12V to 12.6V boost with current limit for 1Amps

[Vindhyachal.takniki]

Input is 12V, output I need is 12.6V with 1Amps current limit.
Output connected: Lithium battery 8.1V to 12.6V range and a resistive load in parallel.

Since battery is also connected at the output, so current limit is required. Otherwise battery drains huge current, if limit is not there

[Zero999]

What are you trying to do? Charge three lithium ion batteries from a 12V supply? You'll need a SEPIC converter and a specialised lithium ion charging IC.

[ledtester]

You should tell us more about what your application is -- I'm sure there are some assumptions not being stated.

For instance, do you want your load to be powered by the battery when the input power is taken away -- i.e. like a uninterruptible power supply? Do you want to charge the lithium 3S battery in a balanced fashion?

Some ideas:

- "Balanced 3S Lithium Cell Charger using the TP4056"

https://youtu.be/rpRYNMrVCk0

- The "ESP32 ESP32S For Wemos For Raspberry Pi 18650 Battery Charge Shield Board V3 Micro USB Port Type-A USB 0.5A For Arduino Charge" module:

https://youtu.be/joAkJ9QA2bw

[ledtester]

An updated video to the battery charge shield board review:

10 Battery Power Boards and “SuperPower” project (incl. selection table)

https://youtu.be/-SJbdPvgQnE