TK11051

Internal Temperature Sensor, Voltage Reference and Comparator
 Temperature Threshold and Hysteresis Set by OnlyTwo External Resistors
 Output Logic: High to Low with Increasing Temp.
Active High On/Off Control
2.7 to 6.0 V Supply Range
 Miniature Package (SOT-23L-6)
 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 .......................................................... 12 V
Power Dissipation (Note 1) ................................. 200 mW
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range .................-30 to +105 °C
Operating Voltage Range.................................. 2.7 to 6 V
Junction Temperature ........................................... 150 °C
Lead Soldering Temperature (10 s) ...................... 235 °C

The TK11051 is an accurate temperature controller IC for use over the -30 to +105 °C temperature range. The TK11051 monolithic bipolar integrated circuit contains a temperature sensor, stable voltage reference and a comparator, making the device very useful as an on/off temperature controller. Two external resistors easily set the sensing temperature threshold and hysteresis. Its wide operating voltage range of 2.7 to 6.0 V makes this IC suitable for a number of applications requiring accurate temperature control. The device is in the "on" state when the control pin is pulled to a logic high level.

The TK11051 is available in a miniature SOT-23L-6 surface mount package.