PAM8905
Description
Pin Assignments
The PAM8905 is a high efficiency Class-D audio power amplifier with an integrated boost converter. It drives up to 1.9W (1% THD+N) into an 8Ω speaker. With 85% typical efficiency, the PAM8905 helps extend battery life when playing audio.
12 3 A PVDD SW BGND
The built-in boost converter generates the voltage rail for the output stage. This provides a louder audio output than a stand-alone amplifier connected directly to the battery. It also maintains a consistent loudness, regardless of battery voltage.
The PAM8905 features battery tracking AGC function which adjusts the Class-D gain to limit battery current at lower battery voltage.
B OUT+
VBAT
C OUT-
IN+
D PGND AGND
IN-
(TOP VIEW)
PAM8905 features
DC input protection and all outputs are fully protected against output-to-output shorts. The PAM8905 is available in U-WLB1520-12 package.
Features
- Built-In Battery Tracking Automatic Gain Control (AGC)
- High Efficiency Integrated Boost...
