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本帖最后由 Heaven_1 于 2023-2-28 09:56 编辑 ( C8 z/ {# [7 A D: o& z( O
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DESCRIPTION
! N2 ^+ J; T, ?- X( U$ CThe ZCC2467 is a high frequency step-down switching regulator with integrated2 Q& {) X5 n. L0 N
internal high-side, high voltage power MOSFET. It provides 3.0A output with
3 I. I$ `" M' t7 C1 h* s1 X- ucurrent mode control for fast loop response and easy compensation.. u- e7 B% q5 s/ k! ~' w6 E% a
The wide 6V to 40V input range accommodates a variety of step-down" `! i' ^! i9 i1 e- L
applications, including those in automotive systems. A 100μA operational7 M& T5 D0 N2 b$ o8 {* N
quiescent current allows use in battery-powered applications.
/ m( G8 k6 c( W. KHigh power conversion efficiency over a wide load range is achieved by
2 X4 w# k9 Z9 kscaling down the switching frequency at light load condition to reduce the
$ X% D3 B$ t5 u9 [switching and gate driving losses.
: B) C' V. A7 G$ l$ dThe frequency foldback prevents inductor current runaway during startup and: ~& [0 y, Z+ y1 d. y; {+ E) ^* a3 g
thermal shutdown provides reliable, fault tolerant operation.
3 _2 U& G: R# g( n# LThe ZCC2467 is available in thermally enhanced SOIC8 package." n* i" [1 p! U# @7 R9 u! S8 l
FEATURES. P' D1 k1 F _/ r- y
• 100μA Quiescent Current w6 t& Q0 u( b0 i' g( \0 o; N
• Wide 6V to 40V Operating Input Range
2 Y& }& L1 [4 G: M8 b• 150mΩ Internal Power MOSFET
) a0 N: q6 Q8 e9 j• 500kHz Fixed Switching Frequency
; |. b' [' s* _2 D* f• Ceramic Capacitor Stable
+ x1 A; t* o8 w• Internal Soft-Start2 ~3 N V+ L$ {( G) v3 X V
• Precision Current Limit without a Current Sensing Resistor
1 C$ @! K8 g* V$ K+ c• Up to 95% Efficiency
7 j. Q+ N+ i- `& P• Output Adjustable from 0.8V to 30V8 F+ p* {; N" n8 }8 U, Y
• Available in SOIC8 with Exposed Pad Packages
5 B8 f6 o6 p- L7 E/ ^APPLICATIONS
& Q# o. y* m! K6 @1 }5 F" `• Game Machines
/ I# E4 w( `& i• Automotive Systems
t% U, V# N: Y) L1 q+ Q6 A• Industrial Power Systems/ ] Q/ E: W9 e( _( U
• Distributed Power Systems4 s8 I. W+ l( `4 N
• Printer Systems
) b5 `# q6 X+ G; j* j) B• Battery Powered Systems
6 q$ V+ G3 A2 c C, N2 s![]() # Q! A* g; p$ f8 K- M+ X" o
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发表于 2023-2-27 18:10
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