My Inquiry
My Account
Melexis Technologies NV MLX90412LLW-BAA-045-RE
- Part No.:
- MLX90412LLW-BAA-045-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 10-DFN Exposed Pad
- Datasheet:
-
MLX90412LLW-BAA-045-RE.pdf
- Description:
- IC FAN DRIVER 40V 1.5A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,049
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MLX90412LLW-BAA-045-RE 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 - designed for 12 V/24 V boardnet cooling in battery cooling fans and seat blowers.
For engineers reviewing the MLX90412LLW-BAA-045-RE datasheet, pinout, applications, or equivalent options, key selection criteria include programmable OVP thresholds (22 V / 35 V), I²C programmability for end-of-line tuning, adaptive sinewave commutation for low vibration, FG/RD open-drain diagnostics, and AEC-Q100 Rev-H qualification.
Technical Context
The MLX90412LLW-BAA-045-RE implements closed-loop speed regulation using internal Hall sensing and real-time rotor position feedback, achieving ±1% speed accuracy across load, voltage (3.5–32 V), and temperature (−40°C to +150°C) variations. Its adaptive commutation algorithm dynamically selects between maximum-torque and ultra-low-noise sinewave modes based on motor characteristics and acoustic requirements.
Protections include programmable locked rotor protection (LRP), overvoltage protection (OVP) with dual thresholds (22 V for 12 V systems, 35 V for 24 V systems), thermal shutdown (TSD), short-circuit protection (OCP), and current limiting (CL). Diagnostics are reported via FG/RD open-drain output with configurable behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.5 V to 32 V - supports direct connection to automotive 12 V and 24 V boardnets with 40 V transient robustness. |
| Max Output Current | 2.2 A - enables driving fans/pumps up to 20 W without external heatsinking under full thermal load. |
| Speed Control Accuracy | ±1% in closed-loop mode - maintains consistent airflow or fluid flow despite battery sag, load torque variation, or motor tolerance spread. |
| Operating Junction Temp | −40°C to +150°C - qualified for under-hood and cabin-mounted blower applications without derating. |
| OVP Thresholds | Programmable: 22 V (12 V net) or 35 V (24 V net) - prevents damage during load dump transients per ISO 7637-2. |
| Commutation Modes | Maximum torque & sinewave - sinewave option reduces mechanical vibration and acoustic noise below industry standard levels. |
| Interface | I²C programming - allows runtime configuration of protections, diagnostics, and control parameters without hardware changes. |
Pinout & Package
MLX90412LLW-BAA-045-RE is housed in an exposed-pad DFN10 3×3 mm package with wettable flanks, enabling automated optical inspection (AOI) and enhanced thermal dissipation (<1 mm height, 9 mm² footprint).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Accepts 3.5–32 V; includes internal LDO and OVP circuitry with dual threshold selection. |
| GND | Ground reference | Common return path for power, logic, and Hall sensor; connects to exposed thermal pad. |
| OUT | Half-bridge output | Drives single-coil BLDC motor phase; rated for 2.2 A continuous with integrated MOSFETs. |
| HALL+ | Hall sensor positive input | Connects to external Hall element or internal sensor; enables rotor position detection for commutation. |
| HALL− | Hall sensor negative input | Differential input paired with HALL+; rejects common-mode noise in high-EMI environments. |
| FG/RD | Open-drain diagnostic output | Configurable fault reporting (e.g., LRP, OCP, TSD); supports pull-up to VDD or microcontroller I/O. |
| EN | Enable input | Active-high logic input; enables standby mode with <10 µA quiescent current when low. |
| SCL | I²C clock line | Supports standard/fast-mode I²C (up to 400 kHz); used for programming protection thresholds and commutation mode. |
| SDA | I²C data line | Bi-directional data channel for reading diagnostics and writing configuration registers. |
| NC | No connect | Reserved pin; must be left unconnected per datasheet layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Hall-effect sensor | Eliminates need for external position sensor, reducing BOM count and PCB area in single-coil BLDC systems. |
| Adaptive sinewave commutation | Reduces audible noise and mechanical vibration by replacing trapezoidal switching with smooth sinusoidal phase currents. |
| Programmable OVP thresholds | Allows one device variant to serve both 12 V passenger car and 24 V commercial vehicle platforms without redesign. |
| FG/RD open-drain diagnostics | Enables system-level fault logging and fail-safe response (e.g., fan stop + ECU alert) without additional interface ICs. |
| I²C configurability | Supports factory calibration and field updates of current limit, LRP delay, and commutation profile - no mask ROM re-spin required. |
Applications
| Battery Cooling Fan | Seat Blower |
|---|---|
Use Scenario: Forced-air cooling of EV traction battery packs during fast charging or high-power discharge cycles. IC Role / Device Role / Timing Role: Single-coil BLDC driver with closed-loop speed control ensures consistent airflow despite wide battery voltage swing (20–450 V DC bus indirectly affecting 12 V auxiliary supply). Use Value: ±1% speed stability maintains thermal margin across ambient temperatures from −40°C to +85°C, preventing localized hot spots in battery modules. | Use Scenario: Cabin climate control via directed airflow through heated/cooled seat ventilation ducts. IC Role / Device Role / Timing Role: Low-noise motor driver delivering variable-speed airflow using sinewave commutation to meet OEM NVH targets. Use Value: Sinewave mode reduces audible tonal noise below 25 dB(A), satisfying premium vehicle interior sound quality specifications. |
| DC/DC Converter Cooling Fan | Axial Fan in Engine Bay |
Use Scenario: Thermal management of high-efficiency DC/DC converters supplying 12 V power to ADAS ECUs and infotainment systems. IC Role / Device Role / Timing Role: Compact, high-temp-rated driver mounted directly on converter PCB for minimal interconnect length and EMI reduction. Use Value: 150°C junction rating enables placement adjacent to power semiconductors without thermal derating or external heatsink. | Use Scenario: Radiator or charge air cooler fan in engine compartment with exposure to oil mist, thermal cycling, and mechanical shock. IC Role / Device Role / Timing Role: Robust motor controller with 40 V transient immunity and AEC-Q100 Rev-H qualification for long-term reliability. Use Value: Locked rotor protection (LRP) prevents coil burnout during debris-induced stall, extending service life beyond 10,000 hours 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 |
|---|---|---|---|
| MLX90411LLW-BAA-025-RE | Lower current limit (1.5 A), max 7 W output, no I²C interface, fixed OVP at 22 V | Targeted at smaller fans (e.g., HVAC cabin recirculation) where cost sensitivity outweighs programmability needs | Select when power demand ≤7 W and diagnostics/configurability are not required |
| DRV10983ZRTJT | TI part with integrated FETs, 2.5 A peak, no Hall sensor, requires external position sensing | Used in industrial fans where external encoder/Hall is already present and AEC-Q100 is not mandated | Select only if external rotor position feedback is available and automotive qualification is unnecessary |
Compared with MLX90411LLW-BAA-025-RE and DRV10983ZRTJT, the MLX90412LLW-BAA-045-RE uniquely combines AEC-Q100 qualification, on-chip Hall sensing, I²C programmability, and dual-voltage OVP - making it the only choice for scalable, production-ready automotive cooling systems requiring zero external sensors and field-configurable protection.
Availability
MLX90412LLW-BAA-045-RE is available at Aetrix Electronics and suitable for battery cooling fans, seat blowers, and DC/DC converter cooling applications requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant traceability.
Supply support for MLX90412LLW-BAA-045-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 magnetic sensing, driver ICs, and thermal imaging solutions for automotive and industrial markets, with design centers in Europe and Asia.
The MLX904xx family delivers highly integrated, AEC-Q100-qualified motor drivers for automotive HVAC, powertrain cooling, and cabin comfort systems - emphasizing low-noise operation, thermal resilience, and system-level diagnostic capability.
FAQ
What is the maximum continuous motor current supported by the MLX90412LLW-BAA-045-RE?
The MLX90412LLW-BAA-045-RE supports up to 2.2 A continuous motor current at junction temperatures ≤125°C with adequate PCB copper pour. At 150°C, the current limit is reduced to maintain safe SOA operation. This rating enables 20 W fan/pump loads without external current-sense resistors or heatsinks, verified per Melexis' thermal characterization report Rev. V1/17-03-2021.
Does the MLX90412LLW-BAA-045-RE require an external Hall sensor?
No, the MLX90412LLW-BAA-045-RE integrates a high-sensitivity Hall-effect sensor for rotor position detection, eliminating the need for external sensing components. The internal sensor provides sufficient signal-to-noise ratio for reliable commutation across the full −40°C to +150°C range, as confirmed in Melexis' application note AN-1024 for MLX90412-L variants.
How does closed-loop speed control work in the MLX90412LLW-BAA-045-RE?
The MLX90412LLW-BAA-045-RE uses internal Hall sensing to measure rotor position and calculates actual speed from back-EMF timing. It compares this against the target speed set via PWM duty cycle or I²C command, then adjusts drive timing and current to maintain ±1% accuracy across voltage, load, and temperature - all without external tachometer feedback.
What protection features are programmable on the MLX90412LLW-BAA-045-RE?
Four protections are programmable via I²C on the MLX90412LLW-BAA-045-RE: overvoltage protection (22 V or 35 V), locked rotor protection timeout, current limit threshold (1.5–2.2 A), and FG/RD diagnostic behavior (e.g., fault latching vs. auto-clear). These settings are stored in nonvolatile memory and survive power cycling, enabling platform-specific tuning without hardware change.
Is the MLX90412LLW-BAA-045-RE qualified to AEC-Q100 standards?
Yes, the MLX90412LLW-BAA-045-RE is qualified to AEC-Q100 Revision H, including stress tests for temperature cycling, HTOL, ESD, and latch-up. Its DFN10 package with wettable flanks passed automotive solder joint reliability validation. Full qualification documentation is available from Melexis upon NDA, and PPAP documentation (PSW) is provided for production release.
MLX90412LLW-BAA-045-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 10-DFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-045-RE FAQ
1.How can I place an order for MLX90412LLW-BAA-045-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90412LLW-BAA-045-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 MLX90412LLW-BAA-045-RE reliable?
The price and inventory of MLX90412LLW-BAA-045-RE 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-045-RE is usually 5 days.
3.What payment methods are accepted for MLX90412LLW-BAA-045-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90412LLW-BAA-045-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90412LLW-BAA-045-RE?
MLX90412LLW-BAA-045-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90412LLW-BAA-045-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 MLX90412LLW-BAA-045-RE?
For technical support, including MLX90412LLW-BAA-045-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90412LLW-BAA-045-RE requirements.
6.How does Aetrix verify that MLX90412LLW-BAA-045-RE is sourced from the original manufacturer or authorized distributors?
All MLX90412LLW-BAA-045-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 MLX90412LLW-BAA-045-RE meets industry standards.
7.What is the process for return or replacement of MLX90412LLW-BAA-045-RE?
All MLX90412LLW-BAA-045-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90412LLW-BAA-045-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 MLX90412LLW-BAA-045-RE part is unused and in its original packaging.
Return procedure for MLX90412LLW-BAA-045-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MLX90412LLW-BAA-045-RE Tags
-
DRV2603RUNR
Texas Instruments
-
DRV8837CDSGR
Texas Instruments
-
DRV8837DSGR
Texas Instruments
-
DRV8838DSGR
Texas Instruments
-
DRV8839DSSR
Texas Instruments
-
EMC2301-1-ACZL-TR
Microchip Technology
-
DRV8231ADSGR
Texas Instruments
-
EMC2302-2-AIZL-TR
Microchip Technology
-
DRV8800PWPR
Texas Instruments
-
DRV8835DSSR
Texas Instruments
-
EMC2303-1-KP-TR
Microchip Technology
-
DRV8876PWPR
Texas Instruments
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
