NSC LM60CMDA, LM60CIM3, LM60BIM3 Datasheet
LM60
2.7V, SOT-23 or TO-92 Temperature Sensor
General Description
The LM60 is a precision integrated-circuit temperature sensor that can sense a −40˚C to +125˚C temperature range
while operating from a single +2.7V supply. The LM60’s
output voltage is linearly proportional to Celsius (Centigrade)
temperature (+6.25 mV/˚C) and has a DC offset of +424 mV.
The offset allows reading negative temperatures without the
need for anegativesupply. The nominal output voltageofthe
LM60 ranges from +174 mV to +1205 mV for a −40˚C to
+125˚C temperature range. The LM60 is calibrated to provide accuracies of
±
2.0˚C at room temperature and±3˚C
over the full −25˚C to +125˚C temperature range.
The LM60’s linear output, +424 mV offset, and factory cali-
bration simplify external circuitry required in a single supply
environment where reading negative temperatures is required. Because the LM60’s quiescent current is less than
110µA, self-heating is limited to a very low 0.1˚C in still air in
the SOT-23 package. Shutdown capability for the LM60 is
intrinsic because its inherent low power consumption allows
it to be powered directly from the output of many logic gates.
Features
n Calibrated linear scale factor of +6.25 mV/˚C
n Rated for full −40˚ to +125˚C range
n Suitable for remote applications
n Available in SOT-23 and TO-92 packages
Applications
n Cellular Phones
n Computers
n Power Supply Modules
n Battery Management
n FAX Machines
n Printers
n HVAC
n Disk Drives
n Appliances
Key Specifications
n Accuracy at 25˚C:±2.0 and±3.0˚C (max)
n Accuracy for −40˚C to +125˚C:
±
4.0˚C (max)
n Accuracy for −25˚C to +125˚C:
±
3.0˚C (max)
n Temperature Slope: +6.25mV/˚C
n Power Supply Voltage Range: +2.7V to +10V
n Current Drain
@
25˚C: 110µA(max)
n Nonlinearity:
±
0.8˚C (max)
n Output Impedance: 800Ω (max)
Typical Application
Connection Diagrams
SOT-23
01268101
Top View
See NS Package Number MA03B
TO-92
01268123
See NS Package Number Z03A
01268102
VO= (+6.25 mV/˚C x T ˚C) + 424 mV
Temperature (T) Typical V
O
+125˚C +1205 mV
+100˚C +1049 mV
+25˚C +580 mV
0˚C +424 mV
−25˚C +268 mV
−40˚C +174 mV
FIGURE 1. Full-Range Centigrade Temperature Sensor
(−40˚C to +125˚C) Operating from a Single Li-Ion
Battery Cell
July 2001
LM60 2.7V, SOT-23 or TO-92 Temperature Sensor
© 2001 National Semiconductor Corporation DS012681 www.national.com
Ordering Information
Order
Number
Device
Marking
Supplied In
Accuracy Over
Specified
Temperature
Range
Specified
Temperature
Range
Package Type
LM60BIM3 T6B 1000 Units on Tape and Reel
±
3
−25˚C ≤ T
A
≤
+125˚C
SOT-23
LM60BIM3X T6B 3000 Units on Tape and Reel
LM60CIM3 T6C 1000 Units on Tape and Reel
±
4
−40˚C ≤ T
A
≤
+125˚C
LM60CIM3X T6C 3000 Units on Tape and Reel
LM60BIZ LM60BIZ Bulk
±
3
−25˚C ≤ T
A
≤
+125˚C
TO-92
LM60CIZ LM60CIZ Bulk
±
4
−40˚C ≤ T
A
≤
+125˚C
LM60
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Absolute Maximum Ratings (Note 1)
Supply Voltage +12V to −0.2V
Output Voltage (+V
S
+ 0.6V) to
−0.6V
Output Current 10 mA
Input Current at any pin (Note 2) 5 mA
ESD Susceptibility (Note 3) :
Human Body Model 2500V
Machine Model
SOT-23
TO-92
250V
200V
Recommended Lead Temperature
(Note 4):
SOT Package:
Vapor Phase (60 sec)
Infrared (15 sec)
TO-92 Package (3 sec, dwell time)
+215˚C
+220˚C
+240˚C
Storage Temperature −65˚C to
+150˚C
Maximum Junction Temperature
(T
JMAX
) +125˚C
Operating Ratings(Note 1)
Specified Temperature Range: T
MIN
≤ TA≤ T
MAX
LM60B −25˚C ≤ TA≤ +125˚C
LM60C −40˚C ≤ T
A
≤ +125˚C
Supply Voltage Range (+V
S
) +2.7V to +10V
Thermal Resistance, θ
JA
(Note
5)
SOT-23
TO-92
450˚C/W
180˚C/W
Electrical Characteristics
Unless otherwise noted, these specifications apply for +VS= +3.0 VDCand I
LOAD
= 1 µA. Boldface limits apply for TA=T
J
=T
MIN
to T
MAX
; all other limits TA=TJ= 25˚C.
Parameter Conditions Typical
(Note 6)
LM60B LM60C Units
(Limit)
Limits Limits
(Note 7) (Note 7)
Accuracy (Note 8)
±
2.0
±
3.0 ˚C (max)
±
3.0
±
4.0 ˚C (max)
Output Voltage at 0˚C +424 mV
Nonlinearity (Note 9)
±
0.6
±
0.8 ˚C (max)
Sensor Gain +6.25 +6.06 +6.00 mV/˚C (min)
(Average Slope) +6.44 +6.50 mV/˚C (max)
Output Impedance 800 800 Ω (max)
Line Regulation (Note 10) +3.0V ≤ +V
S
≤ +10V
±
0.3
±
0.3 mV/V (max)
+2.7V ≤ +V
S
≤ +3.3V
±
2.3
±
2.3 mV (max)
Quiescent Current +2.7V ≤ +V
S
≤ +10V 82 110 110 µA (max)
125 125 µA (max)
Change of Quiescent Current +2.7V ≤ +V
S
≤ +10V
±
5.0 µA (max)
Temperature Coefficient of 0.2 µA/˚C
Quiescent Current
Long Term Stability (Note 11) T
J=TMAX
=+125˚C, for
±
0.2 ˚C
1000 hours
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed
specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test
conditions.
Note 2: When the input voltage (V
I
) at any pin exceeds power supplies (V
I
<
GND or V
I
>
+VS), the current at that pin should be limited to 5 mA.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin. The machine model is a 200 pF capacitor discharged
directly into each pin.
Note 4: See the URL ”http://www.national.com/packaging/“ for other recomdations and methods of soldering surface mount devices.
Note 5: The junction to ambient thermal resistance (θ
JA
) is specified without a heat sink in still air.
Note 6: Typicals are at T
J=TA
= 25˚C and represent most likely parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Accuracy is defined as the error between theoutput voltage and +6.25 mV/˚C times the device’s case temperature plus 424 mV, at specified conditions of
voltage, current, and temperature (expressed in ˚C).
Note 9: Nonlinearity is defined as the deviation of the output-voltage-versus-temperature curve from the best-fit straight line, over the device’s rated temperature
range.
LM60
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