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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:' T. C4 H& y& E6 @
) o+ [5 B1 R* a- D: O) T8 z. W! `DESCRIPTION
" ]5 E2 ^3 W E0 Y, YThe GE4435A uses advanced trench technology to provide9 O/ f, @3 o+ {4 ^, G
excellent RDS(ON), low gate charge. It has been optimized for
$ m& E: G0 Y W7 P9 U8 qpower management applications requiring a wide range of
* R6 s- y2 Z8 c2 Z8 k) l4 o" Bgave drive voltage ratings (4.5V – 25V). It is ESD protected.
( }: E* T& j+ E* o9 y0 s, e/ QGENERAL FEATURES
+ Q) ?, }, _- h- r8 l6 O● VDS = -30V,ID = -8A RDS(ON) < 33mΩ @ VGS=-4.5V) k# i: X! U" u; p
RDS(ON) < 20mΩ @ VGS=-10V
( p6 \" f7 d. o" S/ ~● High Power and current handing capability." W `, j: B0 B$ k5 F' E
● Lead free product is acquired.3 i, Q# n( P( R; b
● Surface Mount Package./ @5 ]9 R% f9 W$ D" X5 U
● ESD Rating: 2000V HBM
# B* w5 O. t- `* jAPPLICATIONS
$ v7 X; y; p# }2 T; b' d# K( D● Battery protection
) b7 ^( X- G/ J, G( ]$ U● Load switch
$ y- `, a1 k4 l3 M. W● Power management
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