MAX6643 (4)
The MAX6643 series is available from Analog Devices at Xecor. Designed for automatic PWM fan-speed control and temperature monitoring, the MAX6643 offers internal and external temperature sensing, fan failure detection, and precise 32Hz PWM output with controlled duty-cycle rate-of-change for optimal acoustic performance. Available in 16-pin QSOP packages, it is ideal for desktop computers, networking equipment, servers, storage systems, and workstations. Whether used in thermal management of high-performance computing systems or cooling solutions for industrial equipment, this series ensures reliable performance, energy efficiency, and scalability for demanding applications. Xecor is an authorized distributor for Analog Devices. Please view our extensive selection of the MAX6643 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| MAX6643LBBAEE+ | Motor / Motion / Ignition Controllers & Drivers Automatic PWM Fan-Speed Controllers with Overtemperature Output | QSOP-16 | 9,266 | |
| MAX6643LBBAEE+T | Automatic PWM Fan-Speed Controllers with Overtemperature Output | QSOP-16 | 7,910 | |
| MAX6643LBFAEE+T | Advanced PWM Fan Speed Manager with Overtemp Alarm | QSOP-16 | 2,039 | |
| MAX6643LBFAEE+ | Automatic fan speed control with overheat protection | QSOP-16 | 4,591 |
Key Featrues
Internal and External Temperature Sensing: The device monitors both internal and external temperature locations, providing comprehensive thermal management. This dual-sensing capability improves system reliability by accurately detecting overheating in critical components.
Fan Failure Detection: Through locked-rotor output, tachometer output, or fan-supply current sensing, the MAX6643LBBAEE+T can detect fan failures. This feature ensures timely maintenance, preventing potential system damage due to inadequate cooling.
Pin-Selectable Temperature Thresholds: Users can set low and high-temperature fan thresholds via pin selection, allowing customization for specific applications. This flexibility ensures precise thermal control tailored to different use cases, such as desktops, servers, or networking equipment.
32Hz PWM Output with Controlled Duty-Cycle Rate-of-Change: The 32Hz PWM output ensures smooth fan-speed transitions, reducing audible noise during operation. The controlled rate-of-change further enhances acoustic performance, making it ideal for noise-sensitive environments.
Applications
Thermal Management in Networking Equipment: The MAX6643 is perfect for managing thermal conditions in networking equipment such as routers and switches. Its precise temperature sensing and PWM output allow for dynamic fan-speed adjustments, ensuring reliable operation and preventing overheating in critical network infrastructure.
Server Cooling Optimization: The MAX6643 is well-suited for use in servers, where it can monitor multiple temperature locations and adjust fan speeds accordingly. Its ability to detect fan failures and ensure smooth fan start-up minimizes downtime and enhances the reliability of data center operations.
Workstation Thermal Regulation: The MAX6643 is ideal for workstations, where it can provide automatic fan-speed control based on real-time temperature measurements. Its high accuracy and low audibility of fan-speed changes ensure a quiet and efficient working environment, making it suitable for professional and creative workstations.
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