|
EV0045 Datasheet, PDF (1/6 Pages) Monolithic Power Systems – Compact 25W Class D Stereo Bridged Audio Amplifier | |||
|
EV0045 (MP7731)
Compact 25W Class D
Stereo Bridged Audio Amplifier
Monolithic Power Systems
EVALUATION BOARD â PRELIMINARY INFORMATION
GENERAL DESCRIPTION
The EV0045 is a stereo evaluation board
featuring MPSâ MP7731 Class D Full Bridge
Audio Amplifier. The EV0045 can deliver 25W
into a 4⦠load with a 14.5V input supply.
The MP7731 is a mono 30W Class D Audio
Amplifier. It is one of MPSâ second generation
of fully integrated audio amplifiers which
dramatically reduces solution size by integrating
the following:
⢠180m⦠power MOSFETs
⢠Start up / shut down pop elimination
⢠Short circuit protection circuits
⢠Mute / Standby Mode
The MP7731 utilizes a full bridge output
structure capable of delivering 30W into 4â¦
speakers. As in all other MPS Class D Audio
Amplifiers, this device exhibits the high fidelity
of a Class A/B amplifier at efficiencies greater
than 90%.
FEATURES
⢠25W into 4⦠with 14.5V Input
⢠90% Efficiency at 5W
⢠9.5V to 14.5V Supply Voltage Operation
⢠Full Bridge Output Drive
⢠Integrated 180m⦠Switches
⢠Turn On / Turn Off Click and Pop
Suppression
⢠Integrated Short Circuit Protection
⢠Integrated Thermal shutdown
⢠Mute / Standby Mode
APPLICATIONS
⢠Notebook and Multimedia Computers
⢠Television and Home Theatre Systems
⢠DVD and VCR Players
, âMPSâ, âMonolithic Power Systemsâ, and âThe Future of Analog IC
Technologyâ are Registered Trademarks of Monolithic Power Systems, Inc.
EVALUATION BOARD
Dimensions (1.9âX x 1.2âY)
Board Number
MPS IC Number
EV0045
MP7731DF
ABSOLUTE MAXIMUM RATINGS
Supply Voltage VIN....................................... 26V
BS Voltage.......................VSW-0.3V to VSW+6.5V
Enable Voltage VEN........................... -0.3V to 6V
VSW, VPIN, VNIN .............................. -1V to VDD+1V
AGND to PGND ............................. -0.3V to 0.3V
Recommended Operating Conditions
Input Voltage VDD.......................... 9.5V to 14.5V
Signal Input Voltage ..............................±1V rms
Signal Input Frequency............... 20Hz to 20kHz
Signal Source Impedance ..........less than 600â¦
External Enable Input ........................... 0V to 5V
Speaker Resistance ............................ 4⦠to 8â¦
06/04, Rev. 1.3
www.MonolithicPower.com
1
|
▷ |