This part is a kind of semiconductor called AN17823.

Function of this product has BTL 4.0W x 1CH POWER AMPLIFIER.

Manufacturers : UTC

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD AN17823 Preliminary LINEAR INTEGRATED CIRCUIT BTL 4.0W X 1CH POWER AMPLIFIER „ DESCRIPTION The U TC A N17823 is BT L 4 .0W x 1CH po wer amplifi er w ith standby function and volume function. „ FEATURES * 3-W output (8Ω) with supply voltage of 8V * 4-W output (8Ω) with supply voltage of 9V * On-chip standby function * On-chip volume function „ ORDERING INFORMATION Ordering Number Lead Free Halogen Free AN17823L-H09-B-T AN17823G-H09-B-T Package Packing HSIP-9B Tube www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd 1 of 4 QW-R107-063.a http:// AN17823 „ Preliminary LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM AND PIN CONFIGURATION 1 VCC 2 Ch Output (+) Ch Output (-) N.C GND (Output) Standby „ PIN DES [ ... ]

AN17823 PDF Datasheet Download