The STA540 is a 4-channel, class-AB audio amplifier designed for high quality sound applications.

The amplifiers have single-ended outputs with integrated short-circuit protection, thermal protection and diagnostic functions.

The chip is housed in the 15-pin Multiwatt ECOPACK® Pb-free package which is RoHS (2002/95/EC) compliant.

Features:

• High output power capability

– 2x 38 W into 4 Ω at 18 V, 1 kHz, 10% THD

– 2x 34 W into 8 Ω at 22 V, 1 kHz, 10% THD

– 2x 24W into 4Ω at 14.4 V, 1 kHz, 10% THD

– 2x 15 W into 8 Ω at 16 V, 1 kHz, 10% THD

– 4x 13 W into 2 Ω at 15 V, 1 kHz, 10% THD

– 4x 11 W into 4 Ω at 18 V, 1 kHz, 10% THD

– 4x 7 W into 4 Ω at 14.4 V, 1 kHz, 10% THD

• Minimum external components count:

– no bootstrap capacitors

– no Boucherot cells

– internally fixed gain 20 dB

• Standby function (CMOS compatible)
• No audible pop during standby operations
• Diagnostic facilities:

– clip detector

– output to GND short-circuit detector

– output to VS short-circuit detector

– soft short-circuit check at turn-on

– thermal shutdown warning

Package: Multiwatt15

Link to datasheet: https://www.st.com/resource/en/datasheet/sta540.pdf