nPM1300 Power Management IC

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. 

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)

System management

• Hard reset (one or two buttons)
• Watchdog timer
• Failed-boot recovery
• Power loss warning
• Ship mode: 370 nA
• Hibernate mode: 500 nA
• Five GPIOs
• Three 5mA LED drivers
• I²C compatible TWI