Nordic Semiconductor nPM1100 Power Management ICs

Nordic Semiconductor nPM1100 Power Management ICs combine a PMIC, dual-mode configurable buck regulator, and integrated battery charger. The nPM1100 is a natural companion to Nordic’s nRF52 Series and nRF53 Series System-on-Chips (SoCs’) but is also well suited for any product with a small rechargeable battery. This design ensures reliable power delivery and stable operation while maximizing battery life through high efficiency and low quiescent currents.

The Nordic nPM1100 Power Management ICs provide an extremely compact form factor that is ideal for advanced wearables, connected medical devices, and other size-constrained applications. The PCB area usage can be as low as 23mm2.

The integrated battery charger is designed to charge lithium-ion and lithium polymer batteries to a termination voltage selectable to 4.1V or 4.2V supporting cell chemistries with a nominal voltage of 3.6V and 3.7V, respectively. The maximum charge current is resistor selectable from 20mA up to 400mA.

The nPM1100 PMIC includes a USB compatible system regulator that features USB port detection for SDP, CDP, and DCP USB host-type ports supporting USB current limits of 100mA and 500mA and a USB supply voltage ranging from 4.1V to 6.6V.

The nPM1100 PMIC requires no software to operate and is compatible with all components that operate within the output voltages and power the PMIC can deliver. The device charges lithium-ion and lithium-polymer batteries at 4.1V or 4.2V during operation. The PMIC itself utilizes either USB or other DC power (4.1V to 6.6V) or a connected battery (2.3V to 4.35V).


  • Extremely compact, 2.075mm x 2.075mm WLCSP package
  • Complements all nRF52 and nRF53 Series SoCs
  • Dual-mode buck regulator
    • Hysteretic and PWM mode
    • Selectable output voltage (1.8V, 2.1V, 2.7V, 3.0V)
    • 150mA current limit
  • Battery charger for Lithium-Ion/Lithium Polymer rechargeable batteries
    • Automatic charging mode (trickle, constant current, constant voltage)
    • Battery thermal protection
    • Selectable termination voltage (4.1V or 4.2V)
  • Low quiescent current, 800nA typical, 470nA in ship mode (disables power output)
  • USB compatible input regulator
    • Current limit of 100mA or 500mA
    • 4.1V min to 6.6V max input voltage
    • 20V overvoltage protection
    • 3.5V to 5.0V system voltage output
    • USB port detection for SDP, CDP, and DCP
  • Drivers for charge and error indicator LEDs


  • Wearables
  • Computer peripherals
  • Personal medical devices
  • Smart Home sensors and controllers
  • Remote controls and gaming controllers


Block Diagram

Block Diagram - Nordic Semiconductor nPM1100 Power Management ICs
Published: 2021-05-04 | Updated: 2023-05-10