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本帖最后由 Heaven_1 于 2022-9-13 18:42 编辑 * [$ |& s8 |! x: Z
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DESCRIPTION
) J2 j, a. C( yThe ZCC2467 is a high frequency step-down switching regulator with integrated
" `" C8 V$ a: v) minternal high-side, high voltage power MOSFET. It provides 3.0A output with! X2 H- N. y( J& [) _' V! b; A+ @8 \# p
current mode control for fast loop response and easy compensation.
& @) M% F P9 e0 N' y- m% V# P" vThe wide 6V to 40V input range accommodates a variety of step-down
h8 P- p% }4 n& w' qapplications, including those in automotive systems. A 100μA operational8 Y. ~& f! I0 r5 D; h0 W7 W
quiescent current allows use in battery-powered applications.
5 L O! Z6 w3 U* c6 p5 U7 s* jHigh power conversion efficiency over a wide load range is achieved by
! r; N) Y$ S- \, c4 V' A6 Gscaling down the switching frequency at light load condition to reduce the- i! C7 [5 {- x9 x8 V* F3 H
switching and gate driving losses.% ^% p3 [6 K0 {
The frequency foldback prevents inductor current runaway during startup and& ?+ p$ j! b. U8 c6 F
thermal shutdown provides reliable, fault tolerant operation.
" X# I' e+ G# P) |& U( `' @The ZCC2467 is available in thermally enhanced SOIC8 package.
0 `4 u9 F4 c7 C# ]0 ~8 TFEATURES, R( _& a) _* o5 @% \
• 100μA Quiescent Current
7 p4 g7 d1 L0 o0 D* x$ E• Wide 6V to 40V Operating Input Range
5 w0 s0 M$ L- L• 150mΩ Internal Power MOSFET* h4 c- _7 j2 d* U* q% A
• 500kHz Fixed Switching Frequency% x: {- Y8 a. ~
• Ceramic Capacitor Stable) L! E) Z' r+ O1 A: j- E
• Internal Soft-Start
5 {, v% B9 f) Z4 Z: C* B0 C! {• Precision Current Limit without a Current Sensing Resistor* C/ d6 m, `# Q1 s% z$ Z
• Up to 95% Efficiency
/ y+ }( z6 p3 k3 D- J$ W• Output Adjustable from 0.8V to 30V5 M8 n& t, U: h1 ~
• Available in SOIC8 with Exposed Pad Packages
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发表于 2022-9-13 17:41
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