I'm getting crazy trying to figure out if there is any easy way to power up a SINGLE 3w led
3w - Forward Voltage: DC 3.2-3.4V - Forward Current: 500-700mA
with a single 18650 li-on battery
Minimum Capacity: 2250mAh (0.54A discharge at 20°C) Typical Capacity: 2100mAh (0.54A discharge at 20°C) Nominal Voltage: 3.6V Discharge End Voltage: 2.5V Standard Charging Current: 1.1A Charging Voltage: 4.20±0.03V Standard Charging Time: 4.0hours Max. Continuous Discharging Current: 2.2A Internal Resistance: less than 35mΩ Weight: less than 47.0g
Is there anyway to do it without using a dc-dc buck converter? I'm trying to change a led on a torch, so I have not so much space to work in.