D1

D2

C1

C2

B1

B2

OUT-

PGND

AGND

AGC

OUT+

BGND

EN

A1

A2

SW

D3

C3

B3

VBAT

A3

PVDD

IN-

IN+

YZG PACKAGE

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TPA2025D1

www.ti.com

SLOS717B – AUGUST 2011 – REVISED DECEMBER 2014

6 Device Comparison Table

DEVICE NAME

DESCRIPTION

TPA2025D1

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

7 Pin Configuration and Functions

12-PIN

Pin Functions

PIN

INPUT/ OUTPUT/

DESCRIPTION

POWER (I/O/P)

NAME

WCSP

PVDD

A1

O

Boost converter output and Class-D power stage supply voltage.

SW

A2

I

Boost converter switch input; connect boost inductor between VBAT and SW.

BGND

A3

P

Boost converter power ground.

OUT+

B1

O

Positive audio output.

AGC

B2

I

AGC inflection point select. Connect to VDD, GND or Float. Voltage at AGC pin is

only read at device power-up. A power cycle is required to change inflection points.

VBAT

B3

P

Supply voltage.

OUT–

C1

O

Negative audio output.

EN

C2

I

Device enable; set to logic high to enable.

IN+

C3

I

Positive audio input.

PGND

D1

P

Class-D power ground.

AGND

D2

P

Analog ground.

IN–

D3

I

Negative audio input.

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