The nPM1304 PMIC from Nordic affords exact gas gauging for merchandise with small rechargeable batteries and strict vitality budgets. It fees single-cell Li-ion, Li-poly, and LiFePO4 batteries—meant for units like good rings and trackers—with charging currents as little as 4 mA and a programmable termination voltage from 3.5 V to 4.65 V.
Estimating battery state of cost, the nPM1304 applies an algorithm-based gas gauging methodology that tracks voltage, present, and temperature alongside a mathematical battery mannequin. This method reportedly achieves accuracy similar to devoted gas gauge ICs, with out their added energy consumption or error accumulation.
In response to Nordic, devoted gas gauge ICs can draw as much as 50 µA throughout energetic operation and seven µA in sleep mode—vital figures for merchandise averaging simply 200 µA. In distinction, the nPM1304 consumes solely 8 µA when energetic and 0 in sleep, delivering correct state-of-charge estimates with out noticeably impacting battery life.
Along with battery charging (4 mA to 100 mA) and gas gauging, the nPM1304 gives two 200-mA buck regulators and two configurable 100-mA load switches or 50-mA LDOs.
Contact Nordic Gross sales to hitch the early sampling program.
The submit PMIC fits tiny wearables with low standby drain appeared first on EDN.
