LM75B Digital Temperature Sensor and Thermal Watchdog

If you’re looking for a well built, versatile, digital temperature sensor, the LM75B might just be what you need. The LM75B employs an on-chip band gap temperature sensor and Sigma-Delta A-to-D conversion technique with an overtemperature detection output. Also equipped with numerous data registers, the LM75B is able to store device settings like device operation mode, OS operation mode, OS polarity, OS fault queue, and many more.

The LM75B has a number of modes of operation such as normal mode, shutdown mode, two modes for OS output namely OS comparator mode and OS interrupt mode, giving you a wide array of possible uses and applications. And most importantly, between -25℃ to +100℃ an accuracy of ±2℃ is maintained. Even going up to the maximum levels of -55℃ to +125℃, an accuracy of ±3℃ can still be expected.

Digital temperature sensor and thermal watchdog

Digital temperature sensor and thermal watchdog

Why Used?

  • I²C-bus interface with up to 8 devices on the same bus
  • Power supply range from 2.8 V to 5.5 V
  • 11-bit ADC that offers a temperature resolution of 0.125 °C
  • Programmable temperature threshold and hysteresis set points
  • Stand-alone operation as thermostat at power-up
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
  • Small 8-pin package types: SO8, TSSOP8, 3 mm x 2 mm XSON8U, and 2 mm x 3 mm HWSON8

Where Used?

  • System thermal management
  • Personal computers
  • Electronics equipment
  • Industrial controllers

Related Links

Level shifting techniques in I2C-bus design


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