MPQ7731DF-AEC1-LF-Z Datasheet, PDF (1/10 Pages) MPS Industries, Inc. – 5W - 30W Class D Mono Bridged Audio Amplifier

The Future of Analog IC Technology
DESCRIPTION
The MPQ7731 is a mono, 5W - 30W Class D
Audio Amplifier. It is one of MPS’ second
generation of fully integrated audio amplifiers which
dramatically reduces solution size by integrating
the following:
 Start Up / Shut Down Pop Elimination
 Short Circuit Protection Circuits
 180mΩ Power MOSFETs
 Mute / Standby Mode
The MPQ7731 utilizes a full bridge output
structure capable of delivering 5W - 30W into
4 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 the MPS’
proprietary variable frequency topology Analog
Adaptive Modulation (AAM, Patent No.
6,420,930; other patents pending) that delivers
excellent PSRR, fast response time and
operates on a single power supply.
EVALUATION BOARD REFERENCE
Board Number
Dimensions
EV0045
4.8cm x 3.0cm x 1.5cm
MPQ7731
5W - 30W Class D Mono
Bridged Audio Amplifier
FEATURES
 30W into 4Ω with V_DD = 16.5V
 90% Efficiency at 5W
 Amplifies Full Audio Range with Low THD+N
 Typical = 0.1%
 9.5V to 18V 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
 Available in 20-Pin TSSOP Package
APPLICATIONS
 Flat Panel LCD and PDP Displays
 Notebook and Multimedia Computers
 Televisions
 Home Stereos
 DVD and VCD Players
 Game Devices and Systems
 Monitors
All MPS parts are lead-free, halogen free, and adhere to the RoHS
directive. 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.
TYPICAL APPLICATION
AUDIO IN+
AUDIO IN-
MPQ7731
1 _NC
PGND1 ²⁰
2 _PIN1
SW1 ¹⁹
3 _NIN1
VDD1 ¹⁸
4 _AGND1
BS1 ¹⁷
5 _NC
NC ¹⁶
6 _EN1
PGND2 ¹⁵
7 _NIN2
SW2 ¹⁴
8 _PIN2
VDD2 ¹³
9 _AGND2
BS2 ¹²
EN
10 _EN2
NC ¹¹
VCC
+
VCC
VCC
VCC
VCC
THD+N vs Output Power
50
20 f=1kHz
10
5
2
-
1
+
0.5
0.2
0.1
0.05
0.02
0.01
100M
1
10 50
OUTPUT POWER (W)
MPQ7731 Rev. 2.4
www.MonolithicPower.com
1
7/7/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.