This part is a kind of semiconductor called SP2822.

Function of this product has Dual-channel low-voltage power amplifier.

Manufacturers : Si-Power

Image and pinout :

Some of the text within the PDF file :

SP2822 Ë«ÉùµÀ Í çѹ ¦ÂÊ·Å´ó ¸ÅÊö SP2822 ÊÇË« Ƶ·Å´ó÷¡£ ÉùµÀÍçѹ¦ÂÊ·Å´ó£¬ÓÃÚÔÌå»ýСı㯽ºÒôú (WALKMAN)ºÍÊÕ Òô»úÖÐ×÷ Ìصã (1.8V~12V) 1.8V ÈÔÄܹ¤×÷ (BTL)»òÁ¢ÌåÉùÏß·½Ö¹¤×÷´¬ ×î´ó¶ ¨Öµ ²Î µçԴѹ Êä³ö·åÖµçÁ÷ È«¹¦ºÄ ½áΠÖü´æÎÂ¶È Tamb=50¡æ Tcase=50¡æ Êý Ãû ³Æ ·û ºÅ Vcc IO(P) PD T Tstg Êý 6 1 1 Öµ µ¥ λ V A W ¡æ ¡æ 1.4 150 -40~+150 Òý³ö¶Ë¹¦ÄÜ Òý³ö¶ËÐòºÅ 1 2 3 4 5 6 7 8 ·û ºÅ OUT1 Êä³ö¶Ë µçÔ´ Êä³ö¶Ë µØ ·´ÏòÊäÈë¶Ë ÕýÏòÊäÈë¶Ë ÕýÏòÊäÈë¶Ë ·´ÏòÊäÈë¶Ë 2 2 1 1 2 VCC OUT2 GND IN2(-) ¹¦ ÄÜ 1 w w w ÎÞý¹è¿Æ¶¯Á¦¼ [ ... ]

SP2822 PDF Datasheet Download