MAX31760AEE+T

MAX31760AEE+T is a precision fan-speed controller with a non-volatile lookup table. It integrates temperature sensing along with precision PWM fan control. It accurately measures its local die temperature and the remote temperature of a discrete diode-connected transistor, such as a 2N3906, or a thermal diode commonly found on CPUs, graphics processor units (GPUs), and other ASICs. Multiple temperature thresholds, such as local high/overtemperature (OT) and remote high/overtemperature, can be set by an I2C-compatible interface. Fan speed is controlled based on the temperature reading as an index to a 48-byte lookup table (LUT) containing user-programmed PWM values. The flexible LUT-based architecture enables the user to program a smooth nonlinear fan speed vs. temperature transfer function to minimize acoustic fan noise. Typical applications are servers, networking equipment, STB/DVR, NAS/DAS.

• Operating settings stored in non-volatile memory for automatic operation at power-on
• 48-step non-volatile LUT maps temperature to PWM duty cycle
• Smooth PWM duty-cycle transitions minimize audibility of fan noise
• Two tachometer inputs for measuring the RPM of two fans independently
• Active-low FF/FS pin multiplexes fan-failure output with FullSpeed fan-drive input
• Accurately senses remote and local temperature
• Programmable thermal diode ideality factor minimizes ideality factor mismatch
• Automatic series resistance cancellation, dedicated active-low ALERT pin for temperature faults
• 3.0V to 3.6V operating voltage range
• 16-pin QSOP package, -40°C to +125°C temperature range

Výstrahy

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Poznámky

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party