TK11050

TK11050 TEMPERATURE CONTROLLER IC FEATURES s Internal Temperature Sensor, Voltage Reference and Comparator s Temperature Threshold and Hysteresis Set by Only Two External Resistors s Output Logic: Low to High with Increasing Temp. s Active High On/Off Control s 2.7 to 6.0 V Supply Range s Miniature Package (SOT-23L-6) s Minimum External Parts Count s Low Power Consumption s Very Wide Temperature Range APPLICATIONS s s s s s s s 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 DESCRIPTION The TK11050 is an accurate temperature controller IC for use over the -30 to +105 °C temperature range. The TK11050 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 TK11050 is available in a miniature SOT-23L-6 surface mount package. BLOCK DIAGRAM TK11050 VCC VCONT VREF COMP OUT 01 S GND COMP IN ORDERING INFORMATION VCONT ON/OFF CIRCUIT VCC ...