MAX4295EEE-T Maxim Integrated Products, MAX4295EEE-T Datasheet

MAX4295EEE-T

Manufacturer Part Number

MAX4295EEE-T

Description

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX4295EEE-T.pdf (15 pages)

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Palmtop/Notebook

Computers

PDA Audio

Sound Cards

Game Cards

The MAX4295 mono, switch-mode (Class D) audio

power amplifier operates from a single +2.7V to +5.5V

supply. The MAX4295 has >85% efficiency and is

capable of delivering 2W continuous power to a 4Ω

load, making it ideal for portable multimedia and gener-

al-purpose high-power audio applications.

The MAX4295 features a total harmonic distortion plus

noise (THD+N) of 0.4% (f

current of 2.8mA, high efficiency, and clickless power-

up and shutdown. The SHDN input disables the device

and limits supply current to <1.5µA. Other features

include a 1A current limit, thermal protection, and

undervoltage lockout.

The MAX4295 reduces the number of required external

components. Internal high-speed power-MOS transis-

tors allow operation as a bridge-tied load (BTL) amplifi-

er. The BTL configuration eliminates the need for

isolation capacitors on the output. The frequency-selec-

table pulse-width modulator (PWM) allows the user to

optimize the size and cost of the output filter.

The MAX4295 is offered in a space-saving 16-pin

QSOP or narrow SO package.

19-1746; Rev 3; 3/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

AUDIO

INPUT

________________________________________________________________ Maxim Integrated Products

2.7V TO 5.5V

General Description

OSC

Boom Boxes

AC Amplifiers

Battery-Powered Speakers

Cordless Phones

Portable Equipment

= 125kHz), low quiescent

OFF

Mono, 2W, Switch-Mode (Class D)

Applications

AOUT

GND

FS2

GND

VCM

SHDN

FS1

MAX4295

♦ +2.7V to +5.5V Single-Supply Operation

♦ 2W/Channel Output Power at 5V

♦ 87% Efficiency (R

♦ 0.4% THD+N (R

♦ Logic-Programmable PWM Frequency Selection

♦ Low-Power Shutdown Mode

♦ Clickless Transitions Into and Out of Shutdown

♦ 1A Current Limit and Thermal Protection

♦ Available in Space-Saving Packages

Pin Configuration appears at end of data sheet.

Audio Power Amplifier

0.7W/Channel Output Power at 3V

(125kHz, 250kHz, 500kHz, 1MHz)

MAX4295EEE

MAX4295ESE

16-Pin QSOP or Narrow SO

PGND

OUT+

OUT-

PART

Typical Operating Circuit

= 4Ω, f

Ordering Information

-40°C to +85°C

TEMP RANGE

= 4Ω, P

OSC

OUT

2.7V TO 5.5V

= 125kHz)

= 2W)

PIN-PACKAGE

16 QSOP

16 Narrow SO

Features

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