January 1999 TOKO, Inc.
Page 1
TK11070
TK11070
NEGATIVE SLOPE TEMPERATURE SENSOR IC
FEATURES
s
Linear Output Voltage -8 mV/
C Output
s
Active High On/Off Control
s
2.7 to 10.0 V Supply Range
s
Miniature Package (SOT-23-5)
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
s
Liquid Crystal Panel Contrast Adjustment
BLOCK DIAGRAM
ORDERING INFORMATION
TAPE/REEL CODE
TL: Tape Left
Tape/Reel Code
TK11070M
HS
VCC
VOUT
CONTROL
GND
01S
GND
CONTROL
HS
ON/OFF
CIRCUIT
TEMPERATURE
DETECTION
CIRCUIT
VCC
VOUT
VCC
+
-
DESCRIPTION
The TK11070 is a temperature sensor IC with a linear
negative slope output of -8 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. The device is in the "on" state when the
control pin is pulled to a logic high level. In the "off" state,
the standby current is 1
A maximum.
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 TK11070 has a compensation pin for a 0.1
F capacitor
that ensures stability over the IC's operating temperature
range.
The TK11070 is available in a miniature SOT-23-5 surface
mount package.
Note: Pin 2 must connect to GND
Page 2
January 1999 TOKO, Inc.
TK11070
Supply Voltage ......................................................... 12 V
Operating Voltage ....................................... 2.7 to 10.0 V
Power Dissipation (Note 1) ................................ 150 mW
Junction Temperature ........................................... 150
C
ABSOLUTE MAXIMUM RATINGS
TK11070 ELECTRICAL CHARACTERISTICS
Test Conditions: V
CC
=
3.0 V, V
CONT
= 2.4 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
L
O
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-
=
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4
.
2
V
T
A
C
5
2
-
=
0
8
9
.
1
0
0
0
.
2
0
2
0
.
2
V
T
A
C
5
8
=
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January 1999 TOKO, Inc.
Page 3
TK11070
VCC
+
VCONT
CONTROL
GND
HS
VOUT
COUT
IOUT
VOUT
0.1 F
10 F
ICC
ICONT
VCC
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC
= 3 V, V
CONT
= 2.4 V, I
OUT
= 0
A, T
A
= 25
C, unless otherwise specified.
TEST CIRCUIT
V
OUT
(V)
2.0
3.0
OUTPUT VOLTAGE vs.
TEMPERATURE
TA (
C)
1.0
-40 0 40 80 120
2.5
1.5
T
ERR
( C)
0
2
LINEARITY ERROR vs.
TEMPERATURE
TA (
C)
-2
-40 0 40 80 120
1
-1
I CC
(
A)
60
100
INPUT CURRENT vs.
TEMPERATURE
TA (
C)
20
-40 0 40 80 120
80
40
I CC
(
A)
60
100
INPUT CURRENT vs.
INPUT VOLTAGE
VCC (V)
20
2 4 6 8 10
80
40
V
ERR
(
m
V)
0
20
LINE REGULATION
VCC (V)
-20
2 4 6 8 10
10
-10
V
ERR
(
m
V)
0
40
LOAD REGULATION
IOUT (A)
-40
-40 -20 0 20 40
20
-20
Note:
Output Voltage: V
OUT(TYP)
= 2.2 V + (-8 mV/
C) x T
A
where T
A
is in
C
Linearity Error: V
ERR
= V
OUT
- V
OUT(TYP)
T
ERR
= V
ERR
/ (-8 mV/
C)
Page 4
January 1999 TOKO, Inc.
TK11070
V
OUT
(V)
1.0
2.0
OUTPUT VOLTAGE vs.
CONTROL VOLTAGE
VCONT (V)
0
0 0.6 1.2 1.8 2.4
1.5
0.5
I CC
(
A)
40
80
INPUT CURRENT vs.
CONTROL VOLTAGE
VCONT (V)
0
0 0.6 1.2 1.8 2.4
60
20
I CONT
(
A)
2
4
CONTROL CURRENT vs.
TEMPERATURE
TA (
C)
0
-40 0 40 80 120
3
1
I CONT
(
A)
2
4
CONTROL CURRENT vs.
CONTROL VOLTAGE
VCONT (V)
0
0 0.6 1.2 1.8 2.4
3
1
V
OUT
(V)
1.0
2.0
CONTROL VOLTAGE RESPONSE A
TIME (ms)
0
0 2 4 6 8
1.5
0.5
COUT = 0.1 F
V
OUT
(V)
1.0
2.0
CONTROL VOLTAGE RESPONSE B
TIME (ms)
0
0 10 20 30 40
1.5
0.5
COUT = 0 F
RR
(dB)
40
80
RIPPLE REJECTION RATIO A
f (Hz)
0
10 100 1 k 10 k 100 k
60
20
COUT = 0.1 F
Vrr = 100 mVrms
RR (dB)
40
80
RIPPLE REJECTION RATIO B
f (Hz)
0
10 100 1 k 10 k 100 k
60
20
COUT = 0 F
Vrr = 100 mVrms
V
OUT
(V)
1.8
2.2
TEMPERATURE RESPONSE A
TIME (s)
1.4
0 20 40 60 80
2.0
1.6
25 TO 85
C
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
V
CC
= 3 V, V
CONT
= 2.4 V, I
OUT
= 0
A, T
A
= 25
C, unless otherwise specified.
January 1999 TOKO, Inc.
Page 5
TK11070
V
OUT
(V)
2.2
2.6
TEMPERATURE RESPONSE B
TIME (s)
1.8
0 20 40 60 80
2.4
2.0
25 TO -30
C
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
V
CC
= 3 V, V
CONT
= 2.4 V, I
OUT
= 0
A, T
A
= 25
C, unless otherwise specified.
Page 6
January 1999 TOKO, Inc.
TK11070
Marking Information
Marking
TK11070
70C
SOT-26 (SOT-23-6)
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-xxx-TK11070
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
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)
1.3 max
e
e
e
0.1
e1
0 - 15 max
Marking
0.3
+0.1
+0.15
- 0.05
Dimensions are shown in millimeters
Tolerance: x.x =
0.2 mm (unless otherwise specified)
+0.15
- 0.05
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