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2022-8-5 15:55 |
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DESCRIPTION2 u# Q9 N0 m8 c2 j I! b4 t4 c1 B
The ZCC2467 is a high frequency step-down switching regulator with integrated U+ h! C! X, w/ S& O! |4 s
internal high-side, high voltage power MOSFET. It provides 3.0A output with
& D7 a1 P. q- K$ Ycurrent mode control for fast loop response and easy compensation.
6 c; b) R6 ?# n2 w" QThe wide 6V to 40V input range accommodates a variety of step-down
R: m w' t0 Happlications, including those in automotive systems. A 100μA operational
6 I0 o. ~8 A0 H% A) @quiescent current allows use in battery-powered applications.
6 v8 _& R" f8 Q/ i# qHigh power conversion efficiency over a wide load range is achieved by7 L& G3 q, F5 m( A; J' |: ?, y
scaling down the switching frequency at light load condition to reduce the
8 E" K4 A7 G3 e, }switching and gate driving losses.
. B" b: e$ Y% N) tThe frequency foldback prevents inductor current runaway during startup and
/ A5 F2 x$ c" ? `: Wthermal shutdown provides reliable, fault tolerant operation.- m* ^' t/ S9 s$ G) b5 D9 v8 g" i
The ZCC2467 is available in thermally enhanced SOIC8 package.
& g4 E% _' ?; X" M5 G8 h/ ZFEATURES* _+ [. O9 g! o$ h1 W- x% V4 l
• 100μA Quiescent Current" r! s' O _, V% I( N
• Wide 6V to 40V Operating Input Range4 s4 F6 |% A! E8 h7 B) k3 u
• 150mΩ Internal Power MOSFET
% m: H& h4 ]# p• 500kHz Fixed Switching Frequency* s: r# _0 d! r
• Ceramic Capacitor Stable
" v1 m y0 c' W, v, Z• Internal Soft-Start( b) J8 s6 U" Q" f) I' Q4 {
• Precision Current Limit without a Current Sensing Resistor# e3 z+ N* f$ ?1 l6 ]
• Up to 95% Efficiency
- L9 f9 U& @9 n v1 G• Output Adjustable from 0.8V to 30V
2 o8 t6 W7 i, x) t• Available in SOIC8 with Exposed Pad Packages6 t0 ~! t' C2 C7 u& _1 O# p
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发表于 2022-9-8 18:25
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