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本帖最后由 Heaven_1 于 2023-2-23 18:41 编辑
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2 n7 Z1 n6 i1 o$ x0 w* k0 D2 K4 CFeaTures
# r( M3 E& @% p9 Y8 ` F( q0 wHigh Efficiency: Up to 96%. q! x; P$ g; L2 {( o
5A Output Current5 M! j% F L" y9 Z& o
4V to 20V V IN Range& f0 S' I1 P( C' w9 e
Integrated Power N-Channel MOSFETs& P# i6 W7 i9 b, K v
(70mΩ Top and 35mΩ Bottom)
- R- l# z% v# @9 c8 `- LAdjustable Frequency 800kHz to 4MHz. p3 f( ^# P8 W- q! j: o# m- n
PolyPhase ® Operation (Up to 12 Phases)
, Z( @) J) j1 k. ~Output Tracking
/ ~" @$ G* n) r2 j! o2 \0.6V ±1% Reference Accuracy
R& v6 x1 }* Z8 ~! }Current Mode Operation for Excellent Line and Load1 L* W) F. Z; e* e1 n
Transient Response
3 i2 H: \; k7 c+ rShutdownModeDrawsLessThan15μASupplyCurrent2 _. h' }3 a+ U# d
ZCC3605: 15V Absolute Maximum V IN
0 ?! X7 w& K4 C7 B/ X( ZZCC3605A: 22V Absolute Maximum V IN: @; Y5 x& K0 y5 F- t9 S
The ZCC3605AIs Pin Compatible with the
0 ^& E$ `5 E- E0 m/ v7 TZCC36058 V; Z3 f! Q$ f! o; s
Available in 24-Pin (4mm 4mm) QFN Package
" k2 R+ O# V- Q$ ^. h bapplicaTions
6 Z8 R) K+ g d; g, m1 OPoint of Load Power Supply
2 q8 }/ u) _8 M' b( JPortable Instruments. F" U( P4 M7 J b# N# T2 N4 b
Distributed Power Systems, P4 E% \- J' P. J# s
Battery-Powered Equipment; i2 a: P1 j7 f# }/ G: @
20V, 5A Synchronous Step-Down Regulator' E$ q0 S2 M3 t* T0 O+ u
DescripTion- ]% n( s) E" O
The ZCC3605A is a high efficiency, monolithic
% P; Z% o$ q% F7 vsynchro- nous buck regulator using a phase lockable
! B9 Z/ C8 X* D- D( ucontrolled on-time constant frequency, current mode% `; w1 x$ S8 E$ Z
architecture. PolyPhase operation allows multiple; F- V K. k* I2 R
ZCC3605A regula- torstorunoutofphasewhileusing
) o3 n2 B5 x* v$ A% D" c$ n% Cminimal input and output capacitance. The operating9 @3 p% C" N) M% E8 K
supply voltage range isfrom 20V down to 4V, making it$ n% R7 Z O M+ O2 C8 c
suitable for dual, triple or quadruple lithium-ion' T1 [8 f0 ~/ T4 N& u% I) S9 S
battery inputs as well as point of load power supply& p8 N0 H$ d5 Y$ s1 O
applicationsfroma12Vor5Vrail.1 e) b) Z* q5 D4 W
The operating frequency is programmable from 800kHz to
3 A8 O$ X' U( q' Z4MHzwithanexternalresistor.Thehighfrequencycapa-# ? ?2 I0 `- {/ m
bilityallowstheuseofsmallsuRFacemountinductors.For) s' A/ A1 K( c @, `* B. T9 g( r
switching noise sensitive applications, it can be externally
% G8 X$ [* [) _" F: w+ ?synchronized from 800kHz to 4MHz. The PHMODE pin3 X+ o( D) J9 z0 Q' }9 a0 x4 R
allowsusercontrolofthephaseoftheoutgoingclock
! v# ^3 B" d' g1 D4 z3 {8 Rsignal. The unique constant frequency/controlledon-time
8 \7 h9 i1 a9 X' yarchitectureisidealforhighstep-downratioapplications
/ e0 W" r, o; d& X M. ?that are operating at high frequency while demanding
/ X! ^0 j2 f9 I- y. w9 R+ Nfast transient response. Twointernal phase-lock loops
G8 g8 w+ l2 @ Nsynchronize the internal oscillator to the externalclock
/ ]# z T6 J% D$ u7 j9 `+ l+ [9 xandalsoservostheregulatoron-timetolockontoeither
3 D+ V+ T' i& G4 i# I% Ztheinternalclockortheexternalclockifit’spresent.
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/1 
发表于 2023-2-23 17:49
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