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本帖最后由 Heaven_1 于 2023-2-23 18:41 编辑
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FeaTures
# n6 {$ }+ R. O) E" s7 X4 \1 uHigh Efficiency: Up to 96%
U; P- x0 J% J. R% `" D# U( y5A Output Current6 d# S3 |& q5 b0 J+ v3 N, S9 N9 O7 x+ @
4V to 20V V IN Range/ c/ }: U% Y" [! }2 |7 a4 p, T) U
Integrated Power N-Channel MOSFETs3 ~' g* S9 C! M7 p. S% X% n
(70mΩ Top and 35mΩ Bottom), P4 O8 t' d% y2 P9 F: [
Adjustable Frequency 800kHz to 4MHz
+ O! F" ]# o4 u# x4 ?: ~3 z% RPolyPhase ® Operation (Up to 12 Phases); F( W v! i x
Output Tracking! ^8 E* T. U& g" z6 m" w9 v
0.6V ±1% Reference Accuracy
; C8 v3 b# H! m" H# {. N/ UCurrent Mode Operation for Excellent Line and Load
- E* W0 g/ t8 m3 m G+ Y3 V0 ^Transient Response; y% \( Q# X' j6 O, {! [9 C
ShutdownModeDrawsLessThan15μASupplyCurrent
, w; Y% G7 o- X6 {ZCC3605: 15V Absolute Maximum V IN
& F2 n0 K6 n( \8 ~& V2 aZCC3605A: 22V Absolute Maximum V IN- R' s! y T+ w. B
The ZCC3605AIs Pin Compatible with the
5 P( z' \& F/ k& C5 A0 OZCC3605
5 y8 v z) o/ AAvailable in 24-Pin (4mm 4mm) QFN Package
! A/ L2 B7 [) f8 i8 P) fapplicaTions
* U# R( n% ]7 R9 |% f, @Point of Load Power Supply% a0 k- `1 s; B; p* e
Portable Instruments' Y- I4 z7 o. R$ ]8 H
Distributed Power Systems. [" C3 E# R3 q# j" v& ]& [5 B! s
Battery-Powered Equipment/ }5 c: b. ?" J. W G
20V, 5A Synchronous Step-Down Regulator. `. n- G) a8 l6 b8 \* ?# Z
DescripTion. [% v3 Z5 q8 P8 F$ L4 f
The ZCC3605A is a high efficiency, monolithic
5 m. A( I/ A$ M8 X4 Usynchro- nous buck regulator using a phase lockable
0 `) {1 |* n/ C! A* r% v% econtrolled on-time constant frequency, current mode# \( r' O2 |# V/ E' I' e, ~6 V
architecture. PolyPhase operation allows multiple
+ e. z6 h) }8 e8 l7 IZCC3605A regula- torstorunoutofphasewhileusing' H, j: @2 d8 R* l" Z
minimal input and output capacitance. The operating, ^ ?* U, L) l0 [9 ^
supply voltage range isfrom 20V down to 4V, making it
/ z$ N1 n3 N9 }- T% q4 Xsuitable for dual, triple or quadruple lithium-ion
& S; x3 `) I: X, w3 E3 dbattery inputs as well as point of load power supply
" q3 a6 m) R0 R- F3 iapplicationsfroma12Vor5Vrail., H2 F7 @1 f8 M6 n
The operating frequency is programmable from 800kHz to
2 r* r3 g5 v! m% N4MHzwithanexternalresistor.Thehighfrequencycapa-3 }3 G6 m! f; g
bilityallowstheuseofsmallsuRFacemountinductors.For$ h) Z/ A4 S/ N7 R. G
switching noise sensitive applications, it can be externally
$ G4 u- |( W$ i1 h8 K& y" asynchronized from 800kHz to 4MHz. The PHMODE pin
- {; I8 d7 E; {' K5 B3 A6 ballowsusercontrolofthephaseoftheoutgoingclock2 |. o& D: m& w- Q
signal. The unique constant frequency/controlledon-time9 h I0 E- Y# g) O/ ~' o* [
architectureisidealforhighstep-downratioapplications s* S! J9 d# X( N
that are operating at high frequency while demanding
: J* A6 t M, I1 ~1 B }fast transient response. Twointernal phase-lock loops8 R& Z' ^3 T! g% p! N Q$ U
synchronize the internal oscillator to the externalclock& Q! ^( M n) x7 L
andalsoservostheregulatoron-timetolockontoeither
8 a7 t7 x! { v3 W" dtheinternalclockortheexternalclockifit’spresent.# b% ~* z2 _; _
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发表于 2023-2-23 17:49
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