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本帖最后由 Heaven_1 于 2022-10-25 18:43 编辑 ! f) i* Z2 d0 I# H
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DESCRIPTION
& [ y, E, Z H( xThe ZCC2467 is a high frequency step-down switching regulator with integrated
$ Y2 k8 b% }5 jinternal high-side, high voltage power MOSFET. It provides 3.0A output with
3 M: d$ y, H3 h8 P/ P$ R# Xcurrent mode control for fast loop response and easy compensation.9 R; d8 i9 H( b; O9 [0 Z; a
The wide 6V to 40V input range accommodates a variety of step-down
8 U3 E& ?& j7 R' f4 @applications, including those in automotive systems. A 100μA operational1 [7 j& `% }7 O% D& y
quiescent current allows use in battery-powered applications.
+ t3 S5 O1 [5 X. o1 k7 i* Q, fHigh power conversion efficiency over a wide load range is achieved by
& H. U0 F5 V9 O; g* C2 n) q1 uscaling down the switching frequency at light load condition to reduce the
9 b; ~ i R b- Q( a, T$ {switching and gate driving losses.
9 Y! K8 A" V9 w! U- X2 ZThe frequency foldback prevents inductor current runaway during startup and
7 b+ O+ a, c) i6 e" Ethermal shutdown provides reliable, fault tolerant operation.
. i' f- p6 ~! ]& MThe ZCC2467 is available in thermally enhanced SOIC8 package.4 g, |* w' u# n6 F6 R$ |, C
FEATURES: S9 @0 V* L! @* ]
• 100μA Quiescent Current0 g' y+ y; q1 L; y I! C) r
• Wide 6V to 40V Operating Input Range
; E: Z3 b2 b. J# z) v" o• 150mΩ Internal Power MOSFET" F/ d7 |5 y% t; U% K# g
• 500kHz Fixed Switching Frequency
* k1 o; y0 e: c& T; ^4 }• Ceramic Capacitor Stable/ M0 ?9 B8 f' `) m1 s. w' K
• Internal Soft-Start6 ?+ {" Z; d% d
• Precision Current Limit without a Current Sensing Resistor& g( f8 h$ v4 m, I5 O ?% n: d4 z! P+ Y
• Up to 95% Efficiency# N0 J" l0 x0 W3 k# ? t
• Output Adjustable from 0.8V to 30V' N1 W5 ?6 l4 Z0 B5 K1 Z
• Available in SOIC8 with Exposed Pad Packages
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发表于 2022-10-25 18:02
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