深圳市赛尔通科技有限公司0755-82732291器件资料摘要：MP7782
50W Class D
Mono Bridged Audio Amplifier
MP7782 Rev. 1.2 www.MonolithicPower.com 1
8/3/2005 MPS Proprietary Information. Unauthorized Photocopy and lication Prohibited.
? 2005 MPS. All Rights Reserved.
The Future of Analog IC Technology
TM
TM深圳市赛尔通科技有限公司0755-82732291
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 180m power MOSFETs in a space saving
TSSOP20 package. The MP7782 utilizes a full
bridge output structure capable of delivering
50W into 6 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
深圳市赛尔通科技有限公司0755-82732291
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.
EVALUATION BOARD REFERENCE
Board Number Dimensions
EV7782DF-00A 4.0”X x 3.5”Y x 1.0”Z
FEATURES
50W into 6 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 180m 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
APPLICATIONS
MP3 Systems
Surround Sound Systems
Multimedia Computers
Televisions
Home Stereos
DVD and VCD Players
Game Devices and Systems
Subwoofers
“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
NC
FB2
FB1
AGND
NC
EN
FB2
FB1
AGND
EN
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
PGND1
SW1
VDD1
BS1
NC
PGND2
SW2
VDD2
BS2
NC
AUDIO IN
GND
+
V
DD
EN
-
+
OFF ON
MP7782-TAC01
100
10
1
0.1
0.01
THD+N (%)
0.1 1 10 100
OUTPUT POWER
