Power Electronics / Power Management


Temperature and voltage monitor

11 July 2012 Power Electronics / Power Management

Linear Technology introduced the LTC2995 temperature sensor and dual supply monitor for low-voltage systems. The IC measures a remote diode’s temperature with ±1°C accuracy and its own die temperature with ±2°C accuracy, while rejecting errors due to noise and series resistance. Two voltage rails, one of which is required to be between 2,25 V and 5,5 V to power the device, are monitored with ±1,5% accuracy. The device provides a voltage-proportional-to-absolute-temperature (VPTAT) output, as well as individual under-temperature, over-temperature, under-voltage and over-voltage alert outputs defined by user-adjustable thresholds. Temperature conversions are updated every 3,5 ms to provide systems with sufficient time to react to alerts.



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