MP7751

26V, 2x20W Stereo BTL Fix Frequency

Class D Audio Amplifier

MP7751 Rev. 1.0

www.MonolithicPower.com

1

5/23/2014

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© 2014 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

MP7751 is an analog input Class D Audio

Amplifier which can drive stereo speakers in

bridge-tied-load configuration. It is one of MPS’

products of fully integrated audio amplifiers

which dramatically reduce solution size by

integrating the following:

240mΩ power MOSFETs

Startup / Shutdown pop elimination

Short circuit protection circuits

Advanced EMI performance

The MP7751 utilizes a stereo BTL structure

capable of delivering 20W per channel into 8Ω

speakers at 18V power supply. MPS Class D

Audio Amplifiers exhibit the high fidelity of a

Class AB amplifier at high efficiencies.

The MP7751 includes an internal circuit which

allows the system automatic shutdown after the

absence of the audio signal. This feature is

used for energy-using products and for battery

operated applications.

It also has an adjustable power limit function.

The PLIMIT circuit sets a limit on the output

peak-to-peak voltage. The limiting is done by

limiting the duty cycle to fixed maximum value.

This limit can be thought of as a "virtual"

voltage rail which is lower than the supply

connected to PVCC.

The MP7751 is available in TSSOP-28 EP

package.

FEATURES

• 5V to 26V Operation from a Single Supply

• ±5A Peak Current Output

• Output Power:

9.5W/channel at 12V, 8Ω Load, 10%THD

15W/Channel at 16V, 8Ω Load, 10%THD

20W/Channel at 18V, 8Ω Load, 10%THD

• 92% Efficiency with 8Ω Load, 10%THD,

1kHz, 12V Supply Voltage

• 240mΩ power MOSFETs

• Startup / Shutdown pop elimination

• Short circuit protection circuits

• Advanced EMI performance

• All Switches Current limited

• Internal Under Voltage Protection

• Internal Thermal Protection

• TSSOP-28 EP package

• Adjustable power limiter

• Automatic shutdown with zero input signal

detect

• Fault Output Flag

APPLICATIONS

• TV

• DVD Receiver

• Active Speaker

• Home Theaters

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.