1FEATURES
2• Filter-Free Class-D Architecture
• 3 W Into 4 Ω at 5 V (10% THD+N)
• 880 mW Into 8 Ω at 3.6 V (10% THD+N)
• Power Supply Range: 2.5 V to 5.5 V
• 3 Selectable AGC functions
• Low Supply Current: 1.8 mA
• Low Shutdown Current: 0.2 μA
• High PSRR: 80 dB
• Fast Start-up Time: 5 ms
• AGC Enable/Disable Function
• Limiter Enable/Disable Function
• Short-Circuit and Thermal Protection
• Space-Saving Package
– 1.63 mm × 1.63 mm WCSP (YZF)

APPLICATIONS
• Wireless or Cellular Handsets and PDAs
• Portable Navigation Devices
• Portable DVD Player
• Notebook PCs
• Portable Radio
• Portable Games
• Educational Toys
• USB Speakers.

DESCRIPTION
The TPA2029D1 is a mono, filter-free Class-D audio
power amplifier with dynamic range compression
(DRC) and automatic gain control (AGC). It is
available in a 1.63 mm x 1.63 mm WCSP package.
The DRC/AGC function in the TPA2029D1 can be
enabled and disabled. The DRC/AGC function is
configured to automatically prevent distortion of the
audio signal and enhance quiet passages that are
normally not heard. The DRC/AGC is also configured
to protect the speaker from damage at high power
levels and compress the dynamic range of music to fit
within the dynamic range of the speaker. The TPA2029D1 is capable of driving 3 W at 5 V into 4Ω
load or 880 mW at 3.6 V into 8Ω load. The device
features an enable pin and also provides thermal and
short circuit protection.
In addition to these features, a fast start-up time and
small package size make the TPA2029D1 an ideal
choice for Notebook PCs, PDAs and other portable
applications.
TPA2029D1 is available with different default
AGC/DRC settings for various system requirements.
See Table 2 for more detail.