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DESCRIPTION

The TDA7454 is a new BCD technology QUAD BRIDGE type of car radio amplifier in Flexiwatt25 package specially intended for car radio applications. Among the features, its superior efficiency performance coming from the internal exclusive structure, makes it the most suitable device to simplify the thermal management in high power sets. The dissipated output power under average listening condition is in fact reduced up to 50 when compared to the level provided by conventional class AB solutions.

■ HIGH OUTPUT POWER CAPABILITY:

4 x 40W/4? MAX.

4 x 35W/4? EIAJ.

4 x 25W/4? @14.4V, 1KHz, 10

4 x 60W/2? MAX.

■ 2? DRIVING CAPABILITY

■ DUAL MODE OPERATING EXTERNALLY PRESETTABLE:

CONVENTIONAL CLASS A B MODE, HIGH EFFICIENCY MODE

■ LOW EXTERNAL COMPONENTS COUNT:

– NO BOOTSTRAP CAPACITORS

– NO EXTERNAL COMPENSATION

– INTERNALLY FIXED GAIN (26dB)

■ CLIPPING DETECTOR

■ ST-BY FUNCTION (CMOS COMPATIBLE)

■ MUTE FUNCTION (CMOS COMPATIBLE)

■ AUTOMUTE AT MINIMUM SUPPLY VOLTAGE DETECTION

■ LOW RADIATION

Protections:

■ OUPUT SHORT CIRCUIT TO GND; TO VS; ACROSS THE LOAD

■ 3 STEPS OVERRATING CHIP TEMPERATURE WITH THERMAL WARNING

■ LOAD DUMP VOLTAGE

■ FORTUITOUS OPEN GND

■ LOUDSPEAKER DC CURRENT

■ ESD