LV4924VH 查看數據表（PDF） - ON Semiconductor

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LV4924VH

Class-D Audio power Amplifier Power cell BTL 10W×2ch

ON Semiconductor 

LV4924VH

Description of functions

System Standby

The built-in 5V regulator is turned ON / OFF by changing over "H" and "L" of "STBY". The regulator is turned OFF

with "STBY" at "L" and ON with "STBY" at "H".

This signal also causes initialization of the internal logic initialization with "L" and the normal mode with "H".

MUTE Function

The MUTE function is mainly for muting of the output and for reduction of pop noise at power ON.

Muting the output

The output PWM can be turned ON / OFF by changing over "H" and "L" of "MUTE". The PWM output is stopped

(putting all of PWM outputs at high impedance) with "MUTE" at "L" and enters the normal operation mode with

"MUTE" at "H".

Sequence at power ON

To reduce the pop noise, turn ON power supply while controlling in the following timing (PWM=BD mode).

In particular, all of inputs of PWM must be held at "L" at canceling of MUTE function.

* Please observe the following items for the destruction prevention of the output transistor.

(1) Under all conditions must control the period at the "H" level about the PWM input so as not to become more than

200μs when period of the "H" level MUTE and STBY signals both.

No.A1997-7/15

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