Features Preset output voltage error is less than ±5% overload, line and temperature Specified at an output current of 100mA Easily compensated with a small 0.1μF output capacitor Internal short-circuit, thermal and safe operating area protection Easily adjustable to higher output voltages Maximum line regulation less than 0.07% VOUT/V Maximum load regulation less than 0.01% VOUT/mA See AN-1112 for micro-SMD considerations Description The LM79LXXAC series of 3-terminal negative voltage regulators features fixed output voltages of −5V, −12V, and −15V with output current capabilities in excess of 100mA. These devices were designed using the latest computer techniques for optimizing the packaged IC thermal/electrical performance. The LM79LXXAC series, when combined with a minimum output capacitor of 0.1μF, exhibits an excellent transient response, a maximum line regulation of 0.07% VO/V, and a maximum load regulation of 0.01% VO/mA. The LM79LXXAC series also includes, as self-protection circuitry: safe operating area circuitry for output transistor power dissipation limiting, a temperature independent short circuit current limit for peak output current limiting, and a thermal shutdown circuit to prevent excessive junction temperature. Although designed primarily as fixed voltage regulators, these devices may be combined with simple external circuitry for boosted and/or adjustable voltages and currents. The LM79LXXAC series is available in the 3-lead TO-92 package, the 8-lead SOIC package, and the 6-Bump micro-SMD package. For output voltages other than the pre-set -5V, -12V and -15V, the LM137L series provides an adjustable output voltage range from -1.2V to -47V.

LM79LxxACZ Typical Application

Typical Application click for larger image LM79LxxACZ Typical Application	Connection Diagram click for larger image LM79LxxACMT 6-Bump u-SMD Connection Diagram
Typical Performance click for larger image Power Dissipation TO-92

Datasheets

Title		Size	Date	Other Language
	LM79L05 Series 3-Terminal Negative Regulators	599 Kbytes	11-Oct-11

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM79L05ACM/NOPB LM79L05ACM RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1827 AVNET-EM Worldwide 1536 DIGI-KEY Worldwide 2213 FARNELL Europe and Asia 5261 NEWARK Americas 1057 RS COMPONENTS Worldwide 487 TAYLOR Americas 4959	$0.24 each at 1K+ pcs	rail of 95
LM79L05ACMX/NOPB LM79L05ACMX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 7675 AVNET-EM Worldwide 7500 BRITESTONE South Korea 2500 DIGI-KEY Worldwide 5000 MOUSER Worldwide 2478 TAYLOR Americas 7675	$0.24 each at 1K+ pcs	reel of 2500
LM79L05ACTL/NOPB RoHS Status	MICRO SMD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0 MOUSER Worldwide 1500	$0.26 each at 1K+ pcs	reel of 250
LM79L05ACTLX/NOPB RoHS Status	MICRO SMD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0 MOUSER Worldwide 3000	$0.26 each at 1K+ pcs	reel of 3000
LM79L05ACZ/NOPB RoHS Status	TO-92	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1310 AVNET-EM Worldwide 1171 DIGI-KEY Worldwide 1800 FARNELL Europe and Asia 352 NEWARK Americas 1490 RS COMPONENTS Worldwide 540 TAYLOR Americas 1918 TECHMOSA Asia Pacific 1800	$0.24 each at 1K+ pcs	box of 1800

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM79L05AC MDA	NONE	NATIONAL SEMICONDUCTOR	03 Dec 2008
LM79L05AC MWA	NONE	NATIONAL SEMICONDUCTOR	03 Dec 2008

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 LM79L05.

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 LM79L05 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
LM79L05ACM/NOPB LM79L05ACM	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	N/A	N/A	NSZXTT LM79L 05ACM
LM79L05ACMX/NOPB LM79L05ACMX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	N/A	N/A	NSZXTT LM79L 05ACM
LM79L05ACTL/NOPB	2.086	MICRO SMD	6	1	260	Detail	N/A	N/A	XVP I B
LM79L05ACTLX/NOPB	2.086 2.167	MICRO SMD	6	1	260	Detail	N/A	N/A	XVP I B
LM79L05ACZ/NOPB	201.662 202.003	TO-92	3	1	NA	Detail	N/A	N/A	NSXYTT 320L 79L05

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 LM79L05.

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 LM79L05 is located at RoHS Status.

CAD Symbols and Models N/A

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM79L05ACM	SLM	0	44046	0	0	3532500	1	1002356520
LM79L05ACMX	SLM	0	44046	0	0	3532500	1	1002356520
LM79L05ACTL	DLM	0	10565	0	0	1990000	2	546224006
LM79L05ACTLX	DLM	0	10565	0	0	1990000	2	546224006
LM79L05ACZ	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 LM79L05.

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 LM79L05 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM79L05AC MDA	NONE	NATIONAL SEMICONDUCTOR	03 Dec 2008
LM79L05AC MWA	NONE	NATIONAL SEMICONDUCTOR	03 Dec 2008