MP7758

18V, 2 x 15W Stereo BTL, Fixed-Frequency,

Inductorless Class-D Audio Amplifier

MP7758 Rev. 1.0

www.MonolithicPower.com

1

12/3/2020

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2020 MPS. All Rights Reserved.

DESCRIPTION

The MP7758 is an inductorless, analog input

class-D audio

amplifier that

drives

stereo

speakers in a bridge-tied load configuration.

The device is a fully integrated audio amplifier,

which reduces solution size dramatically. It

integrates 24

0mΩ power MOSFETs and short-

circuit protection circuits.

The MP7758 features start-up/shutdown pop

elimination,

as

well

as

advanced

EMI

performance. The device can pass EMC tests

without an inductor.

The device utilizes a stereo BTL structure

capable of delivering 15W per channel into 8

Ω

speakers with a 16V power supply. MPS class-

D audio amplifiers exhibit the high fidelity of

class-AB amplifiers, with high efficiency.

The MP7758 includes an internal circuit that

allows the system to automatically shut down

after the absence of an audio signal is detected.

This feature is well-suited for energy-using

products and battery-operated applications.

The device offers an adjustable power limit

(PLIMIT) function. The PLIMIT circuit sets a

limit on the output peak-to-peak voltage. This is

done by limiting the duty cycle to a fixed

maximum value. This limit functions as a virtual

voltage rail, and is lower than the supply

connected to PVCC.

The MP7758 is available in a TSSOP-28 EP

package.

FEATURES

 5V to 18V Operation from a Single Supply

 ±5A Peak Current Output

 Output Power:

o

9.5W/Channel at

12V, 8Ω Load, 10%

THD

o

15W/Channel at 16V, 8Ω Load, 10%

THD

 90% Efficiency with 8Ω Load, 10% THD,

1kHz, 12V Supply Voltage

 240mΩ Power MOSFETs

 Start-Up/Shutdown Pop Elimination

 Short-Circuit Protection Circuits

 Inductorless Topology

 Advanced EMI Performance

 All Switches Current Limited

 Internal Under-Voltage Protection (UVP)

 Internal Thermal Protection

 Adjustable Power Limit

 Automatic Shutdown with Zero Input Signal

Detection

 Fault Output Flag

 Available in a TSSOP-28 EP Package

APPLICATIONS

 Wireless/Portable Speakers

 TVs

 DVD Receivers

 Active Speakers

All MPS parts are lead-free, halogen-free, and adhere to the RoHS

directive. For MPS green status, please visit the MPS website under

Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are

trademarks of Monolithic Power Systems, Inc. or its subsidiaries.