Overview
The TDA7385 is an AB class audio power amplifier designed by STMicroelectronics, specifically tailored for high-end car radio applications. It is packaged in the Flexiwatt 25 format and features a fully complementary PNP/NPN configuration, allowing for a rail-to-rail output voltage swing without the need for bootstrap capacitors. This design enables very compact sets with a reduced external component count, making it ideal for automotive audio systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | 8 - 18 | V |
| Peak Supply Voltage (t = 50 ms) | 50 | V |
| Output Peak Current (Repetitive) | 4.5 | A |
| Output Peak Current (Non-Repetitive) | 5.5 | A |
| Power Dissipation (Tcase = 70 °C) | 80 | W |
| Junction Temperature | 150 | °C |
| Storage Temperature | -55 to 150 | °C |
| Output Power (4 Ω, 1 kHz, 10 % THD) | 4 x 42 W | W |
| Output Power (4 Ω, 14.4 V, 1 kHz, 10 % THD) | 4 x 23 W | W |
| Input Impedance | 70 - 100 | kΩ |
| Standby Current Consumption | 15 | μA |
| Mute Attenuation | 80 - 90 | dB |
Key Features
- High output power capability: 4 x 42 W / 4 Ω max.
- Clipping detector for gain compression operations.
- Low distortion and low output noise.
- Standby and mute functions.
- Automute at minimum supply voltage detection.
- Diagnostics facility for clipping, output shorts, thermal shutdown, and other faults.
- Low external component count with internally fixed gain (26 dB) and no external compensation or bootstrap capacitors.
- Protections against output short circuits, very inductive loads, overrating chip temperature, load dump voltage, fortuitous open GND, reversed battery, and ESD.
Applications
The TDA7385 is primarily designed for high-end car radio applications, offering robust performance and reliability in automotive audio systems. Its compact design and comprehensive protection features make it an ideal choice for integrating into car audio systems where high-quality sound and durability are essential.
Q & A
- What is the TDA7385? The TDA7385 is an AB class audio power amplifier designed for high-end car radio applications.
- What is the maximum output power of the TDA7385? The TDA7385 can deliver up to 4 x 42 W into a 4 Ω load.
- What are the key protection features of the TDA7385? The TDA7385 includes protections against output short circuits, very inductive loads, overrating chip temperature, load dump voltage, fortuitous open GND, reversed battery, and ESD.
- Does the TDA7385 have a clipping detector? Yes, the TDA7385 features an on-board clipping detector to simplify gain compression operations.
- What is the standby current consumption of the TDA7385? The standby current consumption is 15 μA.
- What is the mute attenuation of the TDA7385? The mute attenuation is 80 - 90 dB.
- What package type is the TDA7385 available in? The TDA7385 is packaged in Flexiwatt 25.
- Is the TDA7385 RoHS compliant? Yes, the TDA7385 is RoHS compliant and comes in an ECOPACK2 package.
- What is the operating temperature range of the TDA7385? The operating temperature range is from -55 to 150 °C.
- Does the TDA7385 have diagnostic capabilities? Yes, the TDA7385 has a diagnostics facility for detecting clipping, output shorts, thermal shutdown, and other faults.
