MAX9730 Maxim Integrated Products, MAX9730 Datasheet

MAX9730

Manufacturer Part Number

MAX9730

Description

Class G Power Amplifier

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX9730.pdf (15 pages)

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The MAX9730 features a mono Class G power amplifier

with an integrated inverting charge-pump power supply.

The charge pump can supply up to 500mA of peak out-

put current over a 2.7VDC to 5.5VDC supply voltage

range, guaranteeing up to 2.4W output power into an

8Ω load. The 2.4W output power allows for transient

audio content to remain unclipped as the battery rail col-

lapses over time.

The MAX9730 maximizes battery life by offering high-

performance efficiency. Maxim’s proprietary output

stage provides efficiency levels greater than Class AB

devices without the EMI penalties commonly associat-

ed with Class D amplifiers. High efficiency allows the

MAX9730 to be packaged in a UCSP™ package with-

out derating the output power handling capability.

The device utilizes fully differential inputs and outputs,

comprehensive click-and-pop suppression, shutdown

control, and soft-start circuitry. The MAX9730 is fully

specified over the -40°C to +85°C extended tempera-

ture range and is available in ultra-small, lead-free,

20-bump UCSP (2mm x 2.5mm) and 28-pin TQFN

(4mm x 4mm) packages.

19-0701; Rev 1; 11/07

MP3 Players

Personal Media Players

Handheld Gaming

Consoles

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

2.4W, Single-Supply, Class G Power Amplifier

________________________________________________________________ Maxim Integrated Products

General Description

Cell Phones

Smartphones

Notebook Computers

IN+

IN-

Applications

FB+

FB-

FB+

IN+

IN-

FB-

GND

o 2.7V to 5.5V Operation

o Integrated Charge-Pump Power Supply

o 63% Efficiency (V

o 2.4W Output Power into 8Ω at V

o Up to 2.4W Instantaneous Output Power into 8Ω

o Clickless/Popless Operation

o Small Thermally Efficient Packages

+ Denotes lead-free package.

T = Tape and reel.

* Future product—contact factory for availability.

** EP = Exposed pad.

Typical Application Circuit/Functional Diagram and Pin

Configurations appear at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

MAX9730

MAX9730EBP+T*

MAX9730ETI

2.7V TO 5.5V

2mm x 2.5mm 20-Bump UCSP

4mm x 4mm 28-Pin TQFN

PART

CLASS G

CPGND

CPV

OUTPUT

CHARGE

STAGE

PUMP

Simplified Block Diagram

OUT+

OUT-

-40°C to +85°C 20 UCSP-20

-40°C to +85°C 28 TQFN-EP**

TEMP RANGE

Ordering Information

= 5V, P

OUT

PIN-

PACKAGE

= 1W)

= 3.3V

Features

T2844-1

CODE

B20-7

PKG

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