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Product Detailed Parameters
- Description：1-COIL PWM 3.3 18V 800MA CURRENT
- Series：-
- Mfr：Melexis Technologies NV
- Package：Tape & Reel (TR)
- 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：-
- Mounting Type：Surface Mount
- Package / Case：10-VFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The MLX90297LLW-ABF-108-RE is a single-chip fan driver designed for driving single-coil DC brushless motors (BLDC). It operates within a supply voltage range of 3.3 V to 18 V and supports a maximum output current of 800 mA. The device utilizes a PWM input signal for efficient speed control via the output half-bridge driver. It features an integrated voltage regulator, a Hall sensor with an advanced offset elimination system, and a power output H-bridge, all managed by a digital state machine. The component is housed in an SOIC-8 package and complies with AEC-Q100 standards.
Feature Summary
- Integrates a single-coil fan driver with a mixed-signal CMOS process for low BOM cost and compact PCB design.
- Provides high magnetic sensitivity and robust operation through an integrated Hall sensor with advanced offset elimination.
- Supports configurable speed curves via external resistors while maintaining low noise performance.
Applications
- Consumer electronics cooling systems
- Single-coil DC brushless motor control
- Automotive fan applications
Procurement Notes
Verify the specific suffix LLW against official Melexis documentation to confirm pinout and package variations. Confirm availability status as previous variants in this series are marked NRND. Ensure ESD protection requirements align with the specified 9 kV HBM rating during handling and assembly processes.
Selection Notes
Select this component when a single-chip solution for single-coil BLDC fans is required. It is suitable for applications needing a wide operating voltage range from 3.3 V to 18 V. Consider the AEC-Q100 qualification if automotive reliability is necessary. Evaluate the 800 mA current limit against the specific motor load requirements.
Part Context
This part belongs to the MLX90297 series of single-coil fan drivers manufactured by Melexis. These devices are designed to replace discrete solutions, offering a highly integrated approach that reduces board space and component count. The series is targeted at both consumer and automotive markets requiring reliable and quiet fan operation.
Replacement Considerations
Check for direct cross-references in Melexis product selection guides. Previous versions like MLX90297KZC or ABF may share functional similarities but require verification of package and electrical parameter compatibility before substitution.
