LM4842 datasheet(9/31 Pages) NSC

Part #	LM4842

Description	Stereo 2W Amplifiers with DC Volume Control Transient Free Outputs, and Cap-less Headphone Drive

PDF	31 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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9 / 31 page

Typical Performance Characteristics

MH/LQ Specific Characteristics (Continued)

LM4842MH/LQ

Power Dissipation vs Output Power

LM4842MH/LQ (Note 17)

Power Derating Curve

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Note 17: These curves show the thermal dissipation ability of the LM4842MH/LQ at different ambient temperatures given these conditions:

500LFPM + 2in2: The part is soldered to a 2in2, 1 oz. copper plane with 500 linear feet per minute of forced-air flow across it.

2in2on bottom: The part is soldered to a 2in2, 1oz. copper plane that is on the bottom side of the PC board through 21 8 mil vias.

2in2: The part is soldered to a 2in2, 1oz. copper plane.

1in2: The part is soldered to a 1in2, 1oz. copper plane.

Not Attached: The part is not soldered down and is not forced-air cooled.

Non-MH/LQ Specific Characteristics

THD+N vs Frequency

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LM4842 Datasheet(PDF) 9 Page - National Semiconductor (TI)