EnChip AXPA17851 功放IC 音频功率放大器 替ST TDA7851

AXPA17851产品描述

AXPA17851 is a quad bridge class AB car radio audio poweramplifier designed in BCD (Bipolar, CMOS, DMOS) technology with afully complementary P-Channel/N-Channel output structure. It has arail to rail output voltage swing, high output current and lowsaturation losses, giving it an excellent distortion performance.AXPA17851 can operate down to 6V for low voltage operation toachieve 'start-stop' battery profile during engine stop enablingreduction in overall emissions.

Features

▪ Multipower BCD technology with DMOS MOSFET output powerstage

▪ Hi-Fi class low distortion

▪ Low output noise

▪ High immunity to RF noise injection

▪ Standby function

▪ Mute function

▪ Auto-mute at min. supply voltage detection

▪ Low external component count

▪ No external compensation

▪ No bootstrap capacitors

▪ Internally fixed gain (26dB)

▪ Capable to operate down to 6V (e.g. “start-stop”)

▪ High output power capability:

– 4 x 48W/4Ω Max.

– 4 x 28W/4Ω @ 14.4V, 1kHz, 10%

– 4 x 72W/2Ω Max.

▪ Protections:

– Output short circuit to GND, to Vs, across the load

– Very inductive loads

– Overrating chip temperature with soft thermal limiter

– Load dump

– Fortuitous open GND