Question Pth08080 regulator

[Frenchiewii]

Hello
I frenchiewii
My projet is a wii u gamepad
And i wand help for my power management
I want use a 3,7v battry and a power boost to 7,4v
To alim a PTH08080 regulator to 1v 1,15 3,3v
For the USB i use a power boost 5v

iwant use 3,7v tension for charing with a usb charger my battry

it is a food practice ??
Or i possible to charge my batrry with usb charger but my battry serie on 7,4v. 3,7+3,7 ??

thank you for you help

sorry for my english

 

[Frenchiewii]

hello how then to charge two 3.7v battery to mount in series with a pcb charge usb in 3.7v

 

[Stitches]

RVL Power Management System

store.bitbuilt.net

USB-C PD Charging + Internal USB Drive

store.bitbuilt.net

You'll want both of those. Using a 5v boost reg will not charge the batteries, it'll destroy them. The PMS lets you power the Wii off 3.7v, and the USB-C PD allows USB charging.

 

[Frenchiewii]

ok look this , it is a regulateur charge in 3,7V ?? or a power up to charge in 7,4v ??

 

[Wesk]

Use a multimeter and measure the voltage at the B+ and B- solder points on the board.

 

[Stitches]

ok look this , it is a regulateur charge in 3,7V ?? or a power up to charge in 7,4v ?? View attachment 14780

I wouldn't use that power bank circuit, it most likely won't work. You need at least 2A of 5V to run a conservative portable and finding a power bank capable of sustaining that max current output is hit and miss.

But to answer your question, those cells are in parallel so the circuit charges them at 3.7v

 

[Frenchiewii]

Ok and that is

 

[Frenchiewii]

For the PTH regulator the résistance it is good
87,1k 1% for 1v
And 1,5k 1% for the 3,3V

For resistance the most identical in my possession

it is very specific ?