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本帖最后由 Heaven_1 于 2022-10-25 18:43 编辑
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DESCRIPTION
* p: [ l* ? ~0 GThe ZCC2467 is a high frequency step-down switching regulator with integrated }6 `8 P* Q& Q9 |$ p( ^2 a$ K
internal high-side, high voltage power MOSFET. It provides 3.0A output with8 J8 g- h' V2 A! Z2 l4 Z2 ?0 l# O
current mode control for fast loop response and easy compensation.
1 j- j' v$ f* J3 T0 LThe wide 6V to 40V input range accommodates a variety of step-down$ t2 Z* S$ }8 X$ D
applications, including those in automotive systems. A 100μA operational; x- g5 O1 T4 q
quiescent current allows use in battery-powered applications.
1 I( X7 R6 |$ i" \; Y4 U2 uHigh power conversion efficiency over a wide load range is achieved by8 C' \0 ~+ N! `5 \8 H
scaling down the switching frequency at light load condition to reduce the5 F, D* s9 x( \
switching and gate driving losses.
: k/ m+ b0 b0 J: sThe frequency foldback prevents inductor current runaway during startup and
# O8 K9 l& \( ~' Sthermal shutdown provides reliable, fault tolerant operation.' `9 s* w. Z7 }/ {- p
The ZCC2467 is available in thermally enhanced SOIC8 package.
e9 n: O& ^' J- b J5 OFEATURES
& P o) s2 Y( y& _. K& ]• 100μA Quiescent Current
0 }' o# j* d1 o: S• Wide 6V to 40V Operating Input Range
% y! A; P7 w% F' E& k1 O& P3 i• 150mΩ Internal Power MOSFET' \5 h2 p- F4 @
• 500kHz Fixed Switching Frequency
2 Q7 _& F+ s/ {0 s0 f" ~• Ceramic Capacitor Stable& f! ~6 t" s( r) y
• Internal Soft-Start$ p" K% N( j0 U& K3 e) i
• Precision Current Limit without a Current Sensing Resistor
1 n. ~. X1 h9 e, W$ q' ~9 }• Up to 95% Efficiency
3 M& g& Y9 z3 C/ L; d• Output Adjustable from 0.8V to 30V/ l: o! I `' O6 e3 ]( f& E7 c
• Available in SOIC8 with Exposed Pad Packages
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发表于 2022-10-25 18:02
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