1 Features

1• High Efficiency Integrated Boost Converter (Over

90% Efficiency)

• 2.2-W into an 8-Ω Load from a 3.6-V Supply

• 2.7-W into an 4-Ω Load from a 3.6-V Supply

• Operates from 1.8 V to 5.5 V

• Efficient Class-D Prolongs Battery Life

• Independent Shutdown for Boost Converter and

Class-D Amplifier

• Differential Inputs Reduce RF Common Noise

• Built-In INPUT Low-Pass Filter Decreases RF and

Out-of-Band Noise Sensitivity

• Synchronized Boost and Class-D Eliminates Beat

Frequencies

• Thermal and Short-Circuit Protection

• Available in 2.275-mm × 2.275-mm 16-ball WCSP

and 4-mm × 4-mm 20-Lead QFN Packages

• 3 Selectable Gain Settings of 2 V/V, 6 V/V, and

10 V/V

2 Applications

• Cell Phones

• PDA

• GPS

• Portable Electronics

3 Description

The TPA2013D1 device is a high efficiency Class-D

audio power amplifier with an integrated boost

converter. It drives up to 2.7 W (10% THD+N) into a

4-Ω speaker. With 85% typical efficiency, the

TPA2013D1 helps extend battery life when playing

audio.

The built-in boost converter generates the voltage rail

for the Class-D amplifier. 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. Additionally,

the boost converter can be used to supply external

devices.

The TPA2013D1 has an integrated low pass filter to

improve RF rejection and reduce out-of-band noise,

increasing the signal-to-noise ratio (SNR). A built-in

PLL synchronizes the boost converter and Class-D

switching frequencies, thus eliminating beat

frequencies and improving audio quality. All outputs

are fully protected against shorts to ground, power

supply, and output-to-output shorts.