MLX90297LLD-SAF-108-RE

Overview

The MLX90297LLD-SAF-108-RE is a single-chip fan driver designed for single-coil brushless DC motors. It integrates a voltage regulator, Hall sensor with offset cancellation, and an H-bridge power output controlled by a digital state machine. The device supports PWM speed control via a dedicated input signal and allows configurable speed curves through external resistors. It operates within a supply voltage range of 3.3 V to 18 V and provides an output current limit of 800 mA. The component functions at frequencies between 100 Hz and 100 kHz and is housed in an SOIC-8 surface-mount package.

Feature Summary

• Integrates voltage regulator, Hall sensor, and H-bridge in a single package
• Enables efficient speed control via PWM input signals
• Supports configurable speed curves using external resistors
• Complies with AEC-Q100 automotive qualification standards

Applications

• Single-coil DC brushless motor driving
• Fan speed control systems
• Automotive thermal management applications

Procurement Notes

Verify the specific suffix codes against official Melexis documentation to confirm pinout compatibility and functional specifications. Ensure that the selected variant aligns with the required operating voltage and current limits for the target application. Cross-reference the ordering part number with the manufacturer's latest datasheet to validate availability and design-in status before procurement.

Selection Notes

Select this component when a compact, low-BOM solution is required for single-coil BLDC fans. Consider the integrated Hall sensor and H-bridge for simplified PCB layout. Evaluate the external resistor requirements for speed curve configuration against system constraints. Verify AEC-Q100 compliance if the application demands automotive-grade reliability and robustness.

Part Context

This part belongs to the MLX90297 series of single-chip fan drivers from Melexis. These devices utilize mixed-signal CMOS technology to drive single-coil brushless DC motors efficiently. The series is designed to reduce bill-of-materials costs and enable smaller form factors by integrating all necessary control and power stages into a single SOIC-8 package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.