Lithium-Ion Battery Charger for Lighting

Design solution illustrates taking a Li-Ion single cell battery rated for 2.7 to 4.2V and adding a 0.55F Supercap in parallel with the battery to lower the battery current delivered when driving a 1A Flash using the SP7685 Flash driver. The SP7685 can deliver 1A output current to a Lumi LEDs PWF4 Flash LED