MP7758GF中文資料美國芯源數(shù)據(jù)手冊PDF規(guī)格書

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 240mΩ power MOSFETs and shortcircuit

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 8Ω

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