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ADVANCED INFORMATION
TK11044
ADVANCED
INFORMATION
TEMPERATURE SENSOR IC
FEATURES
APPLICATIONS
s Linear Output Voltage 10 mV/°C Output
s 2.4 to 8.0 Volt Supply Range
s Miniature Package (SOT-23L)
s Minimum External Parts Count
s Low Power Consumption
s Home and Industrial Thermostats
s Automotive Climate Control
s Battery Charger Temperature Monitor
s Notebook Computer Temperature Monitor
s Electronic Thermometers
s Fish Finder Water Temperature
s Industrial Process Controllers
s Home Appliance Temperature Control
DESCRIPTION
The TK11044 is a temperature sensor IC with a linear
output of 10 mV/°C over the range of -25 to + 105 °C. Its
wide operating voltage range of 2.4 to 8.0 volts makes it
suitable for a number of applications requiring accurate
temperature control, such as electronic thermostats for
climate control, refrigerators, and industrial process controls.
A typical application is to make a digital representation of
temperature with an A/D converter, or to make a thermal
detector with a comparator.
The TK11044 has a compensation pin for a 0.1 µF capacitor
that insures stability over the IC's operating temperature
range.
The TK11044 is available in a miniature SOT 23L-6 surface
mount package.
TK11044
VCC
VOUT
20P
GND
GND
NC NC
Note: Both GND pins must connect to GND
BLOCK DIAGRAM
ORDERING INFORMATION
TK11044M-1
Tape/Reel Code
VCC
GND
NC
TAPE/REEL CODE
TL: Tape Left
TEMPERATURE
DETECTION
CIRCUIT
VCC
+
-
VOUT
GND
NC
May, 1998 TOKO, Inc.
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TK11044
ADVANCED INFORMATION
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ......................................................... 12 V
Operating Voltage ............................................ 2.4 to 8 V
Power Dissipation (Note 1) ................................ 200 mW
Junction Temperature ........................................... 150 °C
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range .................-25 to +105 °C
Lead Soldering Temp. (10 s) ................................. 235 °C
TK11044 ELECTRICAL CHARACTERISTICS
Test Conditions: VCC = 3.0 V, IOUT = 0 µA, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
TA = 25 °C
965 995 1025 mV
VOUT
Output Voltage
TA = 85 °C
TA = -25 °C
1573
1613
480
1653
mV
mV
TC
Temperature Coefficient
TA = 25 °C to 85 °C
9.5 10.3 11.1 mV/ °C
Line Reg Line Regulation
VCC = 3 V to 5 V
-20 -5 20 mV
Load Reg Load Regulation
IOUT = 0 µA to 400 µA
3 20 mV
ICC Supply Current
TA = 25 °C
160 200
µA
IOUT Output Current
VOUT 20 mV
400 µA
Note 1: Power dissipation is 200 mW when mounted as recommended. Derate at 1.6 mW/°C for operation above 25 °C.
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May, 1998 TOKO, Inc.

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ADVANCED INFORMATION
TEST CIRCUIT
VCC
+
10 µF
VOUT
COUT
0.1 µF
TK11044
TYPICAL PERFORMANCE CHARACTERISTICS
VCC = 3 V, IOUT = 0 µA, TA = 25 °C, unless otherwise specified.
OUTPUT VOLTAGE vs.
TEMPERATURE
LINEARITY ERROR vs.
TEMPERATURE
INPUT CURRENT vs.
TEMPERATURE
2.0 16 200
1.5 8 180
1.0
0.5
0
-40
0 40 80
TA (°C)
120
0
-8
-16
-40
0 40 80
TA (°C)
120
160
140
120
-40
0 40 80
TA (°C)
120
INPUT CURRENT vs.
INPUT VOLTAGE
200
LINE REGULATION
20
LOAD REGULATION
20
180
160
140
120
2
4 68
VCC (V)
10
10
0
-10
-20
2
4 68
VCC (V)
10
10
0
-10
-20
0 100 200 300 400
IOUT (µA)
May, 1998 TOKO, Inc.
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TK11044
ADVANCED INFORMATION
TYPICAL PERFORMANCE CHARACTERISTICS
VCC = 3 V, IOUT = 0 µA, TA = 25 °C, unless otherwise specified.
RIPPLE REJECTION RATIO A
80
60 COUT = 0.1 µF
40
20 Vrr = 100mVrms
0
10
100 1 k 10 k 100 k
f (Hz)
RIPPLE REJECTION RATIO B
80
60 COUT = 0.1 µF
40
20 Vrr = 100mVrms
0
10
100 1 k 10 k 100 k
f (Hz)
TEMPERATURE RESPONSE A
1.8
1.6
1.4 25 °C TO 85 °C
1.2
1.0
0
20 40 60
TIME (s)
80
TEMPERATURE RESPONSE B
1.2
1.0
0.8
25 °C TO -30 °C
0.6
0.4
0
20 40 60
TIME (s)
80
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May, 1998 TOKO, Inc.

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SOT 23L-6
65
4
ADVANCED INFORMATION
PACKAGE OUTLINE
marking
0.6
TK11044
Marking Information
TK11044
Marking
44C
123
e
0.95
e
0.95
+0.15
0.32 - 0.05
5 PL
0.1
M
+0.3
3.5 - 0.1
(3.4)
e 0.95 e 0.95
Recommended Mount Pad
2.2
0.1
Dimensions are shown in millimeters
Tolerance: x.x = ± 0.2 mm (unless otherwise specified)
+ 0.3
3.3
0.4
The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of
its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other
rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc.
TOKO AMERICA REGIONAL OFFICES
Midwest Regional Office
Toko America, Inc.
1250 Feehanville Drive
Mount Prospect, Il 60056
Tel: (847) 297-0070
Fax: (847) 699-7864
Western Regional Office
Toko America, Inc.
2480 North First Street, Suite 260
San Jose, CA 95131
Tel: (408) 432-8281
Fax: (408) 943-9790
Eastern Regional Office
Toko America, Inc.
107 Mill Plain Road
Danbury, CT 06811
Tel: (203) 748-6871
Fax: (203) 797-1223
Semiconductor Technical Support
Toko Design Center
4755 Forge Road
Colorado Springs, CO 80907
Tel: (719) 528-2200
Fax: (719) 528-2375
http://www.ictoko.com
May, 1998 TOKO, Inc.
© 1998 Toko, Inc.
All rights reserved
Printed in the USA
IC-???-TK11044
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