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本帖最后由 Heaven_1 于 2022-10-25 18:43 编辑 ) N4 }- P2 c1 p* N
% {& h+ P* B! z; J' ~. W& Z6 oDESCRIPTION
# O; M! {7 w( V' `4 O- U0 }The ZCC2467 is a high frequency step-down switching regulator with integrated
|. ^+ v, @% t. D- d4 _internal high-side, high voltage power MOSFET. It provides 3.0A output with
+ ^& A. R, n1 x; x9 ~current mode control for fast loop response and easy compensation.
& y7 j. a4 ~& C5 w8 n1 H+ n8 H1 iThe wide 6V to 40V input range accommodates a variety of step-down# K* S6 j. \( {) [
applications, including those in automotive systems. A 100μA operational
/ n7 C- `1 s$ T( r; X5 dquiescent current allows use in battery-powered applications.
/ z1 k [9 W) d: D/ K5 f; \& C" J" yHigh power conversion efficiency over a wide load range is achieved by, H) u/ D5 m: M% V
scaling down the switching frequency at light load condition to reduce the: d! ~8 {. E2 s+ X3 W" w
switching and gate driving losses. _$ q8 Z5 b( H1 {
The frequency foldback prevents inductor current runaway during startup and
8 o; a/ F5 S* {6 V+ F P/ {6 ?! a! _thermal shutdown provides reliable, fault tolerant operation.
4 k4 f2 ~* S; B5 V0 ?2 eThe ZCC2467 is available in thermally enhanced SOIC8 package.
* B6 G( X2 b0 K0 oFEATURES
0 }- V* ?4 i5 C9 b2 W5 c• 100μA Quiescent Current, x4 [( n$ t7 [0 U- p" ]9 b2 E4 L
• Wide 6V to 40V Operating Input Range8 D9 _- |5 _( @5 \/ A
• 150mΩ Internal Power MOSFET- p7 i. B( i# `/ r/ o# j
• 500kHz Fixed Switching Frequency
7 B( ~9 E3 T i _' V• Ceramic Capacitor Stable
$ V8 }; e% Q0 b! |3 o$ b• Internal Soft-Start0 }9 Z6 M5 {5 m9 @3 [
• Precision Current Limit without a Current Sensing Resistor
1 r+ c8 @% C* p* |# S• Up to 95% Efficiency
8 a9 T2 b' q+ Q# U) R) Y• Output Adjustable from 0.8V to 30V
# H. i/ F1 N6 t' j( u* u' e• Available in SOIC8 with Exposed Pad Packages- X" Z3 ~2 c4 T& t
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发表于 2022-10-25 18:02
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