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, q; D3 \: I7 \0 Y, W2 A7 R& s建议使用MP2145,很多大公司都在用.
: u8 u) s. ~/ h8 ?0 `Up to 6A Output Current c1 h% \& f% e; \0 p- b7 x" z+ K
Wide 2.8V-to-5.5V Operating Input Range) u3 C' u$ M5 i/ C2 i# U
20mΩ and 12mΩ Internal Power MOSFETs
7 [7 m2 G! ~! L& A 40μA Quiescent Current/ g; Y- t8 w5 s: B
1.2MHz Fixed Switching Frequency* ?2 o- U, q+ n( u" H+ K
1% Feedback Accuracy" l: Y# I4 i# n! _' e
External Mode Control' X4 H" h! s6 `3 r8 w9 f! C# e; V
External VCON Control. ?; r1 q, L1 b; t. L- a
Adjustable Output from 0.6V, J% o/ R8 A- _# c7 |
1.5ms Internal SS Time with Pre-Bias Startup
+ V( q* K \( w( G* h Cycle-by-Cycle Over Current Protection
. K) C3 F0 x' [) B; [ Short Circuit Protection with Hiccup Mode
5 S6 n5 C7 f7 Y5 t4 [, i Stable with Low-ESR Output Ceramic, u! c! U) [! H8 j
Capacitors
! L4 |- U* U2 @1 N* j Thermal Shutdown$ Z! C0 [) g2 j9 {
Available in a 2mm×3mm QFN Package$ ]" C% o( K* T1 }
Output Discharge Function
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发表于 2015-5-13 14:24
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支持！
反对！
发表于 2015-5-14 16:38
