January 1999 TOKO, Inc.
Page 1
TK11042
TK11042
TEMPERATURE SENSOR IC
DESCRIPTION
The TK11042 is a temperature sensor IC with a linear
output of 6 mV/
C over the range of -30 to + 105
C. Its
wide operating voltage range of 2.7 to 10.0 V 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 TK11042 has a compensation pin for a 0.1
F capacitor
that ensures stability over the IC's operating temperature
range.
The TK11042 is available in a miniature SOT-25 surface
mount package.
FEATURES
s
Linear Output Voltage 6 mV/
C Output
s
2.7 to 10.0 V Supply Range
s
Miniature Package (SOT-25)
s
Minimum External Parts Count
s
Low Power Consumption
APPLICATIONS
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
BLOCK DIAGRAM
VCC
VOUT
TEMPERATURE
SENSOR
X1
ORDERING INFORMATION
TAPE/REEL CODE
TL: Tape Left
Tape/Reel Code
TK11042M-1
HS
VCC
NC
GND
VOUT
01S
Note: Connect pin 2 to GND
Page 2
January 1999 TOKO, Inc.
TK11042
AMBIENT TEMPERATURE (
C)
-20
0 25 50
85 105
1.52
1.64
1.79
1.94
2.15
2.27
OUTPUT (V)
Supply Voltage ......................................................... 12 V
Operating Voltage .......................................... 2.7 to 10 V
Power Dissipation (Note 1) ................................ 150 mW
Junction Temperature ........................................... 150
C
ABSOLUTE MAXIMUM RATINGS
TK11042 ELECTRICAL CHARACTERISTICS
Test Conditions: V
CC
=
3.0 V, I
OUT
= 0
A, T
A
= 25
C, unless otherwise specified.
Note 1: Power dissipation is 150 mW when mounted as recommended. Derate at 1.2 mW/
C for operation above 25
C.
Storage Temperature Range ................... -55 to +150
C
Operating Temperature Range ................. -30 to +105
C
Lead Soldering Temperature (10 s) ...................... 235
C
FIGURE 1. OUTPUT CHARACTERISTICS
L
O
B
M
Y
S
R
E
T
E
M
A
R
A
P
S
N
O
I
T
I
D
N
O
C
T
S
E
T
N
I
M
P
Y
T
X
A
M
S
T
I
N
U
V
T
U
O
e
g
a
t
l
o
V
t
u
p
t
u
O
T
A
C
5
2
=
6
7
7
.
1
4
9
7
.
1
2
1
8
.
1
V
T
A
C
5
8
=
1
3
1
.
2
5
5
1
.
2
9
7
1
.
2
V
T
A
C
0
3
-
=
3
6
4
.
1
V
T
C
t
n
e
i
c
i
f
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
T
A
C
5
8
o
t
C
5
2
=
0
5
.
5
2
0
.
6
0
5
.
6
C
/
V
m
g
e
R
e
n
i
L
n
o
i
t
a
l
u
g
e
R
e
n
i
L
V
C
C
V
0
1
o
t
3
=
2
1
-
2
2
1
V
m
g
e
R
d
a
o
L
n
o
i
t
a
l
u
g
e
R
d
a
o
L
I
T
U
O
A
0
0
1
o
t
0
=
0
2
2
1
V
m
I
C
C
t
n
e
r
r
u
C
y
l
p
p
u
S
T
A
C
5
2
=
0
1
1
0
8
1
A
I
T
U
O
t
n
e
r
r
u
C
t
u
p
t
u
O
V
T
U
O
V
m
5
1
0
0
4
A
January 1999 TOKO, Inc.
Page 3
TK11042
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC
= 3 V, T
A
= 25
C, unless otherwise specified.
TEST CIRCUIT
Note: Connect pin 2 to ground
VCC
10 F
0.1 F
+
+
HS
VCC
NC
GND
VOUT
I CC
(A)
150
250
SUPPLY CURRENT vs.
SUPPLY VOLTAGE
VCC (V)
50
0 2 4 6 8 10
200
100
0
V
OUT
(V)
1.80
1.84
OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
VCC (V)
1.76
0 2 4 6 8 10
1.82
1.78
V
OUT
(V)
1.80
1.84
OUTPUT VOLTAGE vs.
OUTPUT CURRENT
IOUT (A)
1.76
0 200 400 600 800 1000
1.82
1.78
V
ERR
(mV)
+40
LINEARITY ERROR vs.
TEMPERATURE
TA (
C)
-40
-40 0 40 80 120
+20
-20
0
VERR = VOUT - VREAL
VREAL = 2.98 + (TA - 25) X 10 mV
V
OUT
(V)
3
5
OUTPUT VOLTAGE vs.
TEMPERATURE
TA (
C)
1
-40 0 40 80 120
4
2
0
I CC
(
A)
150
250
SUPPLY CURRENT vs.
TEMPERATURE
TA ( C)
50
-40 0 40 80 120
200
100
0
VCC = 12 V
VCC = 5 V
Page 4
January 1999 TOKO, Inc.
TK11042
0.95
0.95
0.95
0.95
e
M
0.1
2.9
1.6
1.1
0.15
0.4
2.8
1.90
2.4
e'
Recommended Mount Pad
1
2
3
4
5
1.0
0.7
(0.8)
0 - 0.1
(0.6)
(0.6)
1.4 max
e
e
e
0.1
e1
0 - 15 max
Marking
0.3
+0.15
- 0.05
Dimensions are shown in millimeters
Tolerance: x.x =
0.2 mm (unless otherwise specified)
+0.15
-0.05
Marking Information
Marking
TK11042
42C
SOT-25 (SOT-23-5)
PACKAGE OUTLINE
Printed in the USA
1999 Toko, Inc.
All Rights Reserved
TOKO AMERICA REGIONAL OFFICES
Toko America, Inc. Headquarters
1250 Feehanville Drive, Mount Prospect, Illinois 60056
Tel: (847) 297-0070 Fax: (847) 699-7864
IC-228-TK11042
0798O0.0K
Visit our Internet site at http://www.tokoam.com
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.
Western Regional Office
Toko America, Inc.
2480 North First Street , Suite 260
San Jose, CA 95131
Tel: (408) 432-8281
Fax: (408) 943-9790
Midwest Regional Office
Toko America, Inc.
1250 Feehanville Drive
Mount Prospect, IL 60056
Tel: (847) 297-0070
Fax: (847) 699-7864
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
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