YZG

IN+

IN-

EN

AGND

PGND

VBAT

SW

PVDD

OUT+

OUT-

TPA 2025D1

Audio

Input

Connected to Supply

Enable

+

-

AGC

AGC

BGND

2.2 F

m

2.2 H

m

6.8 F - 22 F

m

m

TPA2025D1

www.ti.com

SLOS717A

– AUGUST 2011 – REVISED FEBRUARY 2012

2 W Constant Output Power Class-D Audio Amplifier with Class-G Boost Converter and

Battery Tracking AGC

Check for Samples: TPA2025D1

1

FEATURES

DESCRIPTION

The TPA2025D1 is a high efficiency Class-D audio

•

Built-In Enhanced Battery Tracking Automatic

power amplifier with battery tracking AGC technology

Gain Control (AGC)

and an integrated Class-G boost converter that

– Limits Battery Current Consumption

enhances efficiency at low output power. It drives up

•

1.9 W into 8

Ω Load from 3.6 V Supply (1%

to 1.9 W into an 8

Ω speaker (1% THD+N). With 85%

typical efficiency, the TPA2025D1 helps extend

THD+N)

battery life when playing audio.

•

Integrated Adaptive Boost Converter

The built-in boost converter generates a 5.75

V

– Increases Efficiency at Low Output Power

supply

voltage

for

the

Class-D

amplifier.

This

•

Low Quiescent Current of 2 mA from 3.6 V

provides a louder audio output than a stand-alone

•

Thermal and Short-Circuit Protection with

amplifier directly connected to the battery. The battery

Auto Recovery

tracking AGC adjusts the Class-D gain to limit battery

current at lower battery voltage.

•

20 dB Fixed Gain

•

Similar Performance to TPA2015D1

The TPA2025D1 has an integrated low-pass filter to

improve

the

RF

rejection

and

reduce

DAC

•

Available in 1.53 mm

× 1.982 mm,

out-of-band noise, increasing the signal-to-noise ratio

0.5 mm pitch 12-ball WCSP Package

(SNR).

APPLICATIONS

The TPA2025D1 is available in a space saving

1.53

mm

× 1.982

mm, 0.5

mm pitch WCSP

•

Cell Phones

package (YZG).

•

PDA, GPS

•

Portable Electronics and Speakers

SIMPLIFIED APPLICATION DIAGRAM

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2011–2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.