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nPM1304 Power Management IC

Highly integrated Power Management IC (PMIC) with support for small size battery product

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.
 

PDF IconDownload nPM1304 product brief [PDF]

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Key features
  • 4 - 100 mA battery charger
  • Two 200 mA buck DCDC regulators
  • Two 100 mA Load switches / 50 mA LDOs
  • 370 nA Ship Mode & 500 nA Hibernate mode
  • Hard reset for one or two buttons 
  • Fuel gauge
  • System-level watchdog and failed-boot recovery
  • Intelligent power loss warning
  • Five GPIOs 
  • Three LED drivers
  • Controlled via I2C compatible TWI
  • USB-C compatible 
Documentation
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Differentiated algorithm-based battery fuel gauge solution including battery health

Accurate fuel gauging is essential for any battery‑powered device, giving users clear and reliable insight into how much energy is left and helping avoid unexpected shutdowns.

Nordic’s fuel gauging provides accurate state of charge information for all supported battery types. Battery state of health is also supported for rechargeable batteries - tracking actual capacity and aging over time to understand how the battery performs throughout its lifetime. This deeper insight helps devices stay reliable for longer and makes rechargeable battery replacement more predictable.

By combining high accuracy with ultra‑low power operation - including zero power consumption in sleep - and low system cost, the Nordic algorithm-based fuel gauge solution delivers accurate battery information without extra components, licensing fees, or impact on battery life.

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