The BA6997FP and BA6997FM, both designed for CD players, have an internal 4-channel BTL driver and 5V regulator (which requires attached PNP transistor), as well as switches for the 5V regulator and temperature monitor pins.

Features
1) 4-channel BTL driver for CD players.
2) Wide dynamic range.
3) Internal thermal shutdown circuit.
4) Internal level shift circuit, for a minimum of attached components.
5) Internal 5V regular with switch.

Applications
    CD players and other optical disc devices