Features 40W continuous average output power into 8 75W instantaneous peak output power capability Signal-to-Noise Ratio >= 95 dB(min) An input mute function Output protection from a short to ground or to the supplies via internal current limiting circuitry Output over-voltage protection against transients from inductive loads Supply under-voltage protection, not allowing internal biasing to occur when |VEE| + |VCC| <= 12V, thus eliminating turn-on and turn-off transients 11-lead TO-220 package Wide supply range 20V - 72V Description The LM2876 is a high-performance audio power amplifier capable of delivering 40W of continuous average power to an 8 load with 0.1% THD+N from 20Hz-20kHz. The performance of the LM2876, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks. The LM2876 maintains an excellent signal-to-noise ratio of greater than 95dB (min) with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.06% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%. Applications Component stereo Compact stereo Self-powered speakers Surround-sound amplifiers High-end stereo TVs

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

Parameters Values Power@ 8Ohms, 1% THD 45 Watt Power@ 8Ohms, 10% THD 50 Watt THD 0.06 % PSRR 125 dB SNR 98 dB Channels 1 Channels THD Conditions Po=25W @ Vs=±30V PSRR Conditions V+=30V to 10V, V-=-30V SNR Conditions Po=1W, Rs=25 Ohms User Supply 30 Volt Supply Range +20 - +60V Mute/Shutdown Mute Mono/Stereo Mono Gain Bandwidth 8 MHz Slew Rate 9 Volts/usec Temperature Min -20 deg C Temperature Max 85 deg C

Datasheets

Title		Size	Date	Other Language
	LM2876 High-Performance 40 Watt Audio Power Amplifier w/Mute	663 Kbytes	14-Oct-04	日本語

Application Notes

Title		Size	Date	Other Language
	AN-898: Application Note 898 Audio Amplifiers Utilizing: SPiKe Protection	1412 Kbytes	20-Sep-02	日本語

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM2876TF/NOPB LM2876TF RoHS Status	ISOLATED TO220	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 160 DIGI-KEY Worldwide 877 FARNELL Europe and Asia 339 MOUSER Worldwide 105 NEWARK Americas 339	$2.50 each at 1K+ pcs	rail of 20

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM2876T	NONE	NATIONAL SEMICONDUCTOR	05 Mar 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 LM2876.

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 LM2876 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM4733TABD	High-Performance 40 Watt Audio Power Amplifier w/Mute	Full production	Distributor Region Qty DIGI-KEY Worldwide 0	$200.00 each	1
The LM4733 is a three channel audio amplifier capable of typically delivering 30W per channel of continuous average output power into a 4Ω or 8Ω load with less than 10% THD+N from 20Hz to 20kHz. Features include short circuit protection, thermal shutdown and under voltage lockout for click and pop free power on and off. Audio Evaluation Board Documentation

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM4781TABD	High-Performance 40 Watt Audio Power Amplifier w/Mute	Full production	Distributor Region Qty DIGI-KEY Worldwide 0	$170.00 each	1
The LM4781 is a three channel audio amplifier capable oftypically delivering 35W per channel of continuous average output power into an 8? load with less than 0.5% THD+N from 20Hz to 20kHz. The LM4781 is fully protected utilizing National's Self Peak Instantaneous Temperature (ºKe) (SPiKe™) protection circuitry which completely safeguards its outputs against over-voltage, under-voltage, overloads, shorts to the supplies or GND, thermal runaway and instantaneous temperature peaks.

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM2876TF/NOPB LM2876TF	5995.061 6000.012	ISOLATED TO220	11	1 1	NA NA	Detail	N/A	N/A	NSUZXYTTE# LM2876TF

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 LM2876.

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 LM2876 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)
LM2876TF	HV700	0	14255	0	0	1582500	3	449038695

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 LM2876.

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 LM2876 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM2876T	NONE	NATIONAL SEMICONDUCTOR	05 Mar 2008