
Read more about Power Management
nordicsemi.com/products/power-management
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.
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.
Please contact Nordic sales to participate in the early sampling program.
The nPM1304 complements the award-winning nPM1300 PMIC to support small size batteries
The nPM1304 PMIC brings unique system management features and accurate fuel gauging for low power and size constrained applications. Nordic’s 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.
A dedicated fuel gauge device can use as much as 50µA when the product is active and 7µA in sleep. For a product with e.g. a 200µA average current consumption, the traditional fuel gauging represents an unsustainable share of the total energy budget. The nPM1304 using 8µA active and zero current in sleep provides accurate state-of-charge estimates with no noticeable shortening of battery life.
The estimation algorithm can be run on Nordic’s low power wireless connectivity Systems-on-Chip (SoCs) in addition to other microcontrollers (MCUs), and does not require additional hardware beyond this.
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