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2022-8-5 15:55 |
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签到天数: 11 天 [LV.3]偶尔看看II
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FeaTures
6 p: a9 e3 c" k( T3 v! GHigh Efficiency: Up to 96%
2 o% D+ H5 J% m: W, A% |5A Output Current
4 F" h' ~- c7 H0 y; r# ~4V to 20V V IN Range# @* L, N; a, ^( F6 Y3 W
Integrated Power N-Channel MOSFETs, _6 Q T6 t4 d. r) T% r
(70mΩ Top and 35mΩ Bottom)
" q# g8 j- {6 G/ t8 o8 K" x8 QAdjustable Frequency 800kHz to 4MHz
9 W5 m7 H! E) ~( fPolyPhase ® Operation (Up to 12 Phases)7 i% `, i$ m( F
Output Tracking
( q' X) k8 E/ G. G0.6V ±1% Reference Accuracy
/ w s, Z9 J# m9 Q! t2 HCurrent Mode Operation for Excellent Line and Load8 M. J1 O( Z3 D" v8 g7 v
Transient Response. U3 S6 b/ A) u4 S1 s4 z- `
ShutdownModeDrawsLessThan15μASupplyCurrent
4 e, f) p% q5 R1 H% Y, i3 ^( v5 D/ LZCC3605: 15V Absolute Maximum V IN$ N( G4 _/ [6 x. }
ZCC3605A: 22V Absolute Maximum V IN
9 z- k2 e" j6 G4 I9 y7 bThe ZCC3605AIs Pin Compatible with the0 A2 v0 E+ V( x: z. W, V) U* {' `6 S
ZCC3605( k5 W3 e. l; u' ^! f1 K2 S/ K
Available in 24-Pin (4mm 4mm) QFN Package
2 Q* c, U- x/ O% MapplicaTions$ U# ?5 W4 B4 w2 y7 w. v2 b3 `
Point of Load Power Supply
2 S( }- S Z: _) q: S. C% GPortable Instruments' y P+ Q' |5 Q4 P
Distributed Power Systems
# [; Z5 O& L: d0 G6 i- C% bBattery-Powered Equipment$ }- |* a7 S, _ A1 G# r3 k6 T* }3 H
20V, 5A Synchronous Step-Down Regulator
S- [# Y! }. v( r( f& zDescripTion
8 g$ [6 Q& w* [6 L& k2 ?The ZCC3605A is a high efficiency, monolithic
8 G" R8 z5 l! O/ qsynchro- nous buck regulator using a phase lockable
' g3 g0 p9 A* x: h* ]# g8 R7 fcontrolled on-time constant frequency, current mode
6 U( t" u8 t+ V" k" Zarchitecture. PolyPhase operation allows multiple5 A/ N) X; l; F5 I2 q* t3 a
ZCC3605A regula- torstorunoutofphasewhileusing: C4 j N% D) i
minimal input and output capacitance. The operating
" c' Y1 k, s+ y1 D" `supply voltage range isfrom 20V down to 4V, making it
, w/ G1 F" W1 ysuitable for dual, triple or quadruple lithium-ion# P8 A8 P6 E! `
battery inputs as well as point of load power supply
( |: X _8 O2 K P2 W4 O9 C+ |/ tapplicationsfroma12Vor5Vrail.5 M& _9 c. C4 Z: Z( a
The operating frequency is programmable from 800kHz to6 P3 x& A- [/ y8 C) ~
4MHzwithanexternalresistor.Thehighfrequencycapa-) `# p( s$ e% m i2 E
bilityallowstheuseofsmallsuRFacemountinductors.For
* J, H1 V, \, Sswitching noise sensitive applications, it can be externally
1 p5 B% p+ Q7 g/ f5 y0 F9 T2 Y% Qsynchronized from 800kHz to 4MHz. The PHMODE pin+ j. ?' x6 h" M% T& N
allowsusercontrolofthephaseoftheoutgoingclock
% g! Z9 u: C* Q% U: y, n s% }signal. The unique constant frequency/controlledon-time1 ~: P( H) `, A9 \& \- n7 \* o
architectureisidealforhighstep-downratioapplications
$ q# v9 ?; d; ? I! t' ~7 `that are operating at high frequency while demanding" M/ C6 _" Y, j' {+ V9 W
fast transient response. Twointernal phase-lock loops& U0 P+ ?5 F# z/ B) P3 k5 B
synchronize the internal oscillator to the externalclock& W3 N$ z5 q6 U3 U: n
andalsoservostheregulatoron-timetolockontoeither9 ]! E2 B# p, ]
theinternalclockortheexternalclockifit’spresent.
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发表于 2023-3-3 18:23
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