STLM75:Digital temperature sensor and thermal watchdog

The STLM75 is a high-precision digital CMOS temperature sensor IC with a sigma-delta temperature-to-digital converter and an I2C-compatible serial digital interface. It is targeted for general applications such as personal computers, system thermal management, electronics equipment, and industrial controllers, and is packaged in the industry standard 8-lead TSSOP and SO8 packages.

The device contains a band gap temperature sensor and 9-bit ADC which monitor and digitize the temperature to a resolution up to 0.5 °C. The STLM75 is typically accurate to (±3 °C - max) over the full temperature measurement range of –55 °C to 125 °C with ±2 °C accuracy in the –25 °C to +100 °C range. The STLM75 is pin-for-pin and software compatible with the LM75B.

The STLM75 is specified for operating at supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the supply current is typically (125 μA).

The on-board sigma-delta analog-to-digital converter (ADC) converts the measured temperature to a digital value that is calibrated in degrees centigrade; for Fahrenheit applications a lookup table or conversion routine is required.

The STLM75 is factory-calibrated and requires no external components to measure temperature.

Key Features

  • Measures temperatures from –55°C to +125°C (–67°F to +257°F)
    • ±0.5°C (typ) accuracy
    • ±2°C (max) accuracy from –25°C to +100°C
  • Low operating current: 125 μA (typ)
  • No external components required
  • 2-wire I2 C/SMBus-compatible serial interface
    • Supports bus time-out feature
    • Selectable bus address allows connection of up to eight devices on the bus
  • Wide power supply range-operating voltage range: 2.7 V to 5.5 V
  • Conversion time is 150 ms (max)
  • Programmable temperature threshold and hysteresis set points
  • Pin- and software-compatible with LM75 (drop-in replacement)
  • Power-up defaults permit standalone operation as a thermostat
  • Shutdown mode to minimize power consumption
  • Output pin (open drain) can be configured for interrupt or comparator/thermostat mode (dual purpose event pin)
  • Packages:
    • SO8
    • MSOP8 (TSSOP8)
产品规格
DescriptionVersionSize
DS5155: Digital temperature sensor and thermal watchdog12.1645 KB
应用手册
DescriptionVersionSize
AN2680: Fan speed controller based on STDS75 or STLM75 digital temperature sensor and ST72651AR6 MCU1.4125 KB
AN3108: STLM75 firmware library for the STM32F10x1.2785 KB
宣传册
DescriptionVersionSize
STTS752.2706 KB
MCUs Embedded Software
型号制造商Description
STSW-ST7055STFan speed controller based on STDS75 or STLM75 digital temperature sensor and ST72651AR6 MCU
样片和购买
型号PackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STLM75DS2FMSOP/TSSOP 8Tape And Reel-55125--NECEAR99MALAYSIA
STLM75M2FSO-8Tape And Reel-55125--NECEAR99MOROCCO
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
STLM75DS2FMSOP/TSSOP 8IndustrialEcopack2md_e3-wspc-msop-wspc-tssop8-wspc-body-wspc-3.00-wspc-pitch-wspc-0.65_dcds-wspc-m6laclm.pdf
md_e3-wspc-msop-wspc-tssop8-wspc-body-wspc-3.xml
STLM75M2FSO-8IndustrialEcopack1 (*)md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_bczm-wspc-m6laclm.pdf
md_o7-wspc-so-wspc-08-wspc-.xml
Digital temperature sensor and thermal watchdog STLM75
circuit_diagram_13296_thumbnail.png STLM75
Fan speed controller based on STDS75 or STLM75 digital temperature sensor and ST72651AR6 MCU STLM75
STLM75 firmware library for the STM32F10x STM32F101ZC
Digital temperature sensor and thermal watchdog STTS75
md_e3-wspc-msop-wspc-tssop8-wspc-body-wspc-3.00-wspc-pitch-wspc-0.65_dcds-wspc-m6laclm.pdf STLM75
md_e3-wspc-msop-wspc-tssop8-wspc-body-wspc-3.xml TSV6292A
md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_bczm-wspc-m6laclm.pdf STLM75
md_o7-wspc-so-wspc-08-wspc-.xml TS4871
STLM75