Driving circuit for a sound outputting apparatus
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United States of America Patent
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Feb 25, 2014
Grant Date -
Jun 7, 2012
app pub date -
Dec 1, 2011
filing date -
Dec 6, 2010
priority date (Note) -
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Abstract
A driving circuit for a sound outputting apparatus includes a H-bridge and a charge pump established by six switches for driving two types of loudspeakers, respectively. The six switches include two common switches to be configured in the H-bridge and the charge pump, thereby reducing the costs and circuit area of the driving circuit.
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