Temperature Sensors. LMT88 Datasheet

LMT88 Sensors. Datasheet pdf. Equivalent

Part LMT88
Description Temperature Sensors
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LMT88
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LMT88
SNIS175A – MARCH 2013 – REVISED JANUARY 2015
LMT88 2.4-V, 10-µA, SC-70 Temperature Sensor
1 Features
1 Cost-Effective Alternative to Thermistors
• Rated for Full 55°C to 130°C Range
• Available in an SC70 Package
• Predictable Curvature Error
• Suitable for Remote Applications
2 Applications
• Industrial
• HVAC
• Disk Drives
• Automotive
• Portable Medical Instruments
• Computers
• Battery Management
• Printers
• Power Supply Modules
• FAX Machines
• Mobile Phones
• Automotive
3 Description
The LMT88 device is a precision analog output
CMOS integrated-circuit temperature sensor that
operates over a temperature range of 55°C to
130°C . The power supply operating range is 2.4 V to
5.5 V. The transfer function of LMT88 is
predominately linear, yet has a slight predictable
parabolic curvature. The accuracy of the LMT88
when specified to a parabolic transfer function is
typically ±1.5°C at an ambient temperature of 30°C.
The temperature error increases linearly and reaches
a maximum of ±2.5°C at the temperature range
extremes. The temperature range is affected by the
power supply voltage. At a power supply voltage of
2.7 V to 5.5 V, the temperature range extremes are
130°C and 55°C. Decreasing the power supply
voltage to 2.4 V changes the negative extreme to
30°C, while the positive remains at 130°C.
The LMT88 quiescent current is less than 10 μA.
Therefore, self-heating is less than 0.02°C in still air.
Shutdown capability for the LMT88 is intrinsic
because its inherent low power consumption allows it
to be powered directly from the output of many logic
gates or does not necessitate shutdown at all.
The LMT88 is a cost-competitive alternative to
thermistors.
Simplified Schematic
+2.4V to +5.5V
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
LMT88
SOT (5)
2.00 mm × 1.25 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Output Voltage vs Temperature
V+ VO
LMT88
To MCU ADC
GND NC
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



LMT88
LMT88
SNIS175A – MARCH 2013 – REVISED JANUARY 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 6
7 Detailed Description .............................................. 7
7.1 Overview ................................................................... 7
7.2 Functional Block Diagram ......................................... 7
7.3 Feature Description................................................... 7
7.4 Device Functional Modes.......................................... 8
8 Application and Implementation .......................... 9
8.1 Application Information.............................................. 9
8.2 Typical Applications ................................................ 10
8.3 System Examples ................................................... 13
9 Power Supply Recommendations...................... 13
10 Layout................................................................... 14
10.1 Layout Guidelines ................................................. 14
10.2 Layout Example .................................................... 14
10.3 Thermal Considerations ........................................ 14
11 Device and Documentation Support ................. 16
11.1 Trademarks ........................................................... 16
11.2 Electrostatic Discharge Caution ............................ 16
11.3 Glossary ................................................................ 16
12 Mechanical, Packaging, and Orderable
Information ........................................................... 16
4 Revision History
Changes from Original (March 2013) to Revision A
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section ............................... 1
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