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本帖最后由 Heaven_1 于 2022-9-13 18:42 编辑 5 c# P. `+ I4 z4 D
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DESCRIPTION
0 ^1 m) l2 B) GThe ZCC2467 is a high frequency step-down switching regulator with integrated* |' `3 H7 t6 x
internal high-side, high voltage power MOSFET. It provides 3.0A output with
5 U, ?' Y6 M& ?0 Z5 X0 Vcurrent mode control for fast loop response and easy compensation.& f( ~) K1 R! P: K
The wide 6V to 40V input range accommodates a variety of step-down: W3 m8 K8 E' k& }7 j, n$ P
applications, including those in automotive systems. A 100μA operational- t; K9 x% f. w. X( x" z' a, T' j5 o
quiescent current allows use in battery-powered applications.
; I3 q1 p; `1 X |; YHigh power conversion efficiency over a wide load range is achieved by
2 n2 Q- ] E4 n' }# b) ]7 }scaling down the switching frequency at light load condition to reduce the; h. R" H; |4 y- T" S. c( z2 ~* C
switching and gate driving losses.0 n$ h$ L0 L+ b+ ^" U# y
The frequency foldback prevents inductor current runaway during startup and) \: n5 R! b* W6 j4 Y [
thermal shutdown provides reliable, fault tolerant operation.$ ^. F0 K5 @3 F& H' K7 o! m
The ZCC2467 is available in thermally enhanced SOIC8 package.3 W) @% Y Y2 @8 K" L N
FEATURES
& d- q7 g b+ `3 n6 h, o* B, g• 100μA Quiescent Current
# P( r8 `; l5 ]9 d" u7 g• Wide 6V to 40V Operating Input Range
+ S4 W, h( y5 ^- R0 Z! d5 m+ }: m• 150mΩ Internal Power MOSFET5 m, E9 \( A B8 }0 Y
• 500kHz Fixed Switching Frequency
' g- S3 d) n; ^' f }0 {• Ceramic Capacitor Stable
6 [8 l2 D: c) L, l" j8 n( f• Internal Soft-Start
$ R3 O0 x$ u& ]• Precision Current Limit without a Current Sensing Resistor6 ~- }8 ]- {, x7 h- X: B
• Up to 95% Efficiency; \; F* n6 t7 l9 I8 g
• Output Adjustable from 0.8V to 30V2 U7 U9 W1 e# S2 e
• Available in SOIC8 with Exposed Pad Packages8 T' G) b0 M# h0 }% a) N
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发表于 2022-9-13 17:41
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