Features LLP space saving package Output voltage adjustable from 5V to 20V Dropout voltage typically 0.5V @ IO = 1A Output current in excess of 1A Trimmed reference voltage Reverse battery protection Internal short circuit current limit Mirror image insertion protection P + Product Enhancement tested TTL, CMOS compatible ON/OFF switch Description The LM2941 positive voltage regulator features the ability to source 1A of output current with a typical dropout voltage of 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground pin current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quiescent current with 1A of output current and an input-output differential of 5V is therefore only 30mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT  ≤ 3V). Designed also for vehicular applications, the LM2941 and all regulated circuitry are protected from reverse battery installations or two-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. Familiar regulator features such as short circuit and thermal overload protection are also provided.

5V to 20V Adjustable Regulator

Typical Application click for larger image 5V to 20V Adjustable Regulator	Connection Diagram click for larger image
Typical Performance click for larger image

Datasheets

Title		Size	Date	Other Language
	LM2941C 1A Low Dropout Adjustable Regulator	350 Kbytes	8-Jun-11	日本語

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM2941CS/NOPB LM2941CS RoHS Status	TO-263	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 449 AVNET-EM Worldwide 448 DIGI-KEY Worldwide 398 FARNELL Europe and Asia 653 MOUSER Worldwide 918 NEWARK Americas 215 RS COMPONENTS Worldwide 15 TAYLOR Americas 1043	$0.87 each at 1K+ pcs	rail of 45
LM2941CSX/NOPB LM2941CSX RoHS Status	TO-263	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 3305 AVNET-EM Worldwide 1000 DIGI-KEY Worldwide 4500 MOUSER Worldwide 389 TAYLOR Americas 3305 TECHMOSA Asia Pacific 3000	$0.87 each at 1K+ pcs	reel of 500
LM2941CT/NOPB LM2941CT RoHS Status	TO-220	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 380 AVNET-EM Worldwide 1944 DIGI-KEY Worldwide 570 FARNELL Europe and Asia 1863 MOUSER Worldwide 2052 NEWARK Americas 84 RS COMPONENTS Worldwide 479 TAYLOR Americas 1476	$0.61 each at 1K+ pcs	rail of 45

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 LM2941C.

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 LM2941C 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
LM2941CS/NOPB LM2941CS	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LM2941CS P+
LM2941CSX/NOPB LM2941CSX	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LM2941CS P+
LM2941CT/NOPB LM2941CT	1905.986 1908.876	TO-220	5	1 1	NA NA	Detail	Download	N/A	NSUZXYTTE# LM2941CT P+

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 LM2941C.

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 LM2941C is located at RoHS Status.

CAD Symbols and Models Download LM2941C CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM2941CT	SLM	0	44046	0	0	3532500	1	1002356520

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 LM2941C.

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 LM2941C is located at RoHS Status.