What the 1.3 W per channel means in a portable design
The LM48520TL delivers 1.3 W per channel into an 8 Ω load — enough to drive a pair of small speakers or a headphone output in a battery-powered gadget without external heatsinking, thanks to the Class D architecture. Stereo output (2-channel) means a single IC handles left and right audio paths — no external mux or second amplifier needed for a basic stereo line-out or speaker pair.
Package and board-fit — 25-DSBGA
Housed in a 25-bump DSBGA (2.46 x 2.46 mm), the LM48520TL is a wafer-level chip-scale package — the footprint matches the die size, so board space is minimal, but the 0.5 mm pitch bumps require a controlled solder-paste stencil and reflow profile. Surface-mount only; no socket option exists for this package. The part is marked on the top side, but orientation is determined by the bump map — confirm the pin-1 indicator on the PCB layout before assembly.
Sourcing and lifecycle — active, no second-source on record
No pin-compatible second-source or direct replacement from other manufacturers is documented in the Boomer® series — the LM48520TL is a single-sourced TI part.