Features • No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary • Small Outline (SO) packaging • Compatible with PC power supplies • Thermal shutdown protection circuitry • Unity-gain stable • External gain configuration capability Description The LM4861 is a bridge-connected audio power amplifier capable of delivering 1.1W of continuous average power to an 8 load with 1% THD+N using a 5V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components using surface mount packaging. Since the LM4861 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is optimally suited for low-power portable systems. The LM4861 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4861 can be configured by external gain-setting resistors for differential gains of up to 10 without the use of external compensation components. Higher gains may be achieved with suitable compensation. Key Specification THD+N for 1kHz at 1W continuous average output power into 8 1.0% (max) Output power at 10% THD+N at 1kHz into 8 1.5W (typ) Shutdown Current 0.6µA (typ) Applications • Personal computers • Portable consumer products • Self-powered speakers • Toys and games

Also Recommended LM4834▲ Combines Functionality Of The LM4861 And LM4880 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
	LM4861 Boomer ® Audio Power Amplifier Series 1.1W Audio Power Amplifier with Shutdown Mode	278 Kbytes	4-Feb-03	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1611: Application Note 1611 LM48555 Evaluation Board	734 Kbytes	4-Apr-07

More Application Notes

Title		Size	Date	Other Language
	AN-1611: Application Note 1611 LM48555 Evaluation Board	734 Kbytes	4-Apr-07

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM4861M	CS065	2	38968	52	0	4402000	1	1249079519
LM4861MX	CS065	2	38968	52	0	4402000	1	1249079519

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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