geko
Active Member
I just received this USB 5 volt charger from Banggood and popped it open to see what was inside. Not withstanding the fact it is just floating inside the case and the inductor is hanging by its leads.
It's supposed to be rated for 12-24 volt input, however to my mind the switcher IC is an MP1482DS, and is only rated to 20V DC input max. https://www.monolithicpower.com/Products/Product-Detail?ProductID=181
The circuit appears to be pretty much as the reference design in the datasheet and the switching frequency is ~350KHz. So unless I'm mistaken in identifying the IC would it be fair to say this should not be operated from a 24 volt supply?
It's supposed to be rated for 12-24 volt input, however to my mind the switcher IC is an MP1482DS, and is only rated to 20V DC input max. https://www.monolithicpower.com/Products/Product-Detail?ProductID=181
The circuit appears to be pretty much as the reference design in the datasheet and the switching frequency is ~350KHz. So unless I'm mistaken in identifying the IC would it be fair to say this should not be operated from a 24 volt supply?