lv4924vh ON Semiconductor, lv4924vh Datasheet - Page 7

• Manufacturer Part Number: lv4924vh
• Description: Bi-cmos Ic Class-d Audio Power Amplifier Power Cell Btl 10wx2ch
• Manufacturer: ON Semiconductor

Description of functions
System Standby
MUTE Function
Muting the output
Sequence at power ON
(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.
* Please observe the following items for the destruction prevention of the output transistor.
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".
The MUTE function is mainly for muting of the output and for reduction of pop noise at power ON.
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".
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.
LV4924VH
No.A1997-7/15