Efficient PMIC extends primary-cell battery life for embedded IoT designs

May 7, 2026

The nPM2100 power management IC (PMIC) from Nordic Semiconductor features a toolbox of power-saving functions to maximize battery runtime in primary-cell battery-powered designs.

Nordic Semiconductor has introduced the nPM2100 PMIC to meet the challenges of limited battery life in wireless sensors and peripherals. The PMIC supports input voltages ranging from 0.7V to 3.4V, enabling operation from single or dual AA and AAA batteries, silver-oxide cells, or 3V CR2032 coin cells.

 

An integrated boost converter operating with 150nA quiescent current delivers up to 95% efficiency, ensuring longer life for power-limited products requiring higher operating voltages than provided by the battery.

 

Many IoT applications spend long durations in sleep: the nPM2100 includes a 175nA hibernate mode with wake-up functions that can extend battery-life by up to three times. To extend shelf life, 35nA ship mode disconnects the battery and eliminates the need for mechanical pull tabs during the shipping process.

 

The nPM2100 uses precise voltage and temperature-based fuel gauging on the host microprocessor, instead of solely standard voltage-based estimation, reducing the likelihood of premature replacement or unexpected shutdowns.

 

Software support is available for nRF52, nRF53, and nRF54 series wireless multiprotocol systems-on-chip (SoC) via the nRF Connect SDK, though the nPM2100 PMIC also interfaces with non-Nordic host processors.

Features

  • LDO regulator output range: 0.8V to 3.0V
  • Supply voltage range: 0.7 to 3.4V
  • Boost converter output range: 1.8 to 3.3V
  • WLCSP and QFN16 package options
  • 150mA maximum boost output current

Applications

  • Computer peripherals
  • Human interface devices
  • Remote controls
  • Smart home sensors
  • Bluetooth asset trackers
  • Fitness accessories
  • Personal medical devices
FTMIssue52026_NordicSemiconductor_nPM2100

Evaluation Board

Part Number: nPM2100-EK

The nPM2100-EK allows for easy, code-free configuration of the nPM2100 PMIC through the nPM PowerUP application. The kit includes add-on boards and holders for AA, AAA, LR44, and CR2032 batteries for evaluation of different battery combinations. Settings can be configured via a graphical user interface (GUI) and exported as code for implementation in firmware. The board provides access to all PMIC functions including fuel gauge and power-saving modes.

 

Key features:

  • USB connectivity
  • Header access to all logic signals and power rails
  • Dedicated current measurement points
FTMIssue52026_NordicSemiconductor_nPM2100-EK

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