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PDF TK11052M Data sheet ( Hoja de datos )

Número de pieza TK11052M
Descripción THERMOSTAT IC
Fabricantes TOKO 
Logotipo TOKO Logotipo



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No Preview Available ! TK11052M Hoja de datos, Descripción, Manual

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
(VCC = 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
DESCRIPTION
The TK11052 is an accurate temperature controller IC for
use over the -30 to +105 °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.
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
TK11052
INPUT1
INPUT2
01S
VCC
VREF
OUTPUT1
OUTPUT2
GND
NC
The TK11052 is available in a miniature SOT23L-8 surface
mount package.
BLOCK DIAGRAM
ORDERING INFORMATION
TK11052MTL
Tape/Reel Code
TAPE/REEL CODE
TL: Tape Left
IIB1
ISH1
IIB2
ISH2
- COMP1
+
+ COMP2
-
TEMPERATURE
SENSOR
TC = 6.1 mV/ °C
IOUT
Vref = 1.597 V
REFERENCE
VOLTAGE
ISINK1
ISINK2
July 1999 TOKO, Inc.
Page 1

1 page




TK11052M pdf
TK11052
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C, VCC = 3 V, IOUT = 80 µA, unless otherwise specified.
LINE REGULATION
2
1
0
-1
-2
0
3 4 567 8
VCC (V)
SUPPLY CURRENT vs.
SUPPLY VOLTAGE
340 OUTPUT1 = "H"
OUTPUT2 = "L"
320
300
280
260
240
34 567
VCC (V)
8
OUTPUT 1 vs. SUPPLY VOLTAGE
2.5 when CLH
2.0
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5
VCC (V)
OUTPUT 1 vs. SUPPLY VOLTAGE
2.5 when CLL
2.0
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5
VCC (V)
OUTPUT 2 vs. SUPPLY VOLTAGE
2.5 when CLH
2.0
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5
VCC (V)
July 1999 TOKO, Inc.
OUTPUT 2 vs. SUPPLY VOLTAGE
2.5 when CLL
2.0
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5
VCC (V)
Page 5

5 Page





TK11052M arduino
TK11052
Noise Reduction
APPLICATION HINTS (CONT.)
When the thermostat IC is operated in a noisy environment (e.g., motor, fan, etc.), the noise on the signal lines may exceed
the limits of the comparator hysteresis window. This results in erratic comparator output levels. This can be corrected by
adding 0.1 µF capacitors from Pin 1 to GND (or Pin 4), Pin 2 to GND (or Pin 4), and Pin 4 to GND as shown below. The
configuration is determined by the desired comparator output level during power-up in the hysteresis area as described
earlier.
C = 0.1 µF
b
Rb
C = 0.1 µF
d
Rd
VCC
Ra
Rc
1 µF
Vref
Cref = 0.1 µF
V
CC
ROUT1
VCC OUTPUT1
ROUT2
OUTPUT2
July 1999 TOKO, Inc.
Page 11

11 Page







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