TDA7391PD is a 32W bridge car radio amplifier with high power capability. It can operate either in DIFFERENTIAL INPUT MODE or SINGLE ENDED INPUT MODE. It has an internal fixed gain configuration which reduces the external component count.
The TDA7391PD is a bridge‑class AB audio power amplifier intended for high‑power car‑radio applications. It can operate with either differential or single‑ended inputs, features an internally fixed gain of 30 dB, and requires no external bootstrap capacitors, reducing component count.
Electrical specifications include a supply voltage range of 8‑18 V, typical output power of 32 W into a 3.2 Ω load at 14.4 V, quiescent current of 60‑150 mA, and built‑in protections such as short‑circuit, over‑temperature, and clipping detection. The device also provides standby and mute functions with very low standby current.
| Supply Voltage Range | 8 V – 18 V |
|---|---|
| Voltage Gain | 30 dB |
| Standby Current | 100 pA |
The maximum DC supply voltage is 28 V.
The standby current is 100 pA when the standby pin is at 1.5 V.
The differential input impedance is 36 kΩ to 60 kΩ, and single‑ended is 30 kΩ to 55 kΩ.