參數(shù)資料
型號(hào)： LA4485
廠商： Sanyo Electric Co.,Ltd.
英文描述： 5 W, Two-channel Power Amplifier with Very Few External Parts
中文描述： 5瓦，雙通道與極少的外部零件功率放大器
文件頁(yè)數(shù)： 11/20頁(yè)
文件大?。?/td> 497K
代理商： LA4485
.
Insert capacitors of 1000 pF between each input and ground to prevent external noise.
.
When the load (R
L
) or the supply voltage (V
CC
) is increased, turning the standby switch or the main switch on under strong
input conditions will activate the IC’s internal pseudo ASO protection circuit for the upper power transistor (V
CE
×
I
CP
). This
causes output oscillations or intermittent operation (The reference area is shown in Figure 1 below). However, strong input tests
after the bias has stabilized have no problems. They also protect the upper power transistors close to the limits of ASO when all
signal switches are on. Therefore, when using this IC under these conditions, the circuit design should obey the following
condition:
Signal generation time > Start-up time of the power amplifier IC
or some other method of attaining the zero-volume condition should be adopted.
.
An undervoltage protection circuit operates when the voltage is 7.5 V or lower.
Strong signal input after switch-ON is OK.
In BTL-mode operation, the load is R
L
×
2
This figure shows the pseudo ASO protection area when strong signal is input, and switch is ON:
the upper power transistors have an area where V
CE
×
I
CP
load is caused.
I
I
–
PHOTO-1
VCC= 13.2 V
RL= 2
PHOTO-2
VCC= 15 V
RL= 3
Dual-mode operation
f = 1 kHz
Dual channel drive
Non-inductive load
Ta = 25°C
Standby switch ON in a
typical application
Supply voltage, V
CC
– V
R
= 4
Design center
Figure 1
LA4485
No.3680-11/20
相關(guān)PDF資料
PDF描述
LA4495 Car Stereo-Use BTL-OCL 20W AF Power Amp
LA4497 Car Stereo-Use BTL-OCL 20W AF Power Amp
LA4500 5.3W 2-Channel AF Power Amplifier
LA4505 2-CHANNEL AF POWER AMPLIFIER FOR RADIO CASSETTE(15V)
LA4508 8.5W 2-Channel AF Power Amplifier
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LA4495 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Car Stereo-Use BTL-OCL 20W AF Power Amp
LA4496 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Car Stereo-Use BTL-OCL 20W AF Power Amp
LA4497 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Car Stereo-Use BTL-OCL 20W AF Power Amp
LA4498 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Car Stereo-Use BTL-OCL 20W AF Power Amp
LA44B-2EG-S23-PF 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*