具有 DC 音量控制和耳机开关的 750mW 音频功率放大器
The is a mono bridged audio power amplifier with DC voltage volume control. The LM4865 is capable of delivering 750mW of continuous average power into an 8Ω load with less than 1% THD when powered by a 5V power supply. Switching between bridged speaker mode and headphone single ended mode is accomplished using the headphone sense pin. To conserve power in portable applications, the LM4865"s micropower shutdown mode IQ = 0.7µA, typ is activated when less than 300mV is applied to the DC Vol/SD pin.
Boomer audio power amplifiers are designed specifically to provide high power audio output while maintaining high fidelity. They require few external components and operate on low supply voltages.
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- DC Voltage Volume Control
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- Headphone Amplifier Mode
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- “Click and Pop” Suppression
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- Shutdown Control When Volume Control Pin Is Low
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- Thermal Shutdown Protection
## Key Specifications
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- PO at 1.0% THD+N Into 8Ω SOIC, Micro SMD 750 mW typ
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- PO at 10% THD+N Into 8Ω SOIC, Micro SMD 1W typ
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- Shutdown Current 0.7µAtyp
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- Supply Voltage Range 2.7V to 5.5 V
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