Features Calibrated linear scale factor of +10 mV/°C Rated for full −30° to +100°C range Suitable for remote applications UL Recognized Component Description The LM61 is a precision integrated-circuit temperature sensor that can sense a −30°C to +100°C temperature range while operating from a single +2.7V supply. The LM61's output voltage is linearly proportional to Celsius (Centigrade) temperature (+10 mV/°C) and has a DC offset of +600 mV. The offset allows reading negative temperatures without the need for a negative supply. The nominal output voltage of the LM61 ranges from +300 mV to +1600 mV for a −30°C to +100°C temperature range. The LM61 is calibrated to provide accuracies of ±2.0°C at room temperature and ±3°C over the full −25°C to +85°C temperature range. The LM61's linear output, +600 mV offset, and factory calibration simplify external circuitry required in a single supply environment where reading negative temperatures is required. Because the LM61's quiescent current is less than 125 μA, self-heating is limited to a very low 0.2°C in still air. Shutdown capability for the LM61 is intrinsic because its inherent low power consumption allows it to be powered directly from the output of many logic gates. Key Specification ■  Accuracy at 25°C ±2.0 or ±3.0°C (max) ■  Accuracy for −30°C to +100°C ±4.0°C (max) ■  Accuracy for −25°C to +85°C ±3.0°C (max) ■  Temperature Slope   +10 mV/°C ■  Power Supply Voltage Range +2.7V to +10V ■  Current Drain @ 25°C 125 µA (max) ■  Nonlinearity ±0.8°C (max) ■  Output Impedance 800 Ω (max) Applications Cellular Phones Computers Power Supply Modules Battery Management FAX Machines Printers HVAC Disk Drives Appliances

Also Recommended LM94022▲ Lower Power, Lower Minimum Supply Voltage & Greater Source Current LM20▲ Smaller Package & Lower Power LM62▲ Downgrade

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

Datasheets

Title		Size	Date	Other Language
	LM61 2.7V, SOT-23 or TO-92 Temperature Sensor	395 Kbytes	9-Feb-10	日本語

Other Technical Documents

Title		Type	Date
	Temperature-Sensor Circuit Provides Dual-Slope Output	External Article	2002-01-21
	Temperature Sensor Circuit Provides Dual-Slope Output	Technology Edge	2002-05-01
	Tiny Temperature Sensors for Remote Systems	App Note	2003-02-17

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM61BIM3/NOPB LM61BIM3 RoHS Status	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 3216 AVNET-EM Worldwide 1000 DIGI-KEY Worldwide 4000 FARNELL Europe and Asia 3031 MOUSER Worldwide 955 NEWARK Americas 3739 RS COMPONENTS Worldwide 319 RSL MICRO Asia Pacific 2000 TAYLOR Americas 3216	$0.43 each at 1K+ pcs	reel of 1000
LM61BIM3X/NOPB LM61BIM3X RoHS Status	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 6000 DIGI-KEY Worldwide 0 MOUSER Worldwide 3000	$0.43 each at 1K+ pcs	reel of 3000
LM61BIZ/NOPB RoHS Status	TO-92	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1177 AVNET-EM Worldwide 1701 DIGI-KEY Worldwide 773 FARNELL Europe and Asia 3018 NEWARK Americas 122 RS COMPONENTS Worldwide 560 TAYLOR Americas 1177	$0.39 each at 1K+ pcs	box of 1800
LM61CIM3/NOPB LM61CIM3 RoHS Status	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 34090 AVNET-EM Worldwide 18000 CEAC Asia Pacific 5000 DIGI-KEY Worldwide 6446 FARNELL Europe and Asia 4591 MOUSER Worldwide 1813 NEWARK Americas 1523 RS COMPONENTS Worldwide 435 TAYLOR Americas 34090 TECHMOSA Asia Pacific 3000	$0.30 each at 1K+ pcs	reel of 1000
LM61CIM3X/NOPB LM61CIM3X RoHS Status	SOT-23	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 3000 DIGI-KEY Worldwide 0 MOUSER Worldwide 2810 TAYLOR Americas 6000	$0.30 each at 1K+ pcs	reel of 3000
LM61CIZ/NOPB RoHS Status	TO-92	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 402 AVNET-EM Worldwide 1025 DIGI-KEY Worldwide 1211 TAYLOR Americas 402	$0.25 each at 1K+ pcs	box of 1800

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM61DIM3X	LM61BIM3	NATIONAL SEMICONDUCTOR	03 Mar 2006

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM61.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM61 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM61BIM3/NOPB LM61BIM3	10.34 10.399	SOT-23	3	1 1	260 260	Detail	Download	N/A	T1B XTT
LM61BIM3X/NOPB LM61BIM3X	10.34 10.399	SOT-23	3	1 1	260 260	Detail	Download	N/A	T1B XTT
LM61BIZ/NOPB	201.662 202.003	TO-92	3	1	NA	Detail	Download	N/A	NSXYTT LM61 BIZ
LM61CIM3/NOPB LM61CIM3	10.34 10.399	SOT-23	3	1 1	260 260	Detail	Download	N/A	T1C XTT
LM61CIM3X/NOPB LM61CIM3X	10.34 10.399	SOT-23	3	1 1	260 260	Detail	Download	N/A	T1C XTT
LM61CIZ/NOPB	201.662 202.003	TO-92	3	1	NA	Detail	Download	N/A	NSXYTT LM61 CIZ

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM61.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM61 is located at RoHS Status.

CAD Symbols and Models Download LM61 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM61BIM3	LFAST1	0	20140	0	0	2785000	2	790251354
LM61BIM3X	LFAST1	0	20140	0	0	2785000	2	790251354
LM61BIZ	LFAST1	0	20140	0	0	2785000	2	790251354
LM61CIM3	LFAST1	0	20140	0	0	2785000	2	790251354
LM61CIM3X	LFAST1	0	20140	0	0	2785000	2	790251354
LM61CIZ	LFAST1	0	20140	0	0	2785000	2	790251354

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.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM61.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM61 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM61DIM3X	LM61BIM3	NATIONAL SEMICONDUCTOR	03 Mar 2006