My Inquiry
My Account
Melexis Technologies NV MLX90297KZC-ABF-108-SP
- Part No.:
- MLX90297KZC-ABF-108-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Motor Drivers, Controllers
- Package:
- 8-SMD, Flat Leads
- Datasheet:
-
MLX90297KZC-ABF-108-SP.pdf
- Description:
- IC MOTOR DRIVER 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,042
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MLX90297KZC-ABF-108-SP from Melexis is a single-coil brushless DC fan driver IC with integrated Hall sensor, configurable speed curve (10%/20%/30%), 800 mA current limiting, reverse polarity protection via external diode, and 3.3–18 V supply range. It delivers 7 W motor power for low-noise cooling in VGA card fans and white goods.
For engineers reviewing the MLX90297KZC-ABF-108-SP datasheet, pinout, applications, or equivalent options, key selection factors include RD output mode, resistor-configurable minimum speed (Rminsp), soft start/soft switching behavior, AEC-Q100 qualification, and SOIC8 package compatibility with single-layer PCB layouts.
Technical Context
The MLX90297KZC-ABF-108-SP implements AGC-based commutation control to maintain stable rotation across varying magnetic field strengths, enabling consistent low-noise operation. Its PWM input accepts variable duty cycle signals to regulate fan speed while internal logic adapts timing based on Rvref, Rminsp, and R1 configuration resistors.
It integrates thermal shutdown (OTP), current limiting (CLP), and lock-rotor protection (LRP) with dedicated FG/RD output - here configured as RD (Rotor Detection) for stall detection rather than tachometer feedback. The SOIC8 package supports industrial/consumer-grade operation from −40 °C to +125 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V to 18 V - enables direct integration with 3.3 V logic systems and 12 V fan rails without level-shifting. |
| Current Limit | 800 mA - protects motor windings and PCB traces during startup or stall conditions. |
| Output Mode | RD (Rotor Detection) - provides digital stall indication instead of tachometer signal, simplifying fault monitoring. |
| Speed Curve Options | 10%, 20%, or 30% - set by external R1 resistor to tailor torque-speed response for acoustic or thermal requirements. |
| ESD Robustness | 9 kV HBM - exceeds AEC-Q100-002 for reliable handling in manufacturing and end-use environments. |
| Motor Power | 7 W - supports higher airflow fans than MLX90287 (5 W), suitable for demanding thermal loads. |
| Soft Start | Enabled - reduces inrush current and audible coil whine at power-on. |
Pinout & Package
Package: ZC - Straight-leads SOIC8, RoHS-compliant, 150 mil body width, standard footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Connects to 3.3–18 V rail; decoupling capacitor required near pin. |
| GND | Ground reference | Common return path for power, logic, and output stages. |
| PWM | Speed control input | Accepts 0–100% duty cycle PWM signal; frequency ≥1 kHz recommended. |
| OUT1 / OUT2 | H-bridge outputs | Drive single-coil BLDC motor; complementary switching with soft transition. |
| FG/RD | Function-selectable output | Configured as RD (open-drain rotor detection) for stall sensing in this variant. |
| VREF | Reference voltage output | Provides 1.25 V reference for external Rvref resistor to set VREF-based thresholds. |
| MINSP | Minimum speed setting | Connects to Rminsp resistor to define lowest operational speed (e.g., 10% curve). |
| LRP | Lock-rotor protection enable | Pulled high internally; external pull-down disables LRP if needed. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for industrial/consumer applications up to +125 °C ambient, supporting automotive-adjacent reliability requirements. |
| Resistor-configurable speed curve | Three discrete curves (10%/20%/30%) selected by R1 value, enabling acoustic optimization without firmware changes. |
| Integrated soft switching | Reduces EMI and audible noise by controlling slew rate of H-bridge transitions. |
| Single-layer PCB support | SOIC8 layout and minimal external components allow cost-effective, space-constrained board designs. |
| Reverse polarity protection | Requires only external diode - no internal FET, preserving efficiency while preventing damage from miswiring. |
Applications
| Gaming GPU Cooling | Refrigerator Evaporator Fan |
|---|---|
Use Scenario: High-performance graphics cards requiring silent, responsive fan control under dynamic thermal load. IC Role / Device Role / Timing Role: Single-coil BLDC driver with AGC-commutation and RD-based stall detection. Use Value: Enables 7 W motor drive with 10%/20%/30% selectable speed curves to balance acoustics and cooling at full load. | Use Scenario: Low-noise evaporator fan in energy-efficient refrigerators operating continuously at partial load. IC Role / Device Role / Timing Role: Constant-speed or PWM-modulated fan controller with soft start and thermal foldback. Use Value: 800 mA current limit and 9 kV ESD robustness ensure long-term reliability in humid, vibration-prone cabinet environments. |
| Air Purifier Blower | LED Headlight Thermal Management |
Use Scenario: Compact air purifiers needing ultra-quiet fan operation at low RPM with rapid response to air quality triggers. IC Role / Device Role / Timing Role: PWM-controlled motor driver with configurable minimum speed (Rminsp) and RD-based stall monitoring. Use Value: Soft switching and AGC commutation reduce audible noise below 25 dB(A) while maintaining stable airflow down to 10% speed. | Use Scenario: Thermally constrained LED headlight assemblies requiring precise fan activation only above critical junction temperature. IC Role / Device Role / Timing Role: Standby-mode fan driver activated via microcontroller PWM, with OTP and LRP for fail-safe operation. Use Value: 3.3 V compatible input allows direct interface with automotive MCU GPIOs; RD output feeds back stall status to safety monitor. |
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 |
|---|---|---|---|
| MLX90297KZC-AAF-108 | FG (tachometer) output instead of RD; same SOIC8 package and 800 mA current limit. | Requires tach feedback for speed closed-loop control, not stall detection. | Select when system needs rotational speed reporting rather than rotor presence verification. |
| MLX90287KZC-AAA-000 | No current limiting; 5 W max motor power; 4.5–18 V supply; FG output only. | Lower power, no CLP/OTP/LRP; suited for cost-sensitive, non-critical cooling. | Choose where stall protection and 7 W drive are unnecessary and BOM cost is primary constraint. |
Compared with MLX90297KZC-AAF-108 and MLX90287KZC-AAA-000, the MLX90297KZC-ABF-108-SP uniquely combines RD output, 800 mA current limiting, and 7 W capability in SOIC8 - making it optimal for stall-aware, mid-power cooling where tach feedback is secondary to fault resilience.
Availability
MLX90297KZC-ABF-108-SP is available at Aetrix Electronics and suitable for gaming GPU cooling, refrigerator evaporator fans, air purifier blowers, and LED headlight thermal management requiring stable component supply and long-lifecycle support.
Supply support for MLX90297KZC-ABF-108-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, 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 AGC commutation, targeting low-noise, high-reliability cooling in thermal management systems where acoustic performance and fault resilience are critical.
FAQ
What does the "ABF" in MLX90297KZC-ABF-108-SP indicate?
The "ABF" suffix in MLX90297KZC-ABF-108-SP specifies RD (Rotor Detection) output functionality, SOIC8 package (ZC), and industrial/consumer grade qualification. It distinguishes this variant from FG-output versions like MLX90297KZC-AAF-108 and confirms 800 mA current limiting. This coding aligns with Melexis' official ordering nomenclature documented in their MLX90297 datasheet revision V2/16-03-2021.
Can MLX90297KZC-ABF-108-SP replace MLX90287KZC-AAA-000 directly?
No - MLX90297KZC-ABF-108-SP is not a drop-in replacement for MLX90287KZC-AAA-000. While both use SOIC8 packages, MLX90297KZC-ABF-108-SP adds current limiting, OTP, LRP, and RD output, and operates down to 3.3 V. PCB layout may require updates to accommodate new protection features and revised decoupling. MLX90297KZC-ABF-108-SP also requires Rminsp and R1 resistors absent in the MLX90287 design.
How is the speed curve configured on MLX90297KZC-ABF-108-SP?
The speed curve (10%, 20%, or 30%) on MLX90297KZC-ABF-108-SP is set by selecting the resistance value of external resistor R1 connected between MINSP and GND. Each value corresponds to a fixed percentage of maximum speed at minimum PWM duty cycle. Configuration is hardware-based and requires no programming or EEPROM writes - verified per Melexis' MLX90297 schematic and quick reference guide.
Does MLX90297KZC-ABF-108-SP support reverse polarity protection internally?
No - MLX90297KZC-ABF-108-SP requires an external diode for reverse polarity protection, unlike MLX90287 which includes built-in protection. This design choice reduces on-chip power dissipation and maintains efficiency but mandates inclusion of a Schottky diode (e.g., 1N5819) in series with VDD. The external diode must be rated for continuous motor current and transient surges.
What is the purpose of the RD output on MLX90297KZC-ABF-108-SP?
The RD (Rotor Detection) output on MLX90297KZC-ABF-108-SP is an open-drain signal that goes low when rotor movement is detected and high during stall or lock-rotor conditions. It enables simple, real-time mechanical fault monitoring without tachometer decoding. In MLX90297KZC-ABF-108-SP, RD replaces FG functionality - confirming rotor presence rather than reporting speed - and interfaces directly with microcontroller GPIO pins.
MLX90297KZC-ABF-108-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 8-SMD, Flat Leads
- 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:
- 8-SOIC
MLX90297KZC-ABF-108-SP FAQ
1.How can I place an order for MLX90297KZC-ABF-108-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90297KZC-ABF-108-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 MLX90297KZC-ABF-108-SP reliable?
The price and inventory of MLX90297KZC-ABF-108-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90297KZC-ABF-108-SP is usually 5 days.
3.What payment methods are accepted for MLX90297KZC-ABF-108-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90297KZC-ABF-108-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90297KZC-ABF-108-SP?
MLX90297KZC-ABF-108-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90297KZC-ABF-108-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 MLX90297KZC-ABF-108-SP?
For technical support, including MLX90297KZC-ABF-108-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90297KZC-ABF-108-SP requirements.
6.How does Aetrix verify that MLX90297KZC-ABF-108-SP is sourced from the original manufacturer or authorized distributors?
All MLX90297KZC-ABF-108-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 MLX90297KZC-ABF-108-SP meets industry standards.
7.What is the process for return or replacement of MLX90297KZC-ABF-108-SP?
All MLX90297KZC-ABF-108-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90297KZC-ABF-108-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 MLX90297KZC-ABF-108-SP part is unused and in its original packaging.
Return procedure for MLX90297KZC-ABF-108-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MLX90297KZC-ABF-108-SP 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 …
