I need a electronic circuit designer for a DIY project.
I have a custom build flashlight with 4s5p 3W LED. Battery source is 4s5p 18650 2600mAH.
What i need is a circuit that act as:
- Current limiter to the LED at 700mA (Regulated current)
- Battery over discharge protection at [url removed, login to view] / cell (cut off current)
- Battery charger with overcharge protection at [url removed, login to view] / cell (cut of current & maintain voltage)
- 3 mode switch :
- Step 1 : 3 set series LED array ON
- Step 2 : all LED ON
- Step 3 : OFF
IMPORTANT NOTE: The size of the circuit should be very small & compact, BUT RELIABILITY should be a PRIORITY
Please feel free to ask for more details