Document
ADVANCED INFORMATION ADVANCED INFORMATION FEATURES
s s s s s Linear Output Voltage 10 mV/°C Output 2.4 to 8.0 Volt Supply Range Miniature Package (SOT-23L) Minimum External Parts Count Low Power Consumption s s s s s s s s
TK11044
TEMPERATURE SENSOR IC APPLICATIONS
Home and Industrial Thermostats Automotive Climate Control Battery Charger Temperature Monitor Notebook Computer Temperature Monitor Electronic Thermometers Fish Finder Water Temperature Industrial Process Controllers Home Appliance Temperature Control
DESCRIPTION
TK11044 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.
VCC GND NC
VOUT GND NC
20 P
Note: Both GND pins must connect to GND
BLOCK DIAGRAM
VCC VCC VOUT
ORDERING INFORMATION
TEMPERATURE DETECTION CIRCUIT GND
+ GND
TK11044M-1
Tape/Reel Code
NC
NC
TAPE/REEL CODE
TL: Tape Left
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 TA = 25 °C
MIN 965 1573
TYP 995 1613 480
MAX 1025 1653
UNITS mV mV mV
V OUT
Output Voltage
TA = 85 °C TA = -25 °C
TC Line Reg Load Reg ICC IOUT
Temperature Coefficient Line Regulation Load Regulation Supply Current Output Current
TA = 25 °C to 85 °C V CC = 3 V to 5 V IOUT = 0 µA to 400 µA TA = 25 °C ∆VOUT ≤ 20 mV
9.5 -20
10.3 -5 3 160
11.1 20 20 200 400
mV/ °C mV mV µA 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.
ADVANCED INFORMATION TEST CIRCUIT
VCC
TK11044
+
VOUT COUT 0.1 µF
10 µF
TYPICAL PERFORMANCE CHARACTERISTICS
VCC = 3 V, IOUT = 0 µA, TA = 25 °C, unless otherwise specified.
LINEARITY ERROR vs. TEMPERATURE 16 8 200 180 OUTPUT VOLTAGE vs. TEMPERATURE 2.0 1.5 VOUT (V) 1.0 0.5 0 -40 .