Extremely compact single-chip PMIC solution from Nordic Semiconductor at Rutronik

Posted 22 July 2021

Nordic nPM1100 is a dedicated power management IC (PMIC) from Nordic Semiconductor and available at www.rutronik24.com, with configurable dual-mode buck regulator and integrated battery charger.

It is designed as a complementary component to Nordic‘s nRF52 and nRF53 series of system-on-chips (SoCs). It can also be used as a generic PMIC device for any other suitable application. The extremely compact (2.075 x 2.075 mm) WLCSP package is ideal for applications in wearables, connected medical devices, smart home sensors and controls, remote controls and game controllers, and other size constrained applications.

The integrated battery charger is designed to charge lithium-ion and lithium-polymer batteries to a selectable termination voltage of 4.1 or 4.2 V and supports cell chemistries with a nominal voltage of 3.6 or 3.7 V respectively. The unit features thermal battery protection and automatic selection of three charging modes: automatic trickle charge, constant current and constant voltage.

The maximum charging current is selectable via a resistor from 20 mA up to 400 mA. The charger also has a discharge current limiter and is JEITA compliant.

The high-efficiency step-down 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 start and automatic transition between hysteresis and PWM modes. It also enables a forced PWM mode to ensure clean operation.



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