TK11052

  Internal Temperature Sensor, Voltage Reference and Two Comparators with
  Temperature Threshold and Hysteresis Set by Only Two External Resistors
  Output Logic:
    Low to High with Increasing Temp. by OUTPUT1
    High to Low with Increasing Temp. by OUTPUT2
  Very Wide Operating Supply Range (V_CC = 2.7 to 6.0 V)
  Miniature Package (SOT23L-8)
  Minimum External Parts Count
  Low Power Consumption
 Very Wide Temperature Range

  Home and Industrial Thermostats
  Home Appliance Temperature Control
  Notebook Computer Temperature Monitor
  Pentium Processor Temperature Monitor
  Power Supply Overtemperature Protection
  Copy Machine Overtemperature Protection
  System Overtemperature Protection

Supply Voltage ......................................................... 10 V
Power Dissipation .............................................. 200 mW
Storage Temperature Range ...................-55 to +150 °C
Operating Temperature Range ................-30 to +105 °C
Operating Voltage Range.............................. 2.7 to 6.0 V
Junction Temperature .......................................... 150 °C
Lead Soldering Temperature (10 s) ..................... 235 °C

The TK11052 is an accurate temperature controller IC for use over the -30 to +105 °C temperature range. The TK11052 monolithic bipolar integrated circuit contains a temperature sensor, stable voltage reference and two comparators, making the device very useful as an on/off thermostat. Two external resistors easily set the sensing temperature threshold and hysteresis of each thermostat. Its wide operating voltage range of 2.7 to 6.0 V makes this IC suitable for a number of applications requiring an accurate thermostat.

The TK11052 is available in a miniature SOT23L-8 surface mount package.