Features • Calibrated directly in ° Celsius (Centigrade) • Linear + 10.0 mV/°C scale factor • ±3°C accuracy guaranteed • Rated for full -20° to +100°C range • Suitable for remote applications • Low cost due to wafer-level trimming • Operates from 4.0V to 10V • Less than 120 µA current drain • Low self-heating, 0.20°C in still air • Nonlinearity only ±0.8°C max over temp • Low impedance output, 20 for 1 mA load Description The LM45 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM45 does not require any external calibration or trimming to provide accuracies of ±2°C at room temperature and ±3°C over a full -20 to +100°C temperature range. Low cost is assured by trimming and calibration at the wafer level. The LM45's low output impedance, linear output, and precise inherent calibration make interfacing to readout or control circuitry especially easy. It can be used with a single power supply, or with plus and minus supplies. As it draws only 120 µA from its supply, it has very low self-heating, less than 0.2°C in still air. The LM45 is rated to operate over a -20° to +100°C temperature range. Applications • Battery Management • FAX Machines • Printers • Portable Medical Instruments • HVAC • Power Supply Modules • Disk Drives • Computers • Automotive

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Typical Application *click for larger image	Block Diagram click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	LM45 SOT-23 Precision Centigrade Temperature Sensors	652 Kbytes	15-Aug-05	日本語

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Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM45BIM3	LFAST1	0	19510	0	0	2605000	2	739175862
LM45BIM3X	LFAST1	0	19510	0	0	2605000	2	739175862
LM45CIM3	LFAST1	0	19510	0	0	2605000	2	739175862
LM45CIM3X	LFAST1	0	19510	0	0	2605000	2	739175862
LM45CIM3X-NIPD	LFAST1	0	19510	0	0	2605000	2	739175862

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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