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Melexis Technologies NV MLX90412LLW-BAA-042-SP
- Part No.:
- MLX90412LLW-BAA-042-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 10-DFN Exposed Pad
- Datasheet:
-
MLX90412LLW-BAA-042-SP.pdf
- Description:
- IC FAN DRIVER 40V 2.2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,225
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Product details
Overview
MLX90412LLW-BAA-042-SP from Melexis is an automotive-grade single-coil brushless DC fan and pump driver IC with integrated high-sensitivity Hall-effect sensor, 2.2 A current limit, closed-loop speed control (±1%), and operation from 3.5 V to 32 V supply at junction temperatures up to 150°C - deployed in seat blowers and battery cooling fans.
For engineers reviewing the MLX90412LLW-BAA-042-SP datasheet, pinout, applications, or equivalent options, key selection criteria include programmable overvoltage protection thresholds (22 V / 35 V), I²C programming capability for end-of-line tuning, and adaptive sinewave commutation for low-vibration motor control.
Technical Context
The MLX90412LLW-BAA-042-SP implements closed-loop speed regulation using internal Hall feedback and supports both open-loop and closed-loop modes with ±1% speed accuracy across load, voltage, and temperature variations. It integrates programmable protections including locked rotor detection, thermal shutdown, and overcurrent limiting.
Commutation is adaptive and configurable via I²C: options include maximum torque mode and sinewave mode for ultra-low acoustic noise and vibration. The FG/RD diagnostic output provides open-drain status reporting with programmable fault mapping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.5 V to 32 V - supports direct connection to 12 V and 24 V automotive boardnets with 40 V transient robustness. |
| Max Motor Current | 2.2 A - enables driving up to 20 W fan/pump loads without external current sensing or heatsinking. |
| Speed Control Accuracy | ±1% in closed-loop mode - maintains consistent airflow/pressure despite battery sag, load shifts, or production tolerances. |
| Junction Temp Range | −40°C to +150°C - qualified for under-hood and cabin-mounted automotive locations per AEC-Q100 Rev H. |
| OVP Thresholds | Programmable: 22 V (12 V net) or 35 V (24 V net) - prevents damage during load dump transients. |
| Package | DFN10 3×3 mm with wettable flanks - enables automated optical solder inspection and <1 mm profile for space-constrained modules. |
Pinout & Package
MLX90412LLW-BAA-042-SP uses an exposed-pad DFN10 (3 mm × 3 mm, 0.75 mm height) package with wettable flanks for AOI-compatible assembly. Thermal pad is electrically connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to 3.5–32 V boardnet; internal LDO powers logic and sensor. |
| GND | Ground reference | Common return for power, logic, and thermal pad; must be low-impedance. |
| OUTP / OUTN | H-bridge motor outputs | Drive single-coil BLDC motor; support PWM-controlled phase switching. |
| FG/RD | Open-drain diagnostic output | Reports faults (OCP, TSD, LRP) or rotational speed; programmable via I²C. |
| SCL / SDA | I²C interface pins | Enable real-time configuration of OVP, CL, commutation mode, and standby behavior. |
| EN | Enable input | Active-high logic control for standby mode; reduces quiescent current to <100 µA. |
| VM | Motor voltage sense | Monitors back-EMF for commutation timing and speed calculation in closed-loop mode. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Hall-effect sensor | Eliminates need for external rotor position sensors - reduces BOM count and PCB area in single-coil BLDC systems. |
| Adaptive sinewave commutation | Reduces mechanical vibration and audible noise below industry-standard thresholds for cabin-mounted blowers. |
| Programmable locked rotor protection | Detects stalled motor within 500 ms and shuts down outputs - prevents coil overheating and system failure. |
| I²C programmability | Enables field calibration and end-of-line tuning without hardware changes - accelerates validation for multiple fan variants. |
| AEC-Q100 Rev H qualification | Validated for automotive use including HTOL, TC, ESD, and EMC testing - supports PPAP compliance for Tier-1 suppliers. |
Applications
| Seat Blower Control | Battery Cooling Fan |
|---|---|
Use Scenario: Climate-controlled vehicle seating with adjustable airflow intensity and silent operation. IC Role / Device Role / Timing Role: Single-chip BLDC driver providing closed-loop speed control and Hall-based commutation for 12 V axial fans. Use Value: ±1% speed stability ensures consistent thermal comfort; sinewave mode meets OEM NVH targets (<35 dB(A)). | Use Scenario: Active thermal management of EV traction battery packs during fast charging or high-load discharge. IC Role / Device Role / Timing Role: High-reliability pump/fan driver regulating coolant flow or air volume based on battery temperature feedback. Use Value: 150°C junction rating allows placement near battery modules; programmable OVP protects against 24 V truck net transients. |
| Air Suspension Pump | DC/DC Converter Cooling |
Use Scenario: On-demand pressurization of air springs in premium chassis systems requiring rapid response and low acoustic signature. IC Role / Device Role / Timing Role: Low-noise, high-torque BLDC driver controlling radial blower motor with adaptive commutation. Use Value: Maximum torque mode delivers >90% stall torque at startup; LRP prevents coil burnout during pressure build-up. | Use Scenario: Forced-air cooling of high-efficiency DC/DC converters in ADAS domain controllers and infotainment power supplies. IC Role / Device Role / Timing Role: Compact, thermally robust fan driver mounted directly on converter module PCB. Use Value: DFN10 package (9 mm², <1 mm height) fits tight spacing constraints; 32 V max supply accommodates wide-input DC/DC rails. |
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 |
|---|---|---|---|
| MLX90411LLW-BAA-022-SP | Lower current limit (1.5 A), max 7 W output, no sinewave commutation option. | Targeted at smaller axial fans (<10 W); lacks adaptive low-noise mode. | Select when cost sensitivity outweighs acoustic performance requirements and power demand stays below 7 W. |
| TB9058FNG | Standalone gate driver (no integrated Hall sensor); requires external position sensing and MCU control. | Used in custom multi-phase or higher-power (>25 W) designs where flexibility outweighs integration. | Choose only if existing architecture already includes MCU-based commutation and external rotor sensing. |
Compared with MLX90412LLW-BAA-042-SP, the MLX90411 variant trades acoustic optimization and 20 W capability for lower cost and simpler configuration, while the TB9058FNG shifts complexity to the host controller - making MLX90412LLW-BAA-042-SP optimal for drop-in, space-constrained, low-NVH automotive fan modules.
Availability
MLX90412LLW-BAA-042-SP is available at Aetrix Electronics and suitable for seat blowers, battery cooling fans, and air suspension pumps requiring stable component supply across automotive production lifecycles.
Supply support for MLX90412LLW-BAA-042-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 magnetic sensing, driver ICs, and thermal imaging solutions for automotive and industrial markets.
The MLX90412 product line delivers highly integrated, AEC-Q100-qualified BLDC drivers targeting low-noise, high-reliability cooling and actuation in passenger vehicles and commercial trucks.
FAQ
What is the maximum continuous motor current supported by the MLX90412LLW-BAA-042-SP?
The MLX90412LLW-BAA-042-SP supports a maximum continuous motor current of 2.2 A, enabling safe operation of up to 20 W BLDC loads without external current limiting. This rating is validated across the full −40°C to +150°C junction temperature range and includes built-in current limit protection that activates before thermal derating occurs.
Does the MLX90412LLW-BAA-042-SP require an external microcontroller to operate?
No, the MLX90412LLW-BAA-042-SP operates autonomously with integrated Hall-effect sensing and on-chip commutation logic. While it supports optional I²C programming for advanced tuning, basic open-loop or closed-loop speed control functions without any external MCU - making it ideal for cost-sensitive, single-function fan modules.
How does the MLX90412LLW-BAA-042-SP handle overvoltage events on the 12 V boardnet?
The MLX90412LLW-BAA-042-SP features programmable overvoltage protection set to 22 V for 12 V automotive networks. When triggered, it disables motor outputs and asserts fault status on the FG/RD pin. This threshold is factory-configured for MLX90412LLW-BAA-042-SP and complies with ISO 7637-2 pulse 5a load-dump immunity requirements.
Can the MLX90412LLW-BAA-042-SP drive a three-phase BLDC motor?
No, the MLX90412LLW-BAA-042-SP is specifically designed for single-coil (two-terminal) BLDC motors - such as those used in axial fans, cross-blowers, and small air pumps. It lacks the three-phase gate drive architecture and associated timing logic required for conventional three-phase commutation.
What diagnostic capabilities does the MLX90412LLW-BAA-042-SP provide through its FG/RD pin?
The FG/RD pin on the MLX90412LLW-BAA-042-SP serves as a programmable open-drain diagnostic output. It can report rotational speed (FG mode) or encode fault conditions (RD mode), including overcurrent, thermal shutdown, locked rotor, and overvoltage events - all configurable via I²C to match system-level monitoring requirements.
MLX90412LLW-BAA-042-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 10-DFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- -
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- -
- Interface:
- I2C, PWM
- Technology:
- -
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- 2.2A
- Voltage - Supply:
- 3.5V ~ 32V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 10-DFN (3x3)
MLX90412LLW-BAA-042-SP FAQ
1.How can I place an order for MLX90412LLW-BAA-042-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90412LLW-BAA-042-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 MLX90412LLW-BAA-042-SP reliable?
The price and inventory of MLX90412LLW-BAA-042-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90412LLW-BAA-042-SP is usually 5 days.
3.What payment methods are accepted for MLX90412LLW-BAA-042-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90412LLW-BAA-042-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90412LLW-BAA-042-SP?
MLX90412LLW-BAA-042-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90412LLW-BAA-042-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 MLX90412LLW-BAA-042-SP?
For technical support, including MLX90412LLW-BAA-042-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90412LLW-BAA-042-SP requirements.
6.How does Aetrix verify that MLX90412LLW-BAA-042-SP is sourced from the original manufacturer or authorized distributors?
All MLX90412LLW-BAA-042-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 MLX90412LLW-BAA-042-SP meets industry standards.
7.What is the process for return or replacement of MLX90412LLW-BAA-042-SP?
All MLX90412LLW-BAA-042-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90412LLW-BAA-042-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 MLX90412LLW-BAA-042-SP part is unused and in its original packaging.
Return procedure for MLX90412LLW-BAA-042-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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