto-recovery once fault condition clears, ensuring robust unattended operation in sealed enclosures.
Is MLX90297LLD-SAF-108-RE pin-compatible with other MLX90297 variants?
Yes-MLX90297LLD-SAF-108-RE shares identical pinout and footprint with all DFN10-packaged MLX90297 variants (e.g., MLX90297LLW-ABF-206, MLX90297KLW-AAF-109), including VDD, GND, PWM, OUT1, OUT2, FG/RD, VREF, MINSP, R1, LRP, and OTP pins. This allows layout reuse across automotive and industrial versions when board space and thermal constraints permit.
MLX90297LLD-SAF-108-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 8-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 8-UTDFN (2.5x2)
MLX90297LLD-SAF-108-RE FAQ
1.How can I place an order for MLX90297LLD-SAF-108-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90297LLD-SAF-108-RE 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 MLX90297LLD-SAF-108-RE reliable?
The price and inventory of MLX90297LLD-SAF-108-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90297LLD-SAF-108-RE is usually 5 days.
3.What payment methods are accepted for MLX90297LLD-SAF-108-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90297LLD-SAF-108-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90297LLD-SAF-108-RE?
MLX90297LLD-SAF-108-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90297LLD-SAF-108-RE 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 MLX90297LLD-SAF-108-RE?
For technical support, including MLX90297LLD-SAF-108-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90297LLD-SAF-108-RE requirements.
6.How does Aetrix verify that MLX90297LLD-SAF-108-RE is sourced from the original manufacturer or authorized distributors?
All MLX90297LLD-SAF-108-RE 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 MLX90297LLD-SAF-108-RE meets industry standards.
7.What is the process for return or replacement of MLX90297LLD-SAF-108-RE?
All MLX90297LLD-SAF-108-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90297LLD-SAF-108-RE, 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 MLX90297LLD-SAF-108-RE part is unused and in its original packaging.
Return procedure for MLX90297LLD-SAF-108-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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