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2022-8-5 15:55 |
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DESCRIPTION
1 b9 K2 T" M. ?- Y9 g- {$ sThe ZCC2467 is a high frequency step-down switching regulator with integrated
! b* u* _# R! E; X0 U: H# R3 _2 \internal high-side, high voltage power MOSFET. It provides 3.0A output with! r. u. E! t3 A M
current mode control for fast loop response and easy compensation.8 I X! g. {8 F. O. ?9 ~6 q
The wide 6V to 40V input range accommodates a variety of step-down
& c" O0 t/ W5 _6 a+ G0 U& w Z& ~% vapplications, including those in automotive systems. A 100μA operational, b7 u7 z+ r+ s
quiescent current allows use in battery-powered applications.* f" G* q0 y0 J, Y! U: O
High power conversion efficiency over a wide load range is achieved by. {. t, x& M% E7 Y6 _
scaling down the switching frequency at light load condition to reduce the
4 }3 F0 t1 K- n# c7 F5 ^switching and gate driving losses.* Z* L+ F7 `4 Q+ ]. H* v
The frequency foldback prevents inductor current runaway during startup and
3 _4 r1 c! n) c3 Jthermal shutdown provides reliable, fault tolerant operation.: \. f; r0 [% d& S
The ZCC2467 is available in thermally enhanced SOIC8 package.
2 ?, m: @3 C. O& m+ b0 z1 EFEATURES+ \3 }' \9 T. E4 h+ F1 X
• 100μA Quiescent Current
* @' y7 [3 ?! n8 P# {/ i• Wide 6V to 40V Operating Input Range# U. q2 h( W. a# d' E" T
• 150mΩ Internal Power MOSFET5 E0 r3 W! a! C l- l
• 500kHz Fixed Switching Frequency1 d0 y6 j, h& d H7 R
• Ceramic Capacitor Stable2 {$ i5 t; C$ q+ W" W5 V, A9 H7 _% w5 ~
• Internal Soft-Start
/ @, N- W3 c/ m! A! h v% c; ~* p+ H• Precision Current Limit without a Current Sensing Resistor
5 C' h4 C o: I `• Up to 95% Efficiency
6 {8 X* c! p; Z4 c/ z5 J @% T• Output Adjustable from 0.8V to 30V
9 E5 h0 c2 t- Y: L# E; c7 a: O$ E |
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发表于 2022-9-16 17:56
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