PWM

+

–

Internal

Oscillator

H-Bridge

Bias

Circuitry

IN+

IN-

EN

Cs

Tobattery

TPA 2037 D1

GND

VDD

A1

IN+

A2

GND

A3

B1

B2

B3

PGND

C1

IN-

C2

EN

C3

TPA2037D1

9-BALL 0.4mmPITCH

WAFERCHIP SCALEPACKAGE (YFF)

(TOP VIEWOFPCB)

1.214 mm

TPA2037D1

www.ti.com

SLOS648B – OCTOBER 2009 – REVISED JUNE 2010

3.2W Mono Class-D Audio Power Amplifier

With 6-dB Gain and Auto Short-Circuit Recovery

Check for Samples: TPA2037D1

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 TPA2037D1 is a 3.2 W high efficiency filter-free

•

+6 dB Fixed Gain

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

•

Integrated Image Reject Filter for DAC Noise

6 dB of fixed gain in a 1.21 mm x 1.16 mm wafer chip

Reduction

scale package (WCSP). The device requires only one

external component.

•

Low Output Noise of 20 mV

•

Low Quiescent Current of 1.5 mA

Features like 95% efficiency, 1.5 mA quiescent

current, 0.1 mA shutdown current, 81-dB PSRR,

•

Differential Input Impedance of 300 k

Ω

20 mV output noise, and improved RF immunity make

•

Auto-Recovering Short-Circuit Protection

the TPA2037D1 class-D amplifier ideal for cellular

•

Thermal-Overload Protection

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

makes

the

TPA2037D1

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 © 2009–2010, 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.