TM
MP7782
50W Class D
Mono Bridged Audio Amplifier
The Future of Analog IC Technology
TM
DESCRIPTION
The MP7782 is a mono, 50W Class D Audio
Amplifier. It is one of MPS’ second generation
fully integrated audio amplifiers which
dramatically reduces solution size by integrating
four 180mΩ power MOSFETs in a space saving
TSSOP20 package. The MP7782 utilizes a full
bridge output structure capable of delivering
50W into 6Ω speakers. As in all other MPS
Class D audio amplifiers, this device exhibits
the high fidelity of a Class AB amplifier with an
efficiency of 90%. The circuit is based on
ADAM
TM
(Analog Digital Adaptive Modulation),
MPS’ proprietary variable frequency modulation
topology (patents pending) that delivers
excellent PSRR, fast response time and
operates on a single power supply.
FEATURES
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50W into 6Ω with V
DD
= 24V @10% THD+N
90% Efficiency at 50W
Amplifies Full Audio Range with Low THD+N
THD+N = 0.06% @ 1W
9.5V to 24V Supply Voltage Operation
Full Bridge Output Drive
4 Integrated 180mΩ Switches
Turn-On / Turn-Off Click and Pop Suppression
Integrated Short Circuit Protection
Integrated Thermal Shutdown
Mute / Standby Mode
Thermally Enhanced 20-Pin TSSOP
Package with Exposed Pad
MP3 Systems
Surround Sound Systems
Multimedia Computers
Televisions
Home Stereos
DVD and VCD Players
Game Devices and Systems
Subwoofers
APPLICATIONS
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EVALUATION BOARD REFERENCE
Board Number
EV7782DF-00A
Dimensions
4.0”X x 3.5”Y x 1.0”Z
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
ADAM (Analog Digital Adaptive Modulation) is a Trademark of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
MP7782
1
2
NC
FB2
FB1
AGND
NC
EN
FB2
FB1
AGND
EN
PGND1
SW1
VDD1
BS1
NC
PGND2
SW2
VDD2
BS2
NC
20
19
18
17
16
15
14
13
12
11
V
DD
+
100
AUDIO IN
3
4
10
+
GND
5
6
7
8
9
THD+N (%)
-
1
0.1
EN
OFF ON
10
0.01
0.1
MP7782-TAC01
1
10
OUTPUT POWER (W)
100
MP7782-EC01
MP7782 Rev. 1.2
8/3/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
