MP7748S

2 x 30W Stereo Single Ended

Or 60W Mono BTL Class D Audio Amplifier

MP7748S Rev. 1.0

www.MonolithicPower.com

1

10/14/2013

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

© 2013 MPS. All Rights Reserved.

DESCRIPTION

The MP7748S is a Class D Audio Amplifier for

driving

stereo

speakers

in

single-ended

configuration or a mono speaker in bridge-tied-

load configuration. It is fully integrated audio

amplifier which dramatically reduces solution

size by integrating the following:



20

0mΩ power MOSFETs



Startup / Shutdown pop elimination



Short circuit protection circuits

The MP7748S is capable of delivering 30W per

channel

into 4Ω speaker in single-ended output

structure, or delivering 60W into 8

Ω speaker in

bridge-tied-load output structure. 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.

MP7748S

features

programmable

VDD

shutdown

voltage

for

each

channel

by

controlling the UVP node voltage. The default

VDD shutdown (rising threshold) voltage is 8.4V

if the UVP pin is NC.

The

MP7748S

is

available

in

TSSOP28-

Exposed Package.

FEATURES

 9.5V to 36V Operation from a Single Supply

 ±5.5A Peak Current Output

 Output Power at 30V and 10%THD:

- Stereo Single Ended: 2 x 30W into 4

Ω Load,

- Bridge Tied Load: 60W into 8

Ω Load

 THD+N = 0.02% at 1W, 8Ω

 > 90% Efficiency at 10%THD

 Low Noise (160μV with SE configuration,

145

μV with BTL configuration)

 Switching Frequency Up to 1MHz

 Integrated Startup and Shutdown Pop

Elimination Circuit

 Programmable UVP

 Thermal and Short Circuit Protection

 Integrated Power FETs

 Available in TSSOP28-Exposed Package

APPLICATIONS

 Portable Docking Stations

 Surround Sound DVD Systems

 Televisions

 Flat Panel Monitors

 Multimedia Computers

 Home Stereo Systems

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.