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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.

Please contact Nordic sales to participate in the early sampling program.

Download nPM1304 product brief [PDF]

QFN325x5mm

WLCSP3.1x2.4mm

QFN325x5mm
WLCSP3.1x2.4mm

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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

Watch and learn

The nPM1304 complements the award-winning nPM1300 PMIC to support small size batteries

Block diagram

Fuel gauging

Ultra-low power high precision fuel gauging for small battery products

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.

Webinar

Discover nPM1300 - The Future of Embedded Power Management

The nPM1304 complements the award-winning nPM1300 PMIC to support small size batteries. Get to know power management, and the versatile and feature-rich nPM1300. Grab a coffee and enjoy!

Watch the webinar now

Compatible SoCs

nRF54L15 SoC

Ultra-low-power wireless SoC supporting Bluetooth LE, Channel Sounding, Bluetooth Mesh, Zigbee, Thread, Matter, Amazon Sidewalk and 2.4 GHz proprietary protocols

128 MHz Arm Cortex-M33
1.5 MB NVM, 256 KB RAM

nRF54H20 WLCSP bluetooth le/bluetooth low energy bt module Matter protocol Matter development Developing for Matter

nRF54H20 wireless SoC

Sampling now: Revolutionary multiprotocol and multiprocessor SoC with world-leading processing power and efficiency, ample memory, record-breaking radio, and state-of-the-art security.

nRF5340 SoC

Dual-core Bluetooth 5.4 SoC supporting Bluetooth Low Energy, Bluetooth mesh, NFC, Thread and Zigbee

128 MHz Arm Cortex-M33 CPU with
1 MB Flash + 512 KB RAM
64 MHz Arm Cortex-M33 CPU with
256 KB Flash + 64 KB RAM
Bluetooth Low Energy
Bluetooth Direction Finding
Bluetooth mesh
Thread, Zigbee
ANT
NFC
Advanced security
USB, QSPI, HS-SPI
105 °C extended operating temperature
1.7-5.5 V supply voltage range