MP7747

20W Class D Mono

Single Ended Audio Amplifier

MP7747 Rev. 1.0

www.MonolithicPower.com

1

1/28/2011

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2011 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP7747 is a mono 20W Class D Audio

Amplifier. It is one of MPS’ products of fully

integrated audio amplifiers which dramatically

reduce solution size by integrating the following:

250mΩ power MOSFETs

Startup / Shutdown pop elimination

Short circuit protection circuits

The MP7747 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 high

efficiencies. The circuit is based on the MPS’

proprietary variable frequency topology that

delivers excellent linearity, fast response time

and operates on a single power supply.

MP7747

features

programmable

VDD

shutdown voltage by controlling the UVP node

voltage. The default VDD UVP voltage (rising

threshold) is 8.4V if the UVP pin is NC.

FEATURES

• THD+N = 0.02% at 1W, 8Ω

• Low Noise (103µV Typical)

• Switching Frequency Up to 1MHz

• 9.5V to 36V Operation from a Single Supply

• Integrated Startup and Shutdown Pop

Elimination Circuit

• Programmable UVP

• Thermal and Short Circuit Protection

• Integrated Power FETs

• Available in 10-Pin QFN3x3 Package

APPLICATIONS

• Portable Docking Stations

• Surround Sound DVD Systems

• Televisions

• Flat Panel Monitors

• Multimedia Computers

• Home Stereo Systems

For MPS green status, please visit MPS website under Quality Assurance.

“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

0.01

20

0.02

0.05

0.1

0.2

0.5

10

5

2

1

60m

35

100m

1

10