LM45

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SNIS117C – AUGUST 1999 – REVISED FEBRUARY 2013

LM45 SOT-23 Precision Centigrade Temperature Sensors

Check for Samples: LM45

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FEATURES

DESCRIPTION

The LM45 series are precision integrated-circuit

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Calibrated Directly in ° Celsius (Centigrade)

temperature sensors, whose output voltage is linearly

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Linear + 10.0 mV/°C Scale Factor

proportional to the Celsius (Centigrade) temperature.

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±3°C Accuracy Guaranteed

The LM45 does not require any external calibration or

trimming to provide accuracies of ±2°C at room

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Rated for Full

−20° to +100°C Range

temperature and ±3°C over a full

−20 to +100°C

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Suitable for Remote Applications

temperature range. Low cost is assured by trimming

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Low Cost Due to Wafer-Llevel Trimming

and calibration at the wafer level. The LM45's low

output impedance, linear output, and precise inherent

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Operates from 4.0V to 10V

calibration make interfacing to readout or control

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Less than 120

μA Current Drain

circuitry especially easy. It can be used with a single

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Low Self-Heating, 0.20°C in Still Air

power supply, or with plus and minus supplies. As it

draws only 120

μA from its supply, it has very low

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Nonlinearity Only ±0.8°C Max Over Temp

self-heating, less than 0.2°C in still air. The LM45 is

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Low Impedance Output, 20

Ω for 1 mA Load

rated to operate over a

−20° to +100°C temperature

range.

APPLICATIONS

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Battery Management

Connection Diagram

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FAX Machines

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Printers

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Portable Medical Instruments

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HVAC

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Power Supply Modules

Figure 1. SOT-23

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Disk Drives

Top View

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Computers

Package Number DBZ0003A

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Automotive

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PRODUCTION DATA information is current as of publication date.

Copyright © 1999–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.