Texas Instruments' TPA3138D2 is a 10 W/ch, high-efficiency, low-idle-current class D stereo audio amplifier. It can drive stereo speakers with a load as low as 3.2 Ω. In the 1SPW-mode, it consumes a low-idle-current of only 21 mA (12 V) and can operate down to 3.5 V, allowing for longer audio play and improved thermal performance in Bluetooth® speakers, battery-powered appliances, and other power-sensitive applications.

Advanced EMI suppression with spread spectrum control enables the use of inexpensive ferrite bead filters while meeting EMC requirements for system cost reduction. To further simplify the design, the TPA3138D2 integrates essential protection features including undervoltage, overvoltage, power limit, short circuit, and overtemperature, as well as DC speaker protection. All of these protections include automatic recovery.

Customers can leverage every TPA3138D2 feature in existing designs as it is fully pin-to-pin compatible to TI's TPA3110D2, TPA3136D2, and TPA3136AD2.