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本帖最后由 Heaven_1 于 2022-9-13 18:42 编辑
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' \0 }9 Q0 s2 K3 hDESCRIPTION
2 }5 V7 j% w7 u' h1 K* _; RThe ZCC2467 is a high frequency step-down switching regulator with integrated; A/ ?* t3 r N6 c& I4 ?! n0 ~
internal high-side, high voltage power MOSFET. It provides 3.0A output with
$ ?9 ]9 L& q4 G; b; U8 O" \) Bcurrent mode control for fast loop response and easy compensation.( U+ w8 P x% j; v7 f) G, ^+ j
The wide 6V to 40V input range accommodates a variety of step-down- Z+ V( ?, ~1 N% S
applications, including those in automotive systems. A 100μA operational8 a+ s+ L; a; F* h5 c ^
quiescent current allows use in battery-powered applications./ ~1 k% I+ h: b& r
High power conversion efficiency over a wide load range is achieved by* g, @( y6 v/ g7 [. c
scaling down the switching frequency at light load condition to reduce the
% D+ h! Y7 H3 Y% Z E$ Jswitching and gate driving losses.% \7 t+ A( g6 I$ r
The frequency foldback prevents inductor current runaway during startup and2 ` z- c. |, |& l9 |
thermal shutdown provides reliable, fault tolerant operation.
" m/ J4 _0 r- m. z) mThe ZCC2467 is available in thermally enhanced SOIC8 package.+ a. { ^- g& W* `
FEATURES# ^; d# f) A7 d [; G
• 100μA Quiescent Current
- V0 a% ]9 I) l; A" X• Wide 6V to 40V Operating Input Range
6 ~1 ]2 I8 ^9 x8 v# y• 150mΩ Internal Power MOSFET
4 Q# u) D$ u: ~$ p% E• 500kHz Fixed Switching Frequency
; f' e# K, @" a• Ceramic Capacitor Stable
1 i3 c$ R9 _ l% e ]! [ Z* o• Internal Soft-Start
3 [3 r3 i7 e- S) z8 V7 r• Precision Current Limit without a Current Sensing Resistor) T, Z1 D3 p$ S; ^
• Up to 95% Efficiency$ Z* \& x1 i) W: j5 J
• Output Adjustable from 0.8V to 30V' m N' J w9 t: D9 d" _ J
• Available in SOIC8 with Exposed Pad Packages$ l8 x, ?9 l/ k2 c0 ]' \( q; i( ]
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发表于 2022-9-13 17:41
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