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nPM1300 Power Management IC

Highly integrated PMIC with unique system management features.

The nPM1300 is a highly integrated multifunction Power Management IC (PMIC) that includes battery charger, an algorithm-based fuel gauge, two ultra-efficient buck regulators, two LDOs / load switches, and comprehensive system management functions into a single device. The nPM1300 reduces both board space and bill of materials while replacing multiple discrete components while enabling greater design flexibility through a fully I²C-compatible TWI interface.

The nPM1300 includes an algorithm-based battery fuel gauge solution with state of charge and state of health reporting. It comes with coulomb counter accuracy, ultra-low power operation and does not require any extra components. A rich set of system management features including a hardware watchdog, power loss warning, hard reset supervisory circuit, failed boot recovery, ship and hibernate modes.

nPM1300 Datasheet [PDF | HTML]

Battery management

Linear battery charger
- Supported battery types: Li-ion, Li-poly, and LiFePO₄
- Charge current: 32 - 800 mA
- Charging termination voltage: 3.5 – 4.45 V
  - 50 mV termination voltage steps
- Battery input voltage: 2.3 - 4.45 V
- Dynamic power-path
- JEITA compliant
- Battery pack NTC input for battery protection and fuel gauging
Fuel gauge including battery health
- State of charge, state of health and cycle tracking
System regulator
- USB type-C compliant with 100 mA, 500 mA, and 1500 mA current limit
- Input voltage: 4.0 – 5.5 V
- 22V overvoltage protection
- Unregulated system rail
  - Output voltage: 3 – 5.5 V
  - Output current: 1A (from battery), 1.5A (from USB)

Voltage regulators

Two buck regulators
- Output current: 200 mA
- Output voltage: 1.0 – 3.3 V
  - 100 mV steps
- Automatic hysteretic and PWM mode switching, or forced PWM mode
- Power conversion efficiency up to 93%
Two LDOs / load switches
- Output current: 50 mA (LDO) / 100 mA (load switch)
- Output voltage: 1.0 – 3.3 V
  - 100 mV steps (LDO)