The TDA7385 is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed for high end car radio applications.

Based on a fully complementary PNP/NPN configuration, the TDA7385 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced boundary components count allows very compact sets.

The on-board clipping detector simplifies gain compression operations. The fault diagnostics makes it possible to detect mistakes during car-radio assembly and wiring in the car.

High output power capability:

• 4 x 42 W / 4 Ω max.
• 4 x 23 W / 4 Ω @ 14.4 V, 1 kHz, 10 %

4 x 42 W / 4 Ω max.

4 x 23 W / 4 Ω @ 14.4 V, 1 kHz, 10 %

Clipping detector

Low distortion

Low output noise

Standby function

Mute function

Automute at min. supply voltage detection

Diagnostics facility for:

• Clipping
• Out to GND short
• Out to V_Sshort
• Thermal shutdown

Clipping

Out to GND short

Out to V_Sshort

Thermal shutdown

Low external component count:

• Internally fixed gain (26 dB)
• No external compensation
• No bootstrap capacitors

Internally fixed gain (26 dB)

No external compensation

No bootstrap capacitors

Protections:

• Output short circuit to GND, to V_S, across the load
• Very inductive loads
• Overrating chip temperature with soft thermal limiter
• Load dump voltage
• Fortuitous open GND
• Reversed battery
• ESD

Output short circuit to GND, to V_S, across the load

Very inductive loads

Overrating chip temperature with soft thermal limiter

Load dump voltage

Fortuitous open GND

Reversed battery

ESD