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" t5 }1 F* {1 Z建议使用MP2145,很多大公司都在用.2 r/ f" ]4 q( l4 R, P5 {4 ^( _& X
Up to 6A Output Current
9 I. L- I6 P1 _9 M- H Wide 2.8V-to-5.5V Operating Input Range$ V$ c/ C3 L; [* D% s
20mΩ and 12mΩ Internal Power MOSFETs6 D' y- |( F' ~7 R6 p5 u0 O
40μA Quiescent Current7 q# u+ I+ ? I' E. O# r8 H
1.2MHz Fixed Switching Frequency( E- _0 `9 O' s. R7 W9 E! H4 m
1% Feedback Accuracy
7 E- ?5 M5 E$ \& V External Mode Control
9 H' T" g* o7 @) \9 { p External VCON Control
K2 d4 F, {% V2 @ Adjustable Output from 0.6V& [- c. E/ Y/ N( c0 h
1.5ms Internal SS Time with Pre-Bias Startup
+ ~4 Z# F) s) O6 w5 } C Cycle-by-Cycle Over Current Protection/ Q7 }' `6 @( o8 i8 U
Short Circuit Protection with Hiccup Mode
% H8 ^, t5 A7 I( R1 H% V Stable with Low-ESR Output Ceramic
" j0 l$ Q% z# @. [% MCapacitors8 a3 W2 m. q" N) j
Thermal Shutdown" t; U7 R% M( z0 S& n6 ~* P' |
Available in a 2mm×3mm QFN Package
8 ?8 O8 ]. v4 l7 e Output Discharge Function+ z, b( X1 \4 ^# ~ _0 ~
3 P; p5 q3 V" K
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