Introducing the industry’s most compact power management solution

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.

The integrated linear battery charger is designed to charge lithium-ion and lithium-polymer batteries on a termination voltage selectable to 4.1 or 4.2 V supporting cell chemistries with a nominal voltage of 3.6 and 3.7 V, respectively. It includes battery thermal protection and automatic selection of three charging modes: automatic trickle, constant current and constant voltage. The maximum charge current is resistor selectable from 20 mA up to 400 mA. The charger also features a discharge current limitation and is JEITA compliant. The PMIC is USB compatible and allows for charging batteries through USB, with automatic port detection.

The highly efficient step-down buck regulator can deliver up to 150 mA of current at a selectable output voltage of 1.8, 2.1, 2.7 or 3.0 V. It features soft startup and automatic transition between hysteretic and PWM modes. It also allows for forced PWM mode to ensure clean power operation. The power conversion efficiency goes up as far as to 92 % while maintaining a small footprint of only 27 mm2, including passive components.

To read more download the nPM1100 product brief.

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.

The EK allows for testing of the nPM1100 PMICs capabilities with existing applications without the need for creating custom hardware. The board supports charging batteries and powering applications with the included headers and battery connectors.

The kit further includes buttons to enter and exit the PMICs ship mode together with DIP-switches for all configuration options such as selecting the charger's termination voltage, regulated output voltage, charge current and VBUS current limit, and fixing the buck regulator mode to PWM mode only for cleaner operation. The kit also includes indicator LEDs for charge and error indication.

There is no programmable logic on the board, hence setup requires no programming for testing with existing hardware applications.

To read more about the nPM1100 PMIC and EK download the nPM1100 product brief.