Features • Very high voltage operation • Output clamp logic output • Thermal shutdown and mute • Customizable external compensation • Scalable output power Description The LME49810 is a high fidelity audio power amplifier driver designed for demanding consumer and pro-audio applications. Amplifier output power may be scaled by changing the supply voltage and number of power transistors. The LME49810’s minimum output current is 50mA. When using a discrete output stage the LME49810 is capable of delivering in excess of 300 watts into a single-ended 8Ω load. Unique to the LME49810 is an internal Baker Clamp. This clamp insures that the amplifier output does not saturate when over driven. The resultant “soft clipping” of high level audio signals suppresses undesirable audio artifacts generated when conventional solid state amplifiers are driven hard into clipping. The LME49810 includes thermal shutdown circuitry that activates when the die temperature exceeds 150°C. The LME49810’s mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state. Key Specification ■  Wide operating voltage range ±20V to ±100V ■  Slew Rate 50V/μs (typ) ■  Output Drive Current 60mA (typ) ■  PSRR (f = DC) 110dB (typ) ■  THD+N (f = 1kHz) 0.0007 (typ) Applications • Guitar amplifiers • Powered studio monitors • Powered subwoofers • Pro audio • Audio video receivers • High voltage industrial applications

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

Title		Size	Date	Other Language
	LME49810   200V Audio Power Amplifier Driver with Baker Clamp	867 Kbytes	17-Sep-07

Featured Application Notes

Title		Size	Date	Other Language
	AN-1850: Application Note 1850 LME49830TB Ultra-High Fidelity High Power Amplifier Reference Design	817 Kbytes	2-Dec-08	中文

More Application Notes

Title		Size	Date	Other Language
	AN-1849: Application Note 1849 An Audio Amplifier Power Supply Design	1495 Kbytes	3-Jun-08

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LME49810TB/NOPB RoHS Status	TO-247 SINGLE GAUGE	Full production Lead Time: 8 weeks	Distributor Region Qty ARROW Worldwide 120 AVNET-EM Worldwide 2 DIGIKEY Worldwide 475 FARNELL Europe and Asia 29 FUTURE Worldwide 288 NEWARK Americas 73	$3.42 each at 1K+ pcs	rail of 24

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

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Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LME49810TB	VIP III H/HU2	0	2366	0	0	702554	6	199351615

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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All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.