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Design

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TPA2012D2

SLOS438F – DECEMBER 2004 – REVISED MARCH 2017

TPA2012D2 2.1-W/Channel Stereo Filter-Free Class-D Audio Power Amplifier

1

1 Features

1

•

Output Power By Package:

–

WQFN:

–

2.1 W/Ch Into 4 Ω at 5 V

–

1.4 W/Ch Into 8 Ω at 5 V

–

720 mW/Ch Into 8 Ω at 3.6 V

–

DSBGA:

–

1.2 W/Ch Into 4 Ω at 5 V

(Thermally Limited)

–

1.3 W/Ch Into 8 Ω at 5 V

–

720 mW/Ch Into 8 Ω at 3.6 V

•

Only Two External Components Required

•

Power Supply Range: 2.5 V to 5.5 V

•

Independent Shutdown Control for Each Channel

•

Selectable Gain of 6, 12, 18, and 24 dB

•

Internal Pulldown Resistor on Shutdown Pins

•

High PSRR: 77 dB at 217 Hz

•

Fast Start-Up Time (3.5 ms)

•

Low Supply Current

•

Low Shutdown Current

•

Short-Circuit and Thermal Protection

•

Space-Saving Packages

–

2.01-mm × 2.01-mm NanoFree™ DSBGA

(YZH)

–

4-mm × 4-mm Thin WQFN (RTJ) With

PowerPAD™

2 Applications

•

Wireless or Cellular Handsets and PDAs

•

Portable DVD Players

•

Notebook PCs

•

Portable Radios

•

Portable Gaming

•

Educational Toys

•

USB Speakers

3 Description

The TPA2012D2 is a stereo, filter-free, Class-D audio

amplifier (Class-D amp) available in a DSBGA or

WQFN package. The TPA2012D2 only requires two

external components for operation.

The TPA2012D2 features independent shutdown

controls for each channel. The gain can be selected

to 6, 12, 18, or 24 dB using the G0 and G1 gain

select pins. High PSRR and differential architecture

provide

increased

immunity

to

noise

and

RF

rectification. In addition to these features, a fast start-

up

time

and

small

package

size

make

the

TPA2012D2 class-D amp an ideal choice for both

cellular handsets and PDAs.

The TPA2012D2 is capable of driving 1.4 W/Ch at

5 V or 720 mW/Ch at 3.6 V into 8 Ω. The TPA2012D2

is also capable of driving 4 Ω. The TPA2012D2 is

thermally limited in DSBGA and may not achieve

2.1 W/Ch for 4 Ω. The maximum output power in the

DSBGA is determined by the ability of the circuit

board to remove heat. Figure 33 shows thermally

limited region of the DSBGA in relation to the WQFN

package. The TPA2012D2 provides thermal and

short-circuit protection.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPA2012D2

DSBGA (16)

2.01 mm × 2.01 mm

WQFN (20)

4.00 mm × 4.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Application Schematic