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本帖最后由 Heaven_1 于 2022-9-13 18:42 编辑
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) K/ {( V. p6 O! E3 BDESCRIPTION: y* l% o) P! v+ O: Y; Y
The ZCC2467 is a high frequency step-down switching regulator with integrated7 e' j8 L; j! z% Y) d
internal high-side, high voltage power MOSFET. It provides 3.0A output with
: d: T1 k0 y2 F T8 \5 B. Kcurrent mode control for fast loop response and easy compensation.6 i" m0 p! \% U( J3 [+ v
The wide 6V to 40V input range accommodates a variety of step-down$ [) {; D; C+ D3 _) C
applications, including those in automotive systems. A 100μA operational
$ L8 }. o/ L/ G8 h2 q1 Oquiescent current allows use in battery-powered applications.
, K6 ]. T4 O2 Q8 I' x; a0 J* Q, mHigh power conversion efficiency over a wide load range is achieved by
) S: [& t2 ^. M0 Z6 {scaling down the switching frequency at light load condition to reduce the
8 T; i$ o1 @4 b% E" a% bswitching and gate driving losses.
2 n: e2 Q7 e$ {1 f* P4 b- P3 ~The frequency foldback prevents inductor current runaway during startup and6 R- z# x, Q1 K1 j- I& U
thermal shutdown provides reliable, fault tolerant operation.9 j' L! U. P- N7 B9 c
The ZCC2467 is available in thermally enhanced SOIC8 package.
( U& G; F R% {) M; i- K, GFEATURES; T3 Q! a1 K; R% v% T2 a/ P
• 100μA Quiescent Current n i- ~- E7 O% A( W2 ~0 X7 w4 ~/ w
• Wide 6V to 40V Operating Input Range
+ h3 }9 x& {4 N3 |3 V0 A• 150mΩ Internal Power MOSFET- r2 |! T) p' C# B
• 500kHz Fixed Switching Frequency
. B: ?1 a! v5 d" H$ @• Ceramic Capacitor Stable' V' l, Y7 A2 S7 M0 X5 K. p% e! t0 G
• Internal Soft-Start
N, H0 N3 ?( L( g: e8 b• Precision Current Limit without a Current Sensing Resistor
+ \" L7 @; d2 V e• Up to 95% Efficiency
: J" z4 \8 f$ o3 Y9 a• Output Adjustable from 0.8V to 30V
4 U( K; A$ `# U: `( }% s• Available in SOIC8 with Exposed Pad Packages2 X; n/ H0 m! @7 n: v
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发表于 2022-9-13 17:41
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