The S6419/P is a low power audio amplifier integrated circuit, intended for the communication applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages.
Datasheets by Manufacturer
STR-S6411 — Allegro MicroSystems — OFF-LINE SWITCHING REGULATORS WITH POWER MOSFET OUTPUT
S6410N — Solid State — 35A Silicon Controlled Rectifier