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.