This part is a kind of semiconductor called AN80T07.

Function of this product has Regulator / Block Diagram.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

KD-SC900R 4.2 AN80T07 (IC901) : Regulator • Block diagram MODE1 6 *ASO, Peak Current Protection. *Thermal Protection (Except VDD, Comp output). ACC 3 NC 5 Outputs Reference Voltage Pre Drive Pre Drive EXT Out Pre Drive Pre Drive ANT Out 15 ILM 10V • Pin function Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 14 11 1 4 VDD 5.7V 8 EXT 9 Vcc 10 ANT 7 12 2 13 16 GND ILM MODE2 SW5V Out AJ CD BATT.DET COMP AUDIO 9.0V 8.0V Symbol SW5V Output COMP Output ACC Input VDD Output NC MODE1 CD Output EXT Output VCC ANT Output MODE2 BATT.DET Audio Output ILM AJ ILM(Illumination) Output GND Function When Mode 1 pin is "M", "H" SW output is VDD -0.7V (Io=100mA min). When ACC input pin is "H" COMP Output is VDD -0.7V (Io=100mA min). L: COMP Output OFF and H: COMP Output ON 5.7 [ ... ]

AN80T07 PDF Datasheet Download