Efficient PMIC extends primary-cell battery life for embedded IoT designs
The nPM2100 power management IC (PMIC) from Nordic Semiconductor features a toolbox of power-saving functions to maximize battery runtime in primary-cell battery-powered designs.
Nordic Semiconductor has introduced the nPM2100 PMIC to meet the challenges of limited battery life in wireless sensors and peripherals. The PMIC supports input voltages ranging from 0.7V to 3.4V, enabling operation from single or dual AA and AAA batteries, silver-oxide cells, or 3V CR2032 coin cells.
An integrated boost converter operating with 150nA quiescent current delivers up to 95% efficiency, ensuring longer life for power-limited products requiring higher operating voltages than provided by the battery.
Many IoT applications spend long durations in sleep: the nPM2100 includes a 175nA hibernate mode with wake-up functions that can extend battery-life by up to three times. To extend shelf life, 35nA ship mode disconnects the battery and eliminates the need for mechanical pull tabs during the shipping process.
The nPM2100 uses precise voltage and temperature-based fuel gauging on the host microprocessor, instead of solely standard voltage-based estimation, reducing the likelihood of premature replacement or unexpected shutdowns.
Software support is available for nRF52, nRF53, and nRF54 series wireless multiprotocol systems-on-chip (SoC) via the nRF Connect SDK, though the nPM2100 PMIC also interfaces with non-Nordic host processors.