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
■ Three-channel PMU:Buck,Boost
. m) o& c& z5 @% M8 s: Z% dand
Super
capacitor charger
) R- r6 K6 P, |6 f% G■
wide working range: 5V-40V
■ 3.3V 450mA Output Power for Buck
$ W1 T4 e$ r) ?7 I$ K) U$ _■
/ D! s% {+ r/ ?7 w& a12V 500mA Output Power for Boost at 2.7V
: H7 Q: o% J; j- b; ~; SInput
■
1% accuracy for Charger CV voltage and up
; Z" O. P+ S( Z7 d0 Xto 150mA constant charge current
■
High Efficiency PFM mode at light load for
Buck
■ Enable pin to auto-switch boost and charger
1 H8 P" E# A+ [' ^4 k# M■
: `# L# i$ ]4 [- O; iAvailable in ES0P8 and QFN3x4-24 Package
) l8 s. `4 g! g+ {APPLICATIONS
6 z6 Q/ N: B% X( O& {! s■ PLC modules
■ Power Meters
! _, ~1 O0 z8 ?- T) G■ Any system that needs super capacitor as a
! s3 _- M$ u6 a* T: ^# C5 fbackup power
1 h' W4 {/ p3 o: b5 ~1 s) |. HDESCRIPTION
6 n9 _( \+ n$ w4 W; E' xZCC4200 is a three-channel PMU that includes a
40V input, a high efficiency synchronous buck
3 X9 P% R/ [3 V4 M- r5 A; p& \% Dconverter, a low startup, high efficiency 18V
0 w, n- I. t9 X8 f/ fboost converter and a super capacitor Charger.
The buck converter withstands input voltage up
) Y" M- j! p& b/ H7 Lto 40V and delivers a 3.3V output with up to 450mA
current. The boost converter is capable of
1 I/ x- r& M4 |4 D* z/ s" r) sproviding up to 500mA to 12V output from a single
; x* @2 [9 ]/ s9 f, t% ?  scell super capacitor or a battery at 2.7V. A
linear supercapacitor charge is also integrated with a very high accuracy CV voltage.
( j+ N' c; p/ _& K$ G. u  Y) {The output voltage of boost can be adjusted by
external resistor divider. All three power
7 T. g' _# X- Kmodules are packed into a single ES0P8 and
# N/ k8 q; T) x9 x: r* i5 HQFN3x4-24 package,beating the discrete
- F; Q6 H# g' b3 g0 bsolution in features, peRFormance, size, PCB
layout and cost