Maxim Offers New MAX6686 Temperature Switch

Maxim Integrated Products Inc. (Sunnyvale, CA) introduced its MAX6686 dual, remote-junction, temperature switch that monitors high and low alarms and protects processors from overheating. It measures the temperature of a P-N junction in an external IC with 1.5°C accuracy. The local temperature switch has a pin-programmable temperature threshold adjustable in 5°C increments.

Two trip-threshold temperature ranges, +40°C to +80°C and +0°C to +115°C, are available. The upper temperature limit is factory set at either +120°C or +125°C and is associated with a separate logic output. Typically, the upper limit is used for system shutdown, and the lower limit is used for clock throttling, warning or fan control. The MAX6686 minimizes false alarms by integrating and oversampling the diode voltage. Built-in hysteresis prevents output chattering when the measured temperature is close to the threshold temperature.

The MAX6686 is available in an eight-pin microMAX package and is specified for the -40°C to +125°C temperature range. It operates from 3V to 5.5V with a 200µA supply current. Prices start at $1.20 for quantities of 1,000 and more.