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

ZCC4200三通道PMU 带线性充电器的Buck和Boost变换器替代ETA9073 [复制链接]

FEATURES
■ Three-channel PMU:Buck,Boost
and
Super
capacitor charger
■
wide working range: 5V-40V
■ 3.3V 450mA Output Power for Buck
■
12V 500mA Output Power for Boost at 2.7V
Input
■
1% accuracy for Charger CV voltage and up
to 150mA constant charge current
■
High Efficiency PFM mode at light load for
Buck
■ Enable pin to auto-switch boost and charger
■
Available in ES0P8 and QFN3x4-24 Package
APPLICATIONS
■ PLC modules
■ Power Meters
■ Any system that needs super capacitor as a
backup power
DESCRIPTION
ZCC4200 is a three-channel PMU that includes a
40V 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
providing up to 500mA to 12V output from a single
cell super capacitor or a battery at 2.7V. A
linear 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
solution in features, performance, size, PCB
layout and cost