MP7740
15W Class D Mono
Single Ended Audio Amplifer
The Future of Analog IC Technology
DESCRIPTION
The MP7740 is a mono 15W Class D Audio
Amplifier. It is one of MPS’ products of fully
integrated audio amplifiers which dramatically
reduces solution size by integrating the
following:
250mΩ power MOSFETs
Startup / Shutdown pop elimination
Short circuit protection circuits
The MP7740 utilizes a single ended output
structure capable of delivering 15W 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.
FEATURES
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15W Output at V
DD
= 24V into a 4Ω load
THD+N = 0.05% at 1W, 8Ω
90% Efficiency at 15W & V
DD
=24V
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
Thermal and Short Circuit Protection
Integrated Power FETs
Pin Compatible with MP7720
Available in Tiny 8-Pin SOIC Package
Portable Docking Stations
Surround Sound DVD Systems
Televisions
Flat Panel Monitors
Multimedia Computers
Home Stereo Systems
APPLICATIONS
“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
V
DD
OFF ON
4
EN
VDD
6
THD+N vs. P
OUT
V
DD
=24V
,
Freq=1kHz,A-wtd
20
10
5
1
PIN
PGND
8
2
MP7740
NIN
BS
5
3
AGND
SW
7
THD+N (%)
+
2
1
0.5
0.2
0.1
0.05
0.02
0.01
60m
AUDIO
INPUT
200m
1
5
20
P
OUT
(W)
MP7740 Rev. 0.9
9/22/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
