|
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 |
