LM4863 Product Overview:
LM4863 is a dual bridge stereo audio power amplifier. When inputting a working voltage of 1KHz and 5V, the maximum driving power is 3W (4Ω load, THD+N ≤ 10%). LM4863 integrates dual bridge speaker amplification and stereo headphone amplification, with a simple application circuit that only requires a few peripheral devices to provide high-quality output power. Additionally, when driving stereo headphones, the headphone input allows the amplifier to operate in single ended mode.
LM4863 adopts two types of packaging: SOP-16 and DIP-16. It can be controlled to enter shutdown mode, thereby reducing power consumption; Internally equipped with overheat automatic shutdown protection mode; Stable work and stable unit gain; There is also a function to reduce startup noise.
LM4863 Product features:
Wide working voltage range: 2.5V~5.5V
Low leakage current in power-off mode: 2μA (typical)
Output power: 3W (4Ω load, THD+N ≤ 10%)
Power on noise suppression circuit
Unit gain stability
Overheat protection function
Headphone/Stereo Mode
Adopting SOP-16/DIP-16 packaging
LMT4863 Product Usage:
Portable equipment
Desktop computer
Laptop computer
Multimedia Monitor
Portable video devices
LM4863 Ordering information:
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Product model
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package
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packing
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LM4863
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SOP-16
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3000/Disk
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LM4863
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DIP-16
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25/Tube
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LM4863 Internal schematic diagram:
LM4863 Pin Definition Diagram:
LM4863 Pin Description:
LM4863 Typical application circuit:
Note: Component description in the above application diagram
Ri: Set the input resistance for closed-loop gain together with Rf, and also form a high pass filter with Ci, with fC=1/(2 π RiCi).
Ci: Input coupling capacitor, mainly used to isolate the DC voltage at the input of the operational amplifier, and also forms a high pass filter with the input resistor Ri, fC=1/(2 π RiCi).
Rf: Set the feedback resistor for closed-loop gain together with Ri.
Cs: Provide the power bypass capacitor for the power filter, refer to the "Application Information" section to set and select the appropriate bypass capacitor.
CB: Filter capacitor for VDD/2 reference voltage bypass pin, refer to the "Application Information" section to set and select the appropriate bypass capacitor
LM4863 Package size(SOP-16):
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