The LM4926TL/NOPB: This is a current-production part, not a last-time-buy or obsolete line.
Output power and supply mapping
Rated 80 mW x 1 @ 16 Ω — this is the maximum continuous output power into a single 16-ohm headphone channel. For stereo operation, each channel delivers that figure independently. The 1.6 V to 4.2 V supply range mirrors a single-cell Li-ion battery from full charge down to the cutoff voltage, so the amplifier keeps running as the battery drains without a boost converter. Class AB topology means the output stage biases into a small quiescent current to eliminate crossover distortion, trading a few milliamps of idle current for lower total harmonic distortion than a Class D part at the same power level. The 80 mW ceiling suits portable headphone drivers, not speakers.
Integration features and temperature grade
Built-in depop circuitry suppresses the pop and click on power-up and shutdown — no external muting FET needed. Differential inputs reject common-mode noise picked up on the audio traces from the codec or DAC output. Shutdown and standby modes let the firmware cut supply current when the headphones are unplugged. Thermal protection folds back output current if the die exceeds the safe junction temperature. The 14-DSBGA package (0.5 mm pitch typical) requires a solder stencil with a 0.25 mm aperture and a reflow profile matching JEDEC J-STD-020 for the lead-free solder ball alloy.
Compliance and documentation
ROHS3 compliant per TI's material declaration — no exemptions for lead or other restricted substances. The series is the Boomer® family, TI's line of low-voltage audio amplifiers for portable and battery-powered applications.