Conozca este circuito integrado diseñado para amplificadores de audio mono y estéreo de automóviles con una potencia de 22 vatios (BTL) o 11 vatios por canal en la configuración estéreo. Con encapsulado SIL 13 pines su montaje en un disipador es fácil y los pocos componentes periféricos necesarios simplificar los proyectos.

Nota: el artículo es da década de 80.

 

   Amplificadores de audio de buena potencia con circuitos integrados para automóviles deben tener características que hacen su uso interesante en términos profesionales.

   El TDA 15180 forma parte de una línea de circuitos integrados de potencia de audio, diseñada especialmente para aplicaciones automotrices.

   Sus características son justamente las que se exigen para un equipo de buen desempeño, simple y con alta confiabilidad entre las cuales destacamos:

   Exigencia de pocos componentes externos

   Flexibilidad en el uso - puede funcionar tanto mono (BTL) como estéreo.

   Alta potencia de salida sin necesidad de arranque

   Ganancia fija

   Buena rechazo de ondulación

   Posee llave stand-by / mute

   Posee diversos tipos de protección incluso térmica

   Terminales flexibles

   Baja resistencia térmica

   Entradas inversoras y no inversoras idénticas

   Y compatible con el TDA1516Q

   La ganancia de este amplificador del integrado TDA1518Q es de 40 dB y como recurso especial él posee la llave stand-by.

   En esta condición, el consumo de corriente va a menos de 100 uA.

   Las características principales se dan en la tabla 1.

 

Tabla 1
Tabla 1 | Haga click en la imagen para ampliar |

 

   

En la figura 1 tenemos el diagrama de bloques equivalentes al circuito integrado.

 

   Figura 1 - Diagrama de bloques internos del TDA1518Q
   Figura 1 - Diagrama de bloques internos del TDA1518Q | Haga click en la imagen para ampliar |

 

   

 Los límites absolutos son los siguientes:

   Tensión de alimentación en funcionamiento: 18 V

   Tensión de alimentación fuera de funcionamiento: 30 V

   Tensión inversa: 6 V

   Capacidad de manejo de las salidas: 200 mJ

   Corriente de pico de salida no repetitiva: 6 A

   Corriente de pico repetitiva: 4 A

   Disipación total: 15 W

   Temperatura del cristal: 150 ° C

   Rango de temperaturas de almacenamiento: -65 a + 150 ° C

   En la figura 2 tenemos la configuración para aplicaciones estéreo.

 

  Figura 2 - Configuración estéreo
  Figura 2 - Configuración estéreo | Haga click en la imagen para ampliar |

 

   

En la figura 3 tenemos la configuración para aplicación BTL.

 

   Figura 3 - Configuración BTL
   Figura 3 - Configuración BTL | Haga click en la imagen para ampliar |

 

    

 

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