Hi, I'm making a LED bulb and I want to ask for a constant current LED driver circuit diagram with good efficiency to drive 10 pieces parallel 5730 LEDs at 700mA,
power source is an 1800mAh 18650 battery (4.2V when fully charged),
LED forward voltage drop is around 3.28V,
a TP4056 (with battery protection) charger module is used.
I don't like series resistor driver because of dimming after some minutes, and I can accept shorter running time.
power source is an 1800mAh 18650 battery (4.2V when fully charged),
LED forward voltage drop is around 3.28V,
a TP4056 (with battery protection) charger module is used.
I don't like series resistor driver because of dimming after some minutes, and I can accept shorter running time.