ZCC4200三通道PMU 带线性充电器的Buck和Boost变换器替代ETA9073

四维电子

FEATURES
( a+ c5 `# M2 z9 Q2 M■ Three-channel PMU:Buck,Boost
8 |2 J' h# @0 e1 J" Z# |( Oand
; h  e9 P, o- [$ y, q# @Super
, c% M) u" I! S7 _% ]: Zcapacitor charger
■
% P8 o5 w- }+ }( j7 lwide working range: 5V-40V
■ 3.3V 450mA Output Power for Buck
■
; h& i3 O/ n: r3 Q12V 500mA Output Power for Boost at 2.7V
Input
2 ^- ?, [5 f/ ]  B; K6 r) K■
1% accuracy for Charger CV voltage and up
& B2 t# G3 l% ]$ ~/ Kto 150mA constant charge current
. P0 {+ Y, M0 J9 m: D5 @# t■
, i# n% f" q: E6 `High Efficiency PFM mode at light load for
Buck
■ Enable pin to auto-switch boost and charger
■
8 b6 q& J. W) @- g- @9 j0 b! I' e$ iAvailable in ES0P8 and QFN3x4-24 Package
' q/ q2 ]3 d* a! i8 w/ bAPPLICATIONS
, q- d  @: K. w■ PLC modules
2 h' L! P* S/ _, U: J■ Power Meters
■ Any system that needs super capacitor as a
backup power
" E& @  N4 J$ a! IDESCRIPTION
  U: R- }2 Q9 Q# i) }, D5 KZCC4200 is a three-channel PMU that includes a
) A( u. d  F8 Z5 }/ _! p. ^+ R40V input, a high efficiency synchronous buck
converter, a low startup, high efficiency 18V
boost converter and a super capacitor Charger.
The buck converter withstands input voltage up
to 40V and delivers a 3.3V output with up to 450mA
current. The boost converter is capable of
& y  [% [  h4 w) [providing up to 500mA to 12V output from a single
/ q( e/ `% n" S1 U/ J7 ucell super capacitor or a battery at 2.7V. A
: p3 ^2 ?4 i  p: A4 K$ Ulinear supercapacitor charge is also integrated with a very high accuracy CV voltage.
The output voltage of boost can be adjusted by
external resistor divider. All three power
modules are packed into a single ES0P8 and
QFN3x4-24 package,beating the discrete
: [& Y6 _+ t+ A; B7 i/ Fsolution in features, peRFormance, size, PCB
layout and cost