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
	LM79L12 Series 3-Terminal Negative Regulators	599 Kbytes	11-Oct-11

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM79L12ACM/NOPB LM79L12ACM RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 136 AVNET-EM Worldwide 900 DIGI-KEY Worldwide 1997 FARNELL Europe and Asia 2928 MOUSER Worldwide 1535 NEWARK Americas 198 RS COMPONENTS Worldwide 210 TAYLOR Americas 1416	$0.24 each at 1K+ pcs	rail of 95
LM79L12ACMX/NOPB LM79L12ACMX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 5000 DIGI-KEY Worldwide 0 MOUSER Worldwide 2470	$0.24 each at 1K+ pcs	reel of 2500
LM79L12ACZ/NOPB RoHS Status	TO-92	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 2 AVNET-EM Worldwide 410 FARNELL Europe and Asia 3507 MOUSER Worldwide 1742 RS COMPONENTS Worldwide 880 TAYLOR Americas 1056	$0.24 each at 1K+ pcs	box of 1800
LM79L12AC MDA RoHS Status		Full production Lead Time: 6 weeks	Contact your distributor	CALL	tray of N/A

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 LM79L12.

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 LM79L12 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
LM79L12ACM/NOPB LM79L12ACM	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	N/A	N/A	NSZXTT LM79L 12ACM
LM79L12ACMX/NOPB LM79L12ACMX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	N/A	N/A	NSZXTT LM79L 12ACM
LM79L12ACZ/NOPB	201.662 202.003	TO-92	3	1	NA	Detail	N/A	N/A	NSXYTT 320L 79L12
LM79L12AC MDA	1.784	Unpackaged Die				N/A	-

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 LM79L12.

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 LM79L12 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)
LM79L12AC MDA	SLM	0	44046	0	0	3532500	1	1002356520
LM79L12ACM	SLM	0	44046	0	0	3532500	1	1002356520
LM79L12ACMX	SLM	0	44046	0	0	3532500	1	1002356520
LM79L12ACZ	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 LM79L12.

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 LM79L12 is located at RoHS Status.