MP7722

2 x 20W Class D Stereo

Single Ended Audio Amplifer

MP7722 Rev. 1.3

www.MonolithicPower.com

1

9/25/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP7722 is a stereo 2 x 20W Class D Audio

Amplifier. It is one of MPS’ second generation

fully

integrated

audio

amplifiers

which

dramatically reduces solution size by integrating

the following:

180mΩ power MOSFETs

Startup / Shutdown pop elimination

Short circuit protection

Mute / Standby

The MP7722 utilizes a single ended output

structure capable of delivering 2 x 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 low distortion,

fast response time and operates on a single

power supply.

FEATURES

• THD+N = 0.06% 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 and Short Circuit Protection

• Integrated 180mΩ Switches

• Mute/Standby Modes (Sleep)

• Thermally

Enhanced

20-Pin

TSSOP

Package with Exposed Pad

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

MP7722

BS1

SW1

BS2

SW2

REF1

2

3

8

CH1

INPUT

7

6

10

4

9

CH1

OUTPUT

CH2

OUTPUT

14

18

20

13

15

12

19

17

IN1

REF2

IN2

EN2

EN1

AGND2

AGND1

PGND2

VDD2

CH2

INPUT

EN

PGND1

VDD1

10

1

0.1

0.01

0.1

1

10

OUTPUT POWER (W)

THD+N vs Output Power

24V, f = 1KHz