Features • LM78L05 in micro SMD package • Output voltage tolerances of ±5% over the temperature range • Output current of 100mA • Internal thermal overload protection • Output transistor safe area protection • Internal short circuit current limit • Available in plastic TO-92 and plastic SO-8 low profile packages • No external components • Output voltages of 5.0V, 6.2V, 8.2V, 9.0V, 12V, 15V • See AN-1112 for micro SMD considerations Description The LM78LXX series of three terminal positive regulators is available with several fixed output voltages making them useful in a wide range of applications. When used as a zener diode/resistor combination replacement, the LM78LXX usually results in an effective output impedance improvement of two orders of magnitude, and lower quiescent current. These regulators can provide local on card regulation, eliminating the distribution problems associated with single point regulation. The voltages available allow the LM78LXX to be used in logic systems, instrumentation, HiFi, and other solid state electronic equipment. The LM78LXX is available in the plastic TO-92 (Z) package, the plastic SO-8 (M) package and a chip sized package (8-Bump micro SMD) using National's micro SMD package technology. With adequate heat sinking the regulator can deliver 100mA output current. Current limiting is included to limit the peak output current to a safe value. Safe area protection for the output transistors is provided to limit internal power dissipation. If internal power dissipation becomes too high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating.

Also Recommended LM3480▲ Better Line/Load/Dropout Voltage MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

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

Datasheet

Title		Size	Date	Other Language
	LM78LXX Series 3-Terminal Positive Regulators	685 Kbytes	4-Apr-06

Featured Application Notes

Title		Size	Date	Other Language
	AN-1883: Application Note 1883 LM7705 Evaluation Board	411 Kbytes	19-May-09	中文

More Application Notes

Title		Size	Date	Other Language
	AN-1155: Application Note 1155 A Simple Software I2C Routine for the COP8	82 Kbytes	15-May-04
	AN-1256: Application Note 1256 Tiny Temperature Sensors for Portable Systems	66 Kbytes	1-Oct-02

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LM78L12ACM/NOPB LM78L12ACM RoHS	SOIC NARROW	Full production Lead Time: 8 weeks	Distributor Region Qty ARROW Worldwide 1488 AVNET-EM Worldwide 781 DIGIKEY Worldwide 2891 FARNELL Europe and Asia 4098 FUTURE Worldwide 1100 NEWARK Americas 1067 RS COMPONENTS Worldwide 708 TAYLOR Americas 2513	$0.23 each at 1K+ pcs	rail of 95
LM78L12ACMX/NOPB LM78L12ACMX RoHS	SOIC NARROW	Full production Lead Time: 8 weeks	Distributor Region Qty ARROW Worldwide 2500 DIGIKEY Worldwide 2500 FUTURE Worldwide 1100 KEIKONG Asia Pacific 12500	$0.23 each at 1K+ pcs	reel of 2500
LM78L12ACZ/NOPB LM78L12ACZ RoHS		Full production Lead Time: 8 weeks	Distributor Region Qty ARROW Worldwide 3324 AVNET-EM Worldwide 4269 DIGIKEY Worldwide 2725 FARNELL Europe and Asia 10504 FUTURE Worldwide 1100 NEWARK Americas 2651 RS COMPONENTS Worldwide 2155 TAYLOR Americas 15701	$0.23 each at 1K+ pcs	box of 1800

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM78L12AC MWC	NONE	NATIONAL SEMICONDUCTOR	03 Dec 2008
LM78L12ACH	NONE	NONE	08 Sep 1999

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM78L12ACM	SLM	0	44046	0	0	3532500	1	1002356520
LM78L12ACMX	SLM	0	44046	0	0	3532500	1	1002356520
LM78L12ACZ	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.

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Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM78L12AC MWC	NONE	NATIONAL SEMICONDUCTOR	03 Dec 2008
LM78L12ACH	NONE	NONE	08 Sep 1999