參數(shù)資料
型號(hào): LV4920H
廠商: SANYO SEMICONDUCTOR CO LTD
元件分類: 音頻/視頻放大
英文描述: 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
封裝: 0.375 INCH, HSOP-36
文件頁(yè)數(shù): 12/12頁(yè)
文件大?。?/td> 165K
代理商: LV4920H
LV4920H
No.A0989-9/12
2.3 Power Down Sequence
The power shut-down sequence must be controlled by timing as shown below (PWM=BD mode) to minimize
impulse noise.
3. Protection Circuits
The LV4920H has full complement of built-in protection circuits: overcurrent protection, thermal protection, and low
power supply voltage protection circuits.
3.1 Overcurrent protection circuit
The overcurrent protection circuit protects the output transistors by detecting current that exceeds a predetermined
value due to load shorting, shorting to power, shorting to ground, etc.
When the protection circuit is activated, both the high- and low-side output transistors are turned off and the
output is placed in a high-impedance state.
The figure below shows the waveform of current that flows when load shorting (1
) occurs.
+3.8A
-3.8A
Overcurrent hold time (approx. 20
s)
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