nPM1100 Thumbnail


If you're reading this you are one of the few people lucky enough to receive a nPM1100 Thumnail board from one of our representatives. The nPM1100 Thumbnail is a giveaway board for showing off the nPM1100's capabilities as a small, highly efficient PMIC that requires very little board space to be fully operational. The nPM1100 Thumbnail features a fully functional nPM1100 PMIC and the passive components required to make it operate, with solder pads for select pins on the nPM1100 on a 100 mil grid. It can thus be used as a daughterboard by soldering it to a prototyping board. It can be used for powering applications with a regulated 3.0 V supply and charging lithium-ion and lithium polymer batteries via USB. For instructions see the user guide below. To read more about the nPM1100 download the product brief, or visit the nPM1100 product page

Download PDF  Download nPM1100 product brief [PDF]

Key features
  • Inductor choices optimized for size
  • Requires no software to operate
  • 3.0 V regulated output
  • USB input
  • Battery charging and power delivery
  • Solder pads to essential pins on nPM1100
  • Solder pads on a 100 mil grid for easily integrating with prototyping boards

How to use it



What to connect to


USB Data-
USB Data+

Positive and negative data lines of USB for port detection.
If unused connect D_N to ground for static 100 mA current limit.


USB power input

Connect to 5 V USB power for charging.



Positive terminal on battery. 


Battery temperature

Battery thermistor, if unused connect to ground via 10 kΩ resistor.



System ground.


Charge and error indication

Connect to indicator LEDs, optional, if unused leave open.


Regulated output 

Outputs 3.0 V regulated.


System voltage

Outputs battery voltage or USB voltage.


A picture of a very small IC surronded by small capacitors and an inductor, with a matchstick head for scale

Related products

nPM1100 PMIC

Ultra-small form-factor Power Management IC (PMIC) for charging batteries and power delivery.

The nPM1100 is a dedicated power management IC (PMIC) with dual-mode configurable buck regulator and integrated battery charger. It is designed as a complementary component to Nordic’s nRF52® Series and nRF53® Series System-on-Chips (SoCs) to ensure reliable power delivery and stable operation, whilst maximizing battery life through high efficiency and low quiescent currents. It can also be used as a generic PMIC device for any other suitable application. Its extremely compact form factor makes it ideal for advanced wearables, connected medical devices, and other size constrained applications. PCB area usage can be as low as 23 mm2.

nPM1100 EK

The nPM1100 Evaluation Kit (EK) is a tool for evaluating the nPM1100 PMIC and evaluate its features for your application. The kit features switches for all selectable settings, buttons to enter and exit ship mode and connectors for batteries, USB and headers for all pins on the PMIC.