Integrating an efficient boost regulator, the nPM2100 PMIC from Nordic Semiconductor prolongs the life of primary non-rechargeable batteries. Along with a range of energy-saving features, the device ensures that the full charge is used before the cell is discarded.
Powered by an input voltage range of 0.7 V to 3.4 V, the nPM2100’s boost regulator provides an output voltage from 1.8 V to 3.3 V, with a maximum current of 150 mA. It also drives a load switch/LDO, supplying up to 50 mA across an output range of 0.8 V to 3.0 V. The regulator features a quiescent current of 150 nA, with power conversion efficiency of up to 95% at 50 mA and 90.5% at 10 µA.
The nPM2100 manages the power supply for low-power SoCs and MCUs, including Nordic’s nRF52, nRF53, and nRF54 series of wireless multiprotocol devices. Configured via an I2C-compatible two-wire interface, it provides easy access to advanced functions such as ship mode and battery fuel gauging. Additionally, the PMIC furnishes two GPIOs that can be repurposed for time-critical control functions, offering an alternative to serial communication.
Ship mode supports a 35-nA sleep current with multiple wakeup options, including a break-to-wake function that allows a buttonless product to wake from ship mode when an electrical connection is broken. The voltage- and temperature-based fuel gauge runs on the host microprocessor, providing accurate battery level measurements and ensuring full access to the battery’s energy.
Samples of the nPM2100 are now available in a 1.9×1.9-mm WLCSP, with additional variants to be offered in 4×4-mm QFN packages. Volume production is expected in the first half of 2025.
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