PWM

+

–

Internal

Oscillator

H-Bridge

Bias

Circuitry

IN+

IN-

EN

Cs

Tobattery

TPA 2039 D1

GND

VDD

A1

IN+

A2

GND

A3

B1

B2

B3

PGND

C1

IN-

C2

EN

C3

TPA2039D1

9-BALL 0.4mmPITCH

WAFERCHIP SCALEPACKAGE (YFF)

(TOP VIEWOFPCB)

1.214 mm

TPA2039D1

www.ti.com

SLOS652 – DECEMBER 2009

3.2W Mono Class-D Audio Power Amplifier

With 12-dB Gain and Auto Short-Circuit Recovery

Check for Samples: TPA2039D1

1

FEATURES

APPLICATIONS

•

Wireless or Cellular Handsets and PDAs

•

Powerful Mono Class-D Speaker Amplifier

•

Portable Navigation Devices

–

3.24 W (4

Ω, 5 V, 10% THDN)

•

General Portable Audio Devices

–

2.57 W (4

Ω, 5 V, 1% THDN)

–

1.80 W (8

Ω, 5 V, 10% THDN)

DESCRIPTION

–

1.46 W (8

Ω, 5 V, 1% THDN)

The TPA2039D1 is a 3.2 W high efficiency filter-free

•

+12 dB Fixed Gain

class-D audio power amplifier (class-D amp) with

•

Integrated Image Reject Filter for DAC Noise

12 dB of fixed gain in a tiny 1.21 mm x 1.16 mm

Reduction

wafer chip scale package (WCSP). The device

requires only one external component.

•

Low Output Noise of 27

μV

•

Low Quiescent Current of 1.5 mA

Features like 93% efficiency, 1.5 mA quiescent

current, 0.1

μA shutdown current, 82-dB PSRR,

•

Differential Input Impedance of 150 k

Ω

27

μV output noise and improved RF immunity make

•

Auto-Recovering Short-Circuit Protection

the TPA2039D1 class-D amplifier ideal for cellular

•

Thermal-Overload Protection

handsets. A fast start-up time of 4 ms with no audible

pop makes the TPA2039D1 ideal for PDA and

•

Filter-Free Mono Class-D Amp

smart-phone applications.

•

9-Ball 1,21 mm × 1,16 mm 0,4mm Pitch WCSP

APPLICATION CIRCUIT

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 © 2009, 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.