Yoo Young Jae,
1. Yes. The schematic you've shared is from PMP9456. This is designed for a 6V lead-acid battery. To change the output voltage to 12V or 24V, you'll have to change D1.
2. It may slightly but if you want to adjust the output voltage…
What is your input voltage? What is the current rating and total wattage of the battery cells? How quickly do you need to charge the battery cells and once they are charged, do you need need the charger to float a potential or cut out power?
A quick…
Hi Jacky,
As far as I understand your system , you are charging 6V battery (probably PbAcid) using LM27313 with USB at its input . If that is the case , the better solution is to use single stage LM27313 Boost in Constant current ,Constant Voltage application…