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2 b+ o3 \, B/ n- N% Q# f) r建议使用MP2145,很多大公司都在用.
5 F9 Z, @8 f3 Z( `0 h7 e' QUp to 6A Output Current$ u, m1 T# ]6 ]' m
Wide 2.8V-to-5.5V Operating Input Range
- G- `0 Z( O% M* q( S& A. A K 20mΩ and 12mΩ Internal Power MOSFETs
! C4 V) H4 ]1 ^5 l/ R3 b- J6 Z 40μA Quiescent Current5 z6 A, Q8 _; \( L
1.2MHz Fixed Switching Frequency7 _' J' ]5 z& f; N' m3 l
1% Feedback Accuracy
/ S0 r. V( f' m& F7 d8 G0 E/ F External Mode Control/ q- U* x5 Y6 t3 Z
External VCON Control
) m+ k2 ~! F' D6 e7 I0 N6 R Adjustable Output from 0.6V
& W9 _5 P' ]+ S7 h" i8 [ 1.5ms Internal SS Time with Pre-Bias Startup
9 `, k' {2 ?: c: v" I Cycle-by-Cycle Over Current Protection
& s# J) M# ?( V7 @ Short Circuit Protection with Hiccup Mode
3 P! E, d- a8 L# [2 v2 C8 M0 M0 C Stable with Low-ESR Output Ceramic
- I. R# @! i5 X+ d6 m k8 k3 e- cCapacitors
6 q& F& ~" Z2 H Thermal Shutdown( i* y: l# Z5 c& r( m1 w# h
Available in a 2mm×3mm QFN Package
% r- K! S# F( l' Q; S. n% Y! h Output Discharge Function# m( R6 f& C M. {0 N5 s' m
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