GENERAL DESCRIPTION
The TMP12 is a silicon-based airflow and temperature sensor designed to be placed in the same airstream as heat generating components that require cooling. Fan cooling may be required continuously, or during peak power demands, e.g. for a power supply, and if the cooling systems fails, system reliability and/or
safety may be impaired. By monitoring temperature while emulating a power IC, the TMP12 can provide a warning of cooling system failure.

FEATURES
   Temperature Sensor Includes 100 ΩHeater
   Heater Provides Power IC Emulation
   Accuracy 63°C typ. from 240°C to 1100°C
   Operation to 1150°C
   5 mV/°C Internal Scale-Factor
   Resistor Programmable Temperature Setpoints
   20 mA Open-Collector Setpoint Outputs
   Programmable Thermal Hysteresis
   Internal 2.5 V Reference
   Single 5 V Operation
   400 µA Quiescent Current (Heater OFF)
   Minimal External Components

APPLICATIONS
   System Airflow Sensor
   Equipment Over-Temperature Sensor
   Over-Temperature Protection
   Power Supply Thermal Sensor
   Low-Cost Fan Controller