TK11050
TEMPERATURE CONTROLLER IC
FEATURES
APPLICATIONS
■ Internal Temperature Sensor, Voltage Reference
and Comparator
■ 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
■ Temperature Threshold and Hysteresis Set by Only
Two External Resistors
■ Output Logic: Low to High 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
DESCRIPTION
TK11050
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
thesensingtemperaturethresholdandhysteresis. Itswide
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.
V
COMP OUT
GND
CC
01S
V
CONT
V
COMP IN
REF
TheTK11050isavailableinaminiatureSOT-23L-6surface
mount package.
BLOCK DIAGRAM
ORDERING INFORMATION
ON/OFF
CIRCUIT
V
V
CC
CONT
V
PTAT
TEMPERATURE
SENSOR
TK11050MTL
VOLTAGE
REFERENCE
V
REF
COMP OUT
Tape/Reel Code
-
COMP IN
+
GND
TAPE/REEL CODE
TL: Tape Left
January 1999 TOKO, Inc.
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