January 1999 TOKO, Inc.
Page 1
TK11051
VCONT
VCC
COMP IN
COMP OUT
VREF
GND
FEATURES
I
Internal Temperature Sensor, Voltage Reference
and Comparator
I
Temperature Threshold and Hysteresis Set by Only
Two External Resistors
I
Output Logic: High to Low with Increasing Temp.
I
Active High On/Off Control
I
2.7 to 6.0 V Supply Range
I
Miniature Package (SOT-23L-6)
I
Minimum External Parts Count
I
Low Power Consumption
I
Very Wide Temperature Range
BLOCK DIAGRAM
TK11051
DESCRIPTION
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.
01S
VREF
GND
VCONT
COMP OUT
VCC
ON/OFF
RVOLTAGE
+
-
TESENSOR
COMP IN
VPTAT
ORDERING INFORMATION
TAPE/REEL CODE
TL: Tape Left
Tape/Reel Code
TK11051MTL
APPLICATIONS
I
Home and Industrial Thermostats
I
Home Appliance Temperature Control
I
Notebook Computer Temperature Monitor
I
Pentium Processor Temperature Monitor
I
Power Supply Overtemperature Protection
I
Copy Machine Overtemperature Protection
I
System Overtemperature Protection
TEMPERATURE CONTROLLER IC