XPT4978 PDF – 8W, Anti-Breaking Function Audio Amplifier

XPT4978 PDF datasheet can download. The package is ESOP 16 Pin type.

This product has Adjustable anti-breaking sound audio amplifier functions.

This is one of the semiconductor types. This part name is XPT4978.

Manufacturers of the product is XPT.

Image and pinout :

XPT4978 pdf datasheet pinout


Some of the text files within the PDF file

XPT4978 is a combination of high efficiency boost single-channel AB / D class optional (D class when the anti-broken sound) audio power amplifier circuit. The maximum able to 4Ω load speakers to provide sustained 8W power. Its low noise pulse width modulation architecture reduces the number of external components, the consumption of circuit board area, the cost of the system, and simplifies the design.

The circuit integrates a current-mode boost converter operating at a fixed frequency of 1MHz. XPT4978 in ESOP package, especially for large volume, small weight in the portable system. XPT4978 internal overheating automatic shutdown protection mechanism; AB mode, the gain bandwidth of up to 2.5MHz, and the unity gain stability.

Feedback resistor built-in, by configuring the external parameters can adjust the amplifier’s voltage gain and the best sound quality, easy to use. It is the perfect solution for your USB subwoofer, radio putting, MP3 player, trolley sound and loudspeaker.


1. Built-in boost circuit, the efficiency of up to 92%
2. No interference to FM, high efficiency, excellent sound quality
3. Unique adjustable anti-breaking function
4. AB / D class switch
5. 8W output power (10% THD, 4Ω load, 3.7V)
6. Wide operating voltage range: 2.5V ~ 8.5V
7. Excellent on the power down pop sound suppression
8. External gain adjustable, integrated feedback
[ … ]

Please refer to the file for details.

XPT4978 PDF Datasheet