LM62BIM3/NOPB National Semiconductor, LM62BIM3/NOPB Datasheet

IC, TEMPERATURE SENSOR, ± 2°C, 3-SOT-23

LM62BIM3/NOPB

Manufacturer Part Number
LM62BIM3/NOPB
Description
IC, TEMPERATURE SENSOR, ± 2°C, 3-SOT-23
Manufacturer
National Semiconductor
Datasheet

Specifications of LM62BIM3/NOPB

Ic Output Type
Voltage
Sensing Accuracy Range
± 2°C
Supply Current
82µA
Supply Voltage Range
2.7V To 10V
Sensor Case Style
SOT-23
No. Of Pins
3
Msl
MSL 1 - Unlimited
Accuracy %
2°C
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
© 2010 National Semiconductor Corporation
2.7V, 15.6 mV/°C SOT-23 Temperature Sensor
General Description
The LM62 is a precision integrated-circuit temperature sensor
that can sense a 0°C to +90°C temperature range while op-
erating from a single +3.0V supply. The LM62's output voltage
is linearly proportional to Celsius (Centigrade) temperature
(+15.6 mV/°C) and has a DC offset of +480 mV. The offset
allows reading temperatures down to 0°C without the need for
a negative supply. The nominal output voltage of the LM62
ranges from +480 mV to +1884 mV for a 0°C to +90°C tem-
perature range. The LM62 is calibrated to provide accuracies
of ±2.0°C at room temperature and +2.5°C/−2.0°C over the
full 0°C to +90°C temperature range.
The LM62's linear output, +480 mV offset, and factory cali-
bration simplify external circuitry required in a single supply
environment where reading temperatures down to 0°C is re-
quired. Because the LM62's quiescent current is less than
130 μA, self-heating is limited to a very low 0.2°C in still air.
Shutdown capability for the LM62 is intrinsic because its in-
herent low power consumption allows it to be powered directly
from the output of many logic gates.
Connection Diagram
LM62BIM3
LM62BIM3X
LM62CIM3
LM62CIM3X
Number
Order
See NS Package Number mf03a
Top Mark
Device
Ordering Information
T7B
T7B
T7C
T7C
Top View
SOT-23
1000 Units, Tape and Reel
3000 Units, Tape and Reel
1000 Units, Tape and Reel
3000 Units, Tape and Reel
10089301
Supplied As
100893
LM62
Features
Applications
Key Specifications
Typical Application
FIGURE 1. Full-Range Centigrade Temperature Sensor
Calibrated linear scale factor of +15.6 mV/°C
Rated for full 0°C to +90°C range with 3.0V supply
Suitable for remote applications
Cellular Phones
Computers
Power Supply Modules
Battery Management
FAX Machines
Printers
HVAC
Disk Drives
Appliances
Accuracy at 25°C
Temperature Slope
Power Supply Voltage Range
Current Drain @ 25°C
Nonlinearity
Output Impedance
V
O
= (+15.6 mV/°C × T°C) + 480 mV
Temperature (T)
Stabilizing a Crystal Oscillator
+90°C
+70°C
+25°C
0°C
(0°C to +90°C)
Typical V
+1884 mV
+1572 mV
+480 mV
870 mV
±2.0 or ±3.0°C (max)
10089302
February 8, 2010
+2.7V to +10V
O
www.national.com
130 μA (max)
±0.8°C (max)
+15.6 mV/°C
4.7 kΩ (max)

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LM62BIM3/NOPB Summary of contents

Page 1

... Units, Tape and Reel LM62CIM3 T7C 1000 Units, Tape and Reel LM62CIM3X T7C 3000 Units, Tape and Reel © 2010 National Semiconductor Corporation LM62 Features ■ Calibrated linear scale factor of +15.6 mV/°C ■ Rated for full 0°C to +90°C range with 3.0V supply ■ ...

Page 2

... This is especially true when a small (Surface-Mount) part is wave-soldered; allow time for stress relaxation to occur. The majority of the drift will occur in the first 1000 hours at elevated temperatures. The drift after 1000 hours will not continue at the first 1000 hour rate. ...

Page 3

... Still Air with Heat Sink Thermal Response in Still Air without a Heat Sink To generate these curves the LM62 was mounted to a printed Thermal Time Constant 10089303 10089305 10089308 3 10089304 Thermal Response in Stirred Oil Bath with Heat Sink 10089306 Quiescent Current vs. Temperature 10089309 www.national.com ...

Page 4

... Accuracy vs Temperature Supply Voltage vs Supply Current Circuit Board FIGURE 2. Printed Circuit Board Used for Heat Sink to Generate All Curves. ½ Square Printed Circuit Board with 2 oz. www.national.com 10089310 10089312 10089314 Copper Foil or Similar. 4 Noise Voltage 10089311 Start-Up Response 10089322 ...

Page 5

... LM62 or its connections. The thermal resistance junction to ambient (θ rameter used to calculate the rise of a device junction tem- perature due to its power dissipation. For the LM62 the equation used to calculate the rise in the die temperature is as follows: + θ T ...

Page 6

Applications Circuits FIGURE 8. Conserving Power Dissipation with Shutdown www.national.com FIGURE 6. Simplified Schematic FIGURE 7. Centigrade Thermostat 6 10089317 10089318 10089319 ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted SOT-23 Molded Small Outline Transistor Package (M3) Order Number LM62BIM3 or LM62CIM3 NS Package Number mf03a 7 www.national.com ...

Page 8

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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