The nPM1304 PMIC complements Nordic’s award-winning nPM1300 PMIC with a highly integrated, ultra-low power solution and precision fuel gauging for smart rings, body sensors, and other small size battery applications, supporting charging currents down to 4 mA.
The nPM1304 PMIC brings unique system management features and the industry´s first ultra-low power precision fuel gauging for small battery products. Nordic’s unique algorithm-based fuel gauge method uses voltage, current, and temperature monitoring together with a mathematical battery model to estimate battery state of charge. This method yields an accuracy comparable to that of dedicated fuel gauge devices such as coulomb counters, but without the additional power consumption and inherent error accumulation.
The nPM1304 is optimized for maximum efficiency and compact size, and is configurable through an I2C-compatible Two Wire Interface (TWI). This interface enables easy access to configure a range of advanced system management functions, including a two-button hard reset, battery fuel gauging, system-level watchdog, power loss warning, and recovery from failed boot. These functions are typically implemented as discrete components in embedded designs, but the nPM1304 integrates them into a single, compact package, simplifying system design and reducing the number of required components.
The nPM1304 manages the power supply for Nordic’s nRF52, nRF53 and the nRF54L and nRF54H Series wireless multiprotocol Systems-on-Chip (SoC), in addition to any other microcontrollers (MCUs), optimizing for maximum efficiency and compact size.
To get the information from this page in a print friendly one-page format, download the nPM1304 product brief.
nRF Connect SDK is a common software development kit for Bluetooth Low Energy, Wi-Fi, cellular IoT, Bluetooth mesh, Thread, Zigbee and Matter. It supports all our nRF52, nRF53, nRF54L, nRF70 and nRF91 Series wireless devices.
