MP7720

20W Class D Mono

Single Ended Audio Amplifer

MP7720 Rev. 1.9

www.MonolithicPower.com

1

3/13/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP7720 is a mono 20W Class D Audio

Amplifier. It is one of MPS’ second generation

of fully integrated audio amplifiers which

dramatically reduces solution size by integrating

the following:

180mΩ power MOSFETs

Startup / Shutdown pop elimination

Short circuit protection circuits

Mute / Standby

The MP7720 utilizes a single ended output

structure capable of delivering 20W into 4Ω

speakers. MPS Class D Audio Amplifiers exhibit

the high fidelity of a Class A/B amplifier at

efficiencies greater than 90%. The circuit is

based on the MPS’ proprietary variable

frequency topology that delivers excellent

PSRR, fast response time and operates on a

single power supply.

EVALUATION BOARD REFERENCE

Board Number

Dimensions

EV0030

2.4”X x 3.5”Y x 1.2”Z

FEATURES

• THD+N = 0.04% at 1W, 8Ω

• 93% Efficiency at 20W

• Low Noise (190µV Typical)

• Switching Frequency Up to 1MHz

• 9.5V to 24V Operation from a Single Supply

• Integrated Startup and Shutdown Pop

Elimination Circuit

• Thermal Protection

• Integrated 180mΩ Switches

• Mute/Standby Modes (Sleep)

• Available in Tiny 8-Pin SOIC and PDIP Packages

APPLICATIONS

• Surround Sound DVD Systems

• Televisions

• Flat Panel Monitors

• Multimedia Computers

• Home Stereo Systems

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

AAM (Analog Adaptive Modulation) is a Trademark of Monolithic Power

Systems, Inc.

TYPICAL APPLICATION

+

AUDIO

INPUT

OFF ON

MP7720

SW

BS

PGND

VDD

PIN

EN

NIN

AGND

8

6

5

7

1

4

2

3

MP7720_TAC_S01

20

10

1

0.1

0.01

0.1

1

10

30

POWER (W)

MP7720-TPC01

THD+N vs

Power (24V, 1KHz)