锂电池充电器一个奇怪的8脚IC

sunboy99988

今天手痒拆了一个7.2V对讲机充电器,电路板面有常见的三端精密稳压IC TL431,背面有一个8脚的IC从来没有见过,后来查资料才知道原来是一个场效应管,叫4435A,现在的新材料真是太稀奇了!还有一个是20脚的IC MT8806-M应该是运放之类的东西吧!
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4435A部分资料如下:
       
DESCRIPTION
$ q7 {* J- D. ?The GE4435A uses advanced trench technology to provide
excellent RDS(ON), low gate charge. It has been optimized for
power management applications requiring a wide range of
gave drive voltage ratings (4.5V – 25V). It is ESD protected.
5 N. |8 x0 _! {( i9 o! \+ jGENERAL FEATURES
● VDS = -30V,ID = -8A RDS(ON) < 33mΩ @ VGS=-4.5V
RDS(ON) < 20mΩ @ VGS=-10V
% a+ G1 `) X; C5 }' p* r) J● High Power and current handing capability.
● Lead free product is acquired.
● Surface Mount Package.
● ESD Rating: 2000V HBM
* V+ ^- c+ ^8 `6 j7 Q/ Y5 q' a6 D6 KAPPLICATIONS
● Battery protection
. C5 M- \- A  j5 r* r● Load switch
● Power management

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sunboy99988

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su_36xxnn

类似封装的mos元件使用很多，比如硬盘电路板，便携的电源和充电器。

刘杰

学习了。谢谢

kssdz

满高端的，这个充电器