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nPM2100 Power Management IC

Primary-cell PMIC with ultra-efficient boost regulator and fuel gauge

The nPM2100 is a Power Management IC specifically engineered for primary-cell battery applications, addressing the unique power management requirements of non-rechargeable battery-powered products. It supports Alkaline AA/AAA/LRxx cells (up to two in series), 3 V LiMnO₂ coin cells (CR2032 and similar), single- or dual-cell silver oxide and zinc-air coin-cell batteries, or any primary battery within 0.7–3.4 V input range. 

This is accomplished though an ultra-efficient boost regulator with auto pass-through mode which allows batteries to be used all the way down to their functional endpoint. The on-chip LDO enables the use of a second voltage rail. 
The nPM2100 includes an algorithm-based battery fuel gauge and a rich set of system management features including a hardware watchdog, hard reset, failed-boot recovery, break-to-wake, ship and hibernate mode. 

nPM2100 Datasheet [PDF | HTML] 

 

Battery management

  • Supported battery types
    • Alkaline AA/AAA/LRxx cells (up to two in series)
    • 3 V LiMnO₂ coin cells (CR2032 and similar)
    • Single- or dual-cell silver oxide and zinc-air coin-cell batteries
    • Any primary battery within 0.7–3.4 V input range
    • Fuel gauge
    • State of charge

Voltage regulators

  • Boost regulator
    • Output current: 150 mA
    • Output voltage: 1.8 – 3.3 V
      • 50 mV steps
    • Automatic switching between higher power, low power and ultra-low power modes, or pass-through mode
    • Quiescent current: 150 nA
    • Efficiency: up to 95% at 50 mA, 90.5% at 10 µA
  • LDOs / load switches
    • Output current: 50 mA
    • Output voltage: 0.8 – 3.0 V (LDO)
    • 50 mV steps (LDO)

System management

  • Hard reset
  • Watchdog timer
  • Failed-boot recovery
  • Ship mode: 35 nA
  • Hibernate mode: 175 nA
  • Two GPIOs
  • I²C compatible TWI
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Key features

  • Supported batteries: alkaline AA/AAA/LRxx (1S and 2S), 3 V LiMnO₂ coin cells, and other primary batteries 

  • Fuel gauge 

  • Ultra-efficient boost regulator 

  • LDO / load switch 

  • Ship & hibernate mode 

  • Break-to-wake

  • Hard reset 

  • Watchdog timer 

  • Failed-boot recovery 

  • Two GPIOs 

  • TWI configuration interface 

Evaluation kits

nPM2100 EK

The nPM2100 Evaluation Kit (EK) is a tool for evaluating the nPM2100 PMIC and evaluate its features for your application. 
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Software & tools

Nordic’s PMIC software and tools are designed to simplify power management development across Nordic and non‑Nordic MCUs. With ready‑to‑use drivers for Zephyr and bare-metal environments, a production‑proven fuel‑gauge algorithm, and powerful evaluation tools like nPM PowerUP, developers can evaluate, configure, and integrate PMICs quickly — moving fast from first prototype to final product.

The Software & Tools landing page brings together all software, documentation, downloads, and development resources needed to support PMIC‑based designs.

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Download reference layout

for the nPM2100 PMIC

Selected version
0.2 QEAA layout and BOM resources

Changelog:

0.2 QEAA layout and BOM resources

Reference layout for the nPM2100 in QFN16 package

nPM2100 + nRF54L15 design example


The nPM2100 + nRF54L15 Design Example has been developed by Seeed Studio in collaboration with Nordic Semiconductor. 

This minimal board design provides the essential circuitry and layout for basic operation and integration of the Bluetooth Low Energy SoC and Power Management IC. It serves as a foundational template, illustrating the critical connections and dependencies between components. Developers can use this design as a starting point, adding custom features and enhancements as needed for their specific applications.

Key power and RF performances, including conducted and radiated emissions levels have been validated for this design. 

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The design is based on: