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本帖最后由 Heaven_1 于 2022-10-25 18:43 编辑 * x% j" ]6 q5 f& P+ S+ o# @, r
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DESCRIPTION
- q4 N1 N1 B, |5 k MThe ZCC2467 is a high frequency step-down switching regulator with integrated; d6 Y8 h3 x7 A) Q2 A F
internal high-side, high voltage power MOSFET. It provides 3.0A output with
9 x1 E6 E+ w) n' z' h, q+ pcurrent mode control for fast loop response and easy compensation.
! H. H0 k! F$ J3 l" O# NThe wide 6V to 40V input range accommodates a variety of step-down
9 y' r9 ~& W: |applications, including those in automotive systems. A 100μA operational: [. G1 B. ?# ?0 }
quiescent current allows use in battery-powered applications.9 Y1 k& s3 Q4 T
High power conversion efficiency over a wide load range is achieved by8 F8 r' Y+ e6 P
scaling down the switching frequency at light load condition to reduce the3 V' M" y* C+ M; q: B
switching and gate driving losses.4 t% ^* s: C0 b3 @" A3 g' R. l' x) f; J8 `
The frequency foldback prevents inductor current runaway during startup and
3 M4 O% n2 T+ y% Q# @thermal shutdown provides reliable, fault tolerant operation.
1 V, S9 J: Z* n$ l" O7 yThe ZCC2467 is available in thermally enhanced SOIC8 package.
3 d: r# T% S& [; d9 k. gFEATURES( P. g4 c' U3 a6 k+ U- N
• 100μA Quiescent Current# y& [& S, Q& j/ X$ H, O
• Wide 6V to 40V Operating Input Range: W8 D/ a/ \0 v2 V# ~3 q( k8 @
• 150mΩ Internal Power MOSFET
* ?) Y2 b, y+ w }• 500kHz Fixed Switching Frequency1 P7 X" Q% u0 I6 T- [
• Ceramic Capacitor Stable
4 {6 A6 J9 H, |, m7 i5 e, x! i• Internal Soft-Start1 E/ f1 O, E. S- y0 e$ o" M# [
• Precision Current Limit without a Current Sensing Resistor
( S3 X7 l# F- w% b' A• Up to 95% Efficiency
6 \' B; S( ]* K% w$ N2 w% j' e ]: g• Output Adjustable from 0.8V to 30V) ~0 d7 ]' d; h$ w9 S5 e8 F
• Available in SOIC8 with Exposed Pad Packages
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发表于 2022-10-25 18:02
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