TK11052
THERMOSTAT IC
FEATURES
s
Internal Temperature Sensor, Voltage Reference
and Two Comparators with
s
Temperature Threshold and Hysteresis Set by Only
Two External Resistors
s
Output Logic:
Low to High with Increasing Temp. by OUTPUT1
High to Low with Increasing Temp. by OUTPUT2
s
Very Wide Operating Supply Range
(V
CC
= 2.7 to 6.0 V)
s
Miniature Package (SOT23L-8)
s
Minimum External Parts Count
s
Low Power Consumption
s
Very Wide Temperature Range
APPLICATIONS
s
Home and Industrial Thermostats
s
Home Appliance Temperature Control
s
Notebook Computer Temperature Monitor
s
Pentium Processor Temperature Monitor
s
Power Supply Overtemperature Protection
s
Copy Machine Overtemperature Protection
s
System Overtemperature Protection
DESCRIPTION
The TK11052 is an accurate temperature controller IC for
use over the -30 to +105
擄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.
TK11052
INPUT1
INPUT2
01S
OUTPUT1
OUTPUT2
GND
VCC
VREF
NC
BLOCK DIAGRAM
I
IB1
ISINK1
-
COMP1
ORDERING INFORMATION
I
SH1
I
IB2
+
ISINK2
+
COMP2
-
TEMPERATURE
SENSOR
TC = 6.1 mV/
擄C
TK11052MTL
Tape/Reel Code
I
SH2
TAPE/REEL CODE
TL: Tape Left
I
OUT
Vref = 1.597 V
REFERENCE
VOLTAGE
July 1999 TOKO, Inc.
Page 1