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Power requirements of these chips?

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New Member
Hey, I have one of the LM4766's from Nat. Semi., and I am trying to figure out the power requirements of them.

Their input voltage is 20-60V typical, but they do not state anywhere the required input current.

Does anyone have any idea's?

Dan :)


Well-Known Member
Most Helpful Member
The current requirement is determined mainly by the amount of power going to the speaker load. Thus it depends upon how loud you are driving the speaker. For example 20W into an an 8Ω speaker would require about 0.7A average current and 2.2A peak current from each power supply.
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