STMicroelectronics

STTS751 Digital Temperature Sensors

ST miniaturizes digital temperature sensors for portable product protection

Image of STMicroelectronics' STTS751 Digital Temperature SensorsSTMicroelectronics' STTS751 digital temperature sensor (DTS) is mounted on a circuit board to feed back accurate temperature data, allowing a system to manage its temperature, for example, by activating a cooling fan or shutdown circuitry.

Measuring 2 x 2 mm, this sensor is smaller than previous generation sensors and has an ultra-low 50 µA operating current, a power-saving 3 µA standby current, and a one-shot mode that makes the device ideal for battery-powered applications. One-shot operation allows the sensor to sleep for extended periods, waking only to provide an instantaneous reading when triggered by the system.

The STTS751 is accurate to within 1°C and communicates its temperature data via an industry standard system management bus (SMBus) interface. This allows the sensor to be easily designed into a wide range of consumer and professional equipment, including solid-state drives, large display backlights, smart batteries, servers and routers, telecom and Internet infrastructure, and e-readers.

Features
  • Single address pin (external resistor) to select four unique slave addresses
  • Programmable conversion rates: 0.0625 to 32 conversions/sec
  • Low operating current: 50 µA (typ) at 8 conversions/sec
  • 4 user programmable resolutions: 9- to 12 bits
  • Accuracy: ±1.0°C (typ) from 0 to +85°C
  • Fast conversion time: 21 ms (typ) 10-bit
  • Operating temperature: -40 to +125°C
  • Operating voltage: 2.25 to 3.6 V
  • Dual alarm: 1 interrupt and 1 therm
  • Low standby current: 3 µA (typ)
  • One-shot mode for power saving
  • SOT23-6 and UDFN6 packages
  • SMBus 2.0 compatible

Applications

  • LED backlight units for large displays
  • Telecom switches and base stations
  • Solid state drives (SSDs)
  • Portable electronics
  • Servers and routers
  • Notebook computers
  • Smart batteries
  • E-readers
Published: 2013-07-02