All trademarks are the property of their respective owners.
The LM4673 is a single supply, high efficiency, 2.65W, mono, Class D audio amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.
The LM4673 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.1W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V.
The LM4673 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8Ω speaker, the IC's efficiency for a 100mW power level is 80%, reaching 88% at 400mW output power.
The LM4673 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND).
The gain of the LM4673 is externally configurable which allows independent gain control from multiple sources by summing the signals. Output short circuit and thermal overload protection prevent the device from damage during fault conditions.
| Documentación principal | Tipo | Título | Opciones de formato | Descargar la versión más reciente en inglés | Fecha |
|---|---|---|---|---|---|
| * | Hoja de datos | LM4673 Filterless, 2.65W, Mono, Class D Audio Power Amplifier datasheet (Rev. D) | 1/05/2013 | ||
| Nota sobre la aplicación | Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) | 26/08/2019 | |||
| Nota sobre la aplicación | AN-1849 An Audio Amplifier Power Supply Design (Rev. C) | 27/06/2019 | |||
| Nota sobre la aplicación | AN-1737 Managing EMI in Class D Audio Applications (Rev. A) | 1/05/2013 | |||
| Nota sobre la aplicación | AN-1614 LM48510 Speaker AN- (Rev. B) | 1/05/2013 | |||
| Nota sobre la aplicación | AN-1497 Filterless Class D Amplifiers (Rev. A) | 1/05/2013 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
The LM4673 is a filterless 2.65W class D fully differential audio amplifier in an 8 pin LLP package. The LM4673 is designed to meet the demands of mobile phones and other portable communication devices. It is capable of delivering 1.24 Watts of average power to an 8 ohm load with less than 1% (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| WSON (NGQ) | 8 | Ultra Librarian |
| DSBGA (YFQ) | 9 | Ultra Librarian |
Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene alguna pregunta sobre calidad, encapsulados o pedido de productos de TI, consulte el servicio de asistencia de TI.