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
6 B' M: D( v" w■ Three-channel PMU:Buck,Boost
and
Super
capacitor charger
■
wide working range: 5V-40V
% ?  g! K! g* h/ D3 [/ B' Y■ 3.3V 450mA Output Power for Buck
/ P( z) B! j2 }9 d! n$ N$ i. [1 h■
12V 500mA Output Power for Boost at 2.7V
, e( s. ~( H' o# F- \$ Q& b3 t2 AInput
■
1% accuracy for Charger CV voltage and up
to 150mA constant charge current
9 i! u" D4 g- s, f: M: \' C■
High Efficiency PFM mode at light load for
Buck
9 W3 b6 ?+ J- M3 b8 l6 q■ Enable pin to auto-switch boost and charger
■
Available in ES0P8 and QFN3x4-24 Package
' j, w' ^' h9 }$ o& r+ ^; h3 k2 fAPPLICATIONS
! E- S  ^: _% M■ PLC modules
■ Power Meters
■ Any system that needs super capacitor as a
backup power
DESCRIPTION
% j. c/ {; J9 r: T8 ^( H' \ZCC4200 is a three-channel PMU that includes a
40V input, a high efficiency synchronous buck
2 J: E7 Z6 z/ w, a  ^3 h0 t* h9 f! Hconverter, a low startup, high efficiency 18V
boost converter and a super capacitor Charger.
: F/ J0 y. R& r2 o  B% V8 z) YThe buck converter withstands input voltage up
+ e9 J( K5 S- ], H' Qto 40V and delivers a 3.3V output with up to 450mA
current. The boost converter is capable of
1 @" s$ V" t9 ?2 s. m$ E/ O3 ~providing up to 500mA to 12V output from a single
  ^' u8 k9 A/ w$ _8 @cell super capacitor or a battery at 2.7V. A
0 K2 J! S: r* a. }3 [linear supercapacitor charge is also integrated with a very high accuracy CV voltage.
9 o% L* _* G- N9 h/ u$ E  rThe output voltage of boost can be adjusted by
" Q7 I0 j" t" u0 B/ Iexternal resistor divider. All three power
! d, G2 N- y8 B) Q# [4 l# Qmodules are packed into a single ES0P8 and
QFN3x4-24 package,beating the discrete
. y9 W# Y! r- f! g+ o% U3 qsolution in features, peRFormance, size, PCB
% [, h9 B0 y; z! V. Mlayout and cost
  L! @% S$ ]5 d+ o6 o. p# l, v) A