LM75  Product Folder

The LM75 is a temperature sensor, Delta-Sigma analog-to-digital converter, and digital over-temperature detector with I²C® interface. The host can query the LM75 at any time to read temperature. The open-drain Overtemperature Shutdown (O.S.) output becomes active when the temperature exceeds a programmable limit. This pin can operate in either "Comparator" or "Interrupt" mode.

The host can program both the temperature alarm threshold (T_OS) and the temperature at which the alarm condition goes away (T_HYST). In addition, the host can read back the contents of the LM75's T_OS and T_HYST registers. Three pins (A0, A1, A2) are available for address selection. The sensor powers up in Comparator mode with default thresholds of 80°C T_OS and 75°C T_HYST.

The LM75's 3.0V to 5.5V supply voltage range, low supply current and I²C interface make it ideal for a wide range of applications. These include thermal management and protection applications in personal computers, electronic test equipment, and office electronics.

• SOP-8 and Mini SOP-8 (MSOP) packages save space
• I²C Bus interface
• Separate open-drain output pin operates as interrupt or comparator/thermostat output
• Register readback capability
• Power up defaults permit stand-alone operation as thermostat
• Shutdown mode to minimize power consumption
• Up to 8 LM75s can be connected to a single bus

• System Thermal Management
• Personal Computers
• Office Electronics
• Electronic Test Equipment