nPM1304 Power Management IC
Highly integrated with unique system management features for small size batteries
The nPM1304 is a highly integrated multifunction Power Management IC (PMIC) that includes battery charger, an algorithm-based fuel gauge, two ultra-efficient step-down buck regulators, two LDOs / load switches, and comprehensive system management functions into a single device. It supports battery charge current as low as 4 mA. The nPM1304 reduces the bill of materials by replacing multiple discrete components while enabling greater design flexibility through a fully I²C-compatible TWI interface.
The nPM1304 includes an algorithm-based battery fuel gauge solution with state of charge and state of health reporting. It is highly accurate, consumes ultra-low power 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 mode.A
Battery management
- Linear battery charger
- Supported battery types: Li-ion, Li-poly, and LiFePO₄
- Charge current: 4 - 100 mA
- Charging termination voltage: 3.5 – 4.45 V
- 50 mV termination voltage steps
- Battery input voltage: 2.3 - 4.65 V
- Dynamic power-path
- JEITA compliant
- NTC battery thermal protection
- 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
- 22 V overvoltage protection
- Unregulated system rail
- Output voltage: 3 – 5.5 V
- Output current: 100mA (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
- Supported batteries: Li-ion, Li-Po and LiFePO₄
- USB-C compatible charger
- Overvoltage protection
- Fuel gauge including battery health
- Two buck regulators
- Two LDOs / load switches
- Ship & hibernate modes
- Hard reset
- Watchdog timer
- Failed-boot recovery
- Power loss warning
- Five GPIOs
- Three LED drivers
- TWI configuration interface