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本帖最后由 Heaven_1 于 2023-2-23 18:41 编辑
% h( a0 x7 Y/ U0 D4 ^# d7 M
6 u7 Q. J: g2 m/ D( f5 hFeaTures( S8 k' F7 n( R7 k. S
High Efficiency: Up to 96%
# [+ P$ {: b. Y; X5A Output Current
$ G0 w4 }' t# G1 a- U4V to 20V V IN Range
- Q5 p! A' E# M" s, aIntegrated Power N-Channel MOSFETs
- |- k. B8 e6 w: w; s( Z: s(70mΩ Top and 35mΩ Bottom)
4 `% i$ p' Z P4 J3 e7 `; HAdjustable Frequency 800kHz to 4MHz8 K8 M- Y: O8 s3 {( V7 `' s
PolyPhase ® Operation (Up to 12 Phases)
* n2 L$ v* g; t) J) {Output Tracking% ~; c/ z7 @3 J! W; l' J3 y/ a
0.6V ±1% Reference Accuracy
5 f7 I" z3 H7 ?+ _: ]9 G/ e( KCurrent Mode Operation for Excellent Line and Load: u# l% S5 Z |% m5 C+ o. E& v* C
Transient Response
# o$ R. g+ ?) m; OShutdownModeDrawsLessThan15μASupplyCurrent/ I' U4 ?4 d; M' L [
ZCC3605: 15V Absolute Maximum V IN
) M9 a+ w6 l" {9 _ZCC3605A: 22V Absolute Maximum V IN
- l! ]6 b: V+ `. u5 m( E GThe ZCC3605AIs Pin Compatible with the
* W6 e' |/ Y0 D4 U% O! jZCC3605* a5 r& I& g+ q) _. ?/ R7 Z U
Available in 24-Pin (4mm 4mm) QFN Package. a+ N3 n) K/ O& w
applicaTions; X0 `2 Q7 ?" ]
Point of Load Power Supply6 M8 _1 \8 `# p9 h
Portable Instruments
0 v: Y- ]+ k8 q8 M5 g, w2 K0 MDistributed Power Systems2 [% b6 m% I1 j# z$ S
Battery-Powered Equipment: W: n& y7 I: a% c9 z
20V, 5A Synchronous Step-Down Regulator6 m0 E; B Q8 k5 ~' S8 ^
DescripTion
( C" `! k1 |* Y! V/ IThe ZCC3605A is a high efficiency, monolithic/ N0 j) _/ @8 {3 [7 [5 P3 H# N
synchro- nous buck regulator using a phase lockable/ D% U+ Q$ r! t b$ w2 u$ N$ x
controlled on-time constant frequency, current mode0 b9 W( Z0 o5 S
architecture. PolyPhase operation allows multiple2 O8 j: }, ^6 @/ F) ]6 ?
ZCC3605A regula- torstorunoutofphasewhileusing
4 Z* e/ c% b1 L7 l bminimal input and output capacitance. The operating7 V, ]7 s* D4 B8 ~4 G9 L
supply voltage range isfrom 20V down to 4V, making it6 z0 N# q& U$ z$ U1 [/ S
suitable for dual, triple or quadruple lithium-ion
6 i3 j: t* W% G* Hbattery inputs as well as point of load power supply
' i5 |( h# y2 ?9 E- `applicationsfroma12Vor5Vrail.% U/ |4 z) y- O- ]8 A2 e& G
The operating frequency is programmable from 800kHz to
" T7 U% o/ F1 n/ m- `4MHzwithanexternalresistor.Thehighfrequencycapa-
6 k. d( w% ^2 J6 a. x3 JbilityallowstheuseofsmallsuRFacemountinductors.For
6 O4 w( M& `. W2 T, p, J7 l$ {switching noise sensitive applications, it can be externally9 E5 q! E- n( w+ O& ~" ^: F1 g
synchronized from 800kHz to 4MHz. The PHMODE pin
) ?1 w5 A' n9 A: rallowsusercontrolofthephaseoftheoutgoingclock6 k* W& p+ c& o m; K
signal. The unique constant frequency/controlledon-time
: f; y E) P% U7 `& p( [architectureisidealforhighstep-downratioapplications
* N6 C# V# ?1 d1 |& a) X$ _that are operating at high frequency while demanding
* d8 o& G' ~$ L! i- y$ [fast transient response. Twointernal phase-lock loops
, D0 _1 B1 }7 o% ^synchronize the internal oscillator to the externalclock% y; n' `7 Q, P" Y Q/ _8 a
andalsoservostheregulatoron-timetolockontoeither
" g! y j2 \: x* {1 Ctheinternalclockortheexternalclockifit’spresent.8 ^- Y8 T: C7 p: @8 c
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发表于 2023-2-23 17:49
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