Overview
The TDA7388A, produced by STMicroelectronics, is an AB class audio power amplifier designed specifically 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 amplifier is known for its high output power capability, low distortion, and low output noise, making it an ideal choice for automotive audio systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage (VS) | 18 | V |
| DC Supply Voltage (VS DC) | 28 | V |
| Peak Supply Voltage (VS pk, t = 50 ms) | 50 | V |
| Output Peak Current (Repetitive, duty cycle 10% at f = 10 Hz) | 4.5 | A |
| Output Peak Current (Non-repetitive, t = 100 µs) | 5.5 | A |
| Power Dissipation (Tcase = 70 °C) | 80 | W |
| Junction Temperature | 150 | °C |
| Storage Temperature | -55 to 150 | °C |
| Thermal Resistance Junction-to-Case | 1 | °C/W |
| Output Power (4 Ω, 14.4 V, 1 kHz, 10% THD) | 4 x 26 W | W |
| Output Power (4 Ω, max.) | 4 x 45 W | W |
Key Features
- High output power capability: up to 4 x 45 W / 4 Ω max.
- Low distortion and low output noise.
- Standby and mute functions.
- Automute at minimum supply voltage detection.
- Low external component count: internally fixed gain (26 dB), no external compensation, and no bootstrap capacitors.
- Comprehensive protection features including output short circuit to ground, to VS, across the load, very inductive loads, overrating chip temperature with soft thermal limiter, load dump voltage, fortuitous open GND, and reversed battery.
- ESD protection.
Applications
The TDA7388A is primarily designed for high-end car radio applications, where high-quality audio performance and robust protection features are essential. It is suitable for use in automotive audio systems that require high power output, low distortion, and reliable operation under various conditions.
Q & A
- What is the maximum output power of the TDA7388A?
The TDA7388A can deliver up to 4 x 45 W of output power into a 4 Ω load. - What is the typical supply voltage for the TDA7388A?
The typical DC supply voltage for the TDA7388A is 14.4 V. - Does the TDA7388A have built-in protection features?
Yes, the TDA7388A includes several protection features such as output short circuit protection, thermal protection, load dump voltage protection, and more. - What is the thermal resistance junction-to-case of the TDA7388A?
The thermal resistance junction-to-case of the TDA7388A is 1 °C/W. - Is the TDA7388A suitable for automotive applications?
Yes, the TDA7388A is specifically designed for high-end car radio applications. - Does the TDA7388A require external compensation or bootstrap capacitors?
No, the TDA7388A does not require external compensation or bootstrap capacitors due to its internally fixed gain and design. - What is the storage temperature range for the TDA7388A?
The storage temperature range for the TDA7388A is -55 to 150 °C. - Does the TDA7388A have standby and mute functions?
Yes, the TDA7388A includes standby and mute functions. - How does the TDA7388A handle inductive loads?
The TDA7388A is designed to handle very inductive loads as part of its protection features. - Is the TDA7388A protected against ESD?
Yes, the TDA7388A includes ESD protection.
