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.

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

Datasheets

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
LM78L82ACZ/NOPB LM78L82ACZ RoHS	TO-92	Lifetime buy Lead Time: 8 weeks	Distributor Region Qty DIGIKEY Worldwide 0 FARNELL Europe and Asia 1522 KEIKONG Asia Pacific 9000	$0.44 each at 1K+ pcs	box of 1800

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM78L82AC MDC	NONE	NATIONAL SEMICONDUCTOR	03 Dec 2008
LM78L82ACZ	LM317LZ	NATIONAL SEMICONDUCTOR	01 Dec 2009

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM78L82ACZ	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
LM78L82AC MDC	NONE	NATIONAL SEMICONDUCTOR	03 Dec 2008
LM78L82ACZ	LM317LZ	NATIONAL SEMICONDUCTOR	01 Dec 2009