Circuit Lake

Electronic Project and Circuit Collection

Simple USB Charger

12/24/2009 Category: Analog, Power Supply, USB

iPhone USB charger project

This is simple but very powerful USB charger project for your gadget like mp3 player, camera, cell phone, and any other gadget you can plug into a USB port to charge. Main component of the project is LT1302, Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters from Linear.

The charger circuitry and 2 AA batteries fit into an Altoids gum tin, and will run your iPod for hours, 2.5x more than you’d get from a 9V USB charger. You can use rechargeable batteries too. I think this powerful USB charger suitable people who often work in outdoor place or when you are going to traveling.

USB charger schematic
© ladyada

Portable Charger
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