Class AB headphone driver with 500 mW into 32 Ω
The Texas Instruments LME49600TS/NOPB is a Class AB mono audio amplifier delivering 500 mW continuous into a 32 Ω load. Built-in short-circuit and thermal protection means the amplifier survives output shorts to ground or the opposite rail during assembly or field faults — a practical advantage for production boards where a solder bridge on the headphone jack is a common rework driver. The operating temperature range of -40°C to 85°C covers indoor studio gear, outdoor broadcast equipment, and automotive cabin audio (non-safety) where the ambient stays below the 85°C mark.
Package and mounting — DDPAK/TO-263-5
The LME49600TS/NOPB comes in a TO-263-6 (D²Pak) surface-mount package with five leads plus the tab. The supplier device package is DDPAK/TO-263-5. The exposed tab on the bottom is the main thermal path — it must be soldered to a copper plane on the PCB to keep the junction temperature under control at full output. The tab is also the negative supply connection, so the PCB layout needs a split-plane or isolated copper pour if the system uses a single ground plane.