Hey everyone, this is my first time posting here so bear with me and please let me know if I break any forum rules in this post.
I am working on a project for one of my classes that needs a lithium ion battery to power the circuit. The digikey part number is 1568-1488-ND. The charge voltage is 4.2V and the charge current is anywhere between 1300mA and 2600mA. I was hoping to use a usb power supply, like the ones that you would use to charge your phone. If my understanding is correct, these power bricks convert 120V AC from the outlet to 5V DC at the usb plug. So I'm hoping to be pointed in the right direction to design a circuit to convert this 5V DC to 4.2V DC with 1.3A to 2.6A at the output. I understand I could use an IC chip but the cost needs to be as low as possible. Thank you.
I am working on a project for one of my classes that needs a lithium ion battery to power the circuit. The digikey part number is 1568-1488-ND. The charge voltage is 4.2V and the charge current is anywhere between 1300mA and 2600mA. I was hoping to use a usb power supply, like the ones that you would use to charge your phone. If my understanding is correct, these power bricks convert 120V AC from the outlet to 5V DC at the usb plug. So I'm hoping to be pointed in the right direction to design a circuit to convert this 5V DC to 4.2V DC with 1.3A to 2.6A at the output. I understand I could use an IC chip but the cost needs to be as low as possible. Thank you.