TDA7383 is a four-way bridge car radio amplifier produced by Texas Instruments. It features high output power, low distortion, low noise, switch-on and switch-off functions, mute function, automatic mute function, and diagnostic function.
The TDA7383 is a class‑AB audio power amplifier in a Flexiwatt‑25 package, designed for high‑end car‑radio applications. It delivers up to 35 W per channel with low distortion, built‑in clipping detection and extensive protection features.
The document provides electrical characteristics, absolute maximum ratings, pinout, thermal data, application hints and mechanical dimensions, enabling designers to integrate the device into automotive audio systems.
| Operating Supply Voltage (Veco) | 18 V |
|---|---|
| Peak Supply Voltage (Vee pk, t=50 ms) | 50 V |
| Output Peak Current (Repetitive, 10 % duty, 10 Hz) | 45 A |
| Output Peak Current (Non‑Repetitive, t = 100 µs) | 5.5 A |
| Power Dissipation (Tcase = 70 °C) | 80 W |
| Junction Temperature (Tj) | 150 °C |
| Quiescent Current (Iq) | 180 mA min / 300 mA typ |
| Output Noise (Weighted) | 75 µV |
| Supply Voltage Rejection (SVR, 100 Hz) | 50 dB min / 65 dB typ |
| Input Impedance (Ri) | 70 kΩ min / 100 kΩ typ |
| Stand‑By Current Consumption | 100 µA |
The device can deliver up to 35 W per channel at a 14.4 V supply (THD = 10 %).
The standby current consumption is specified as 100 µA (low).
The input impedance is 70 kΩ minimum and 100 kΩ typical.