|
& S3 m0 ?8 i E p) B" j; F
建议使用MP2145,很多大公司都在用.6 m: t2 t! }" z0 z/ y: w2 _7 t" V
Up to 6A Output Current
2 h y' \3 m/ D Wide 2.8V-to-5.5V Operating Input Range( i4 g" B! I! R' H+ K
20mΩ and 12mΩ Internal Power MOSFETs
, U! \' ?4 h/ H 40μA Quiescent Current- Q8 _! }8 z# c( z9 A8 _( M
1.2MHz Fixed Switching Frequency2 G# _% Q" B( R. \: E* m
1% Feedback Accuracy
5 _- @) N, K4 b# j+ m E. L7 J% z" e External Mode Control
2 e% l) r6 h! x7 U: y { External VCON Control | k# A. a& b) J
Adjustable Output from 0.6V, d7 t, q' C5 n G4 L# x3 ?, ]
1.5ms Internal SS Time with Pre-Bias Startup1 E5 a( r4 q" g: j5 a- U1 s' ]/ D
Cycle-by-Cycle Over Current Protection
- t5 g) n" j& r$ Y Short Circuit Protection with Hiccup Mode
- `: g0 v4 k! L3 {9 O0 ` Stable with Low-ESR Output Ceramic$ E+ G+ F0 C2 A* Z
Capacitors' Z* f" x4 Z K3 u6 I, ]
Thermal Shutdown
: N0 W8 Y- Y% W: B+ y Available in a 2mm×3mm QFN Package
: O9 t6 h; p- E, U7 a- c Output Discharge Function$ x, [9 Y. |; L- J& o9 }* L; m
, X' D. o& C4 ~9 I5 Y5 Y# b+ l7 c
|
|