View la4485 datasheet:

Ordering number: EN3680C Monolithic Linear IC LA4485 5 W, Two-channel Power Amplifier with Very Few External Parts Overview Package Dimensions unit : mm The LA4485 is a 5 W, two-channel power amplifier IC that requires a minimum of external parts, making it ideal for radio 3107-SIP13H cassette players and car stereo equipment. [LA4485] The LA4485 eliminates the need for bootstrap capacitors, negative feedback capacitors, and oscillation prevention CR parts, all of which were necessities for power ICs previously. All of these functions are now on chip, keeping the number of external parts to an absolute minimum. The LA4485 is part of the Power (Stylish Power) Series, and supports two modes: dual and BTL. Features . 5W?2 output power in dual mode, and 15 W in BTL mode .