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Features

? MOSFET (DMOS) output power stage

? High-efficiency (class SB)

? Single-channel 1 Ω driving capability

– 84 W undistorted power

? High output power capability 2 x 28 W / 4 Ω @

14.4 V, 1 kHz, 10 THD

? Max. output power 2 x 75 W / 2 Ω,

1 x 150 W / 1 Ω

? Full I2C bus driving with 4 addresses

? Low voltage (6 V) operation (i.e. 'start-stop')

? Gain 16/26 dB

? Full digital diagnostic (AC and DC loads)

? Legacy mode (operation without I2C)

? Differential inputs

? Fault detection through integrated diagnostics

? DC offset detection

? Two independent short circuit protections

? Diagnostic on clipping detector with selectable

threshold (2 / 10 )

? Clipping detector pin

? ST-BY and MUTE pins

? ESD protection

? Very robust against misconnections

Description

The TDA7577BLV is a new MOSFET dual bridge

amplifier specially intended for car radio

applications. Thanks to the DMOS output stage

the TDA7577BLV has a very low distortion

allowing a clear powerful sound, together with

high output power capability.

It is a very flexible device capable to support the

most demanding specifications in terms of power

dissipation and battery transitions: its superior

efficiency performance, coming from the internal

exclusive structure, can reduce the dissipated

output power up to the 50 (when compared to

conventional class AB solutions). Moreover it is

compliant to the recent OEM specifications

thanks to the capability to work down to 6 V

('start-stop' compatibility).

This device is also equipped with a full diagnostic

array that communicates the status of each

speaker through the I2C bus. TDA7577BLV can

also drive 1 Ω loads (with parallel connection of

the outputs).

It is possible also to exclude the I2C bus interface,

controlling the device by means of the usual STBY

and MUTE pins.