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nPM1304 is a highly integrated Power Management IC (PMIC) for rechargeable applications. It is optimized for small batteries and supports charging current down to 4 mA. It is design compatible with nRF52, nRF53 or nRF54 Series System on Chips (SoC) for creating low-power wireless solutions.

nPM1304 integrates several power and system management features that significantly reduce cost and footprint. Power is managed through flexible power regulation and a linear-mode lithium-ion (Li-ion), lithium-polymer (Li-poly), and lithium iron phosphate (LiFePO4) battery charger in a compact 3.1x2.4 mm CSP or 5x5 mm QFN32 package. A minimum of five passive components are required.

nPM1304 supports charging up to 100 mA and delivers adjustable regulated voltage to external components from two configurable, dual mode 200 mA BUCK regulators, and two dual purpose 50 mA LDO/100 mA load switches. An unregulated power rail delivers up to 100 mA (including BUCK and LDO current consumption) when powered from battery, or up to 1.5 A when powered from a USB port configured as DCP. The maximum total current on VSYS is 1.5 A.

The PMIC provides host access to battery temperature, voltage, and current, which are utilized by a fuel gauge algorithm in the nRF Connect Software Development Kit. The fuel gauge provides the application with a battery state-of-charge estimate comparable to Coulomb counters but at a significantly lower power consumption.

Nanoamp Ship mode extends battery life during shipping, storage, or device power off. In active mode, low IQ BUCK regulators use auto-controlled Hysteretic mode for high efficiency down to 1 µA load currents.

Key features
  • 4 mA to 100 mA battery charger
  • Two 200 mA BUCK DC/DC regulators
  • Two 100 mA Load switches or 50 mA LDOs
  • Fuel gauge
  • Hard reset from up to two buttons
  • System-level watchdog and failed boot recovery
  • Intelligent power-loss warning
  • Five GPIO pins
  • Three LED drivers
  • USB-C compatible
  • Controlled via an I2C compatible TWI interface
  • Multiple package options

    • 3.1x2.4 mm CSP

    • 5x5 mm QFN32

Page-1 Nordic Middle Grey nPM1304 nPM1304 Nordic Blueslate 2x BUCK 200 mA 2x BUCK 200 mA Nordic Blueslate.7 CHARGER 4 mA –100 mA CHARGER 4 mA –100 mA Nordic Blueslate.8 Fuel Gauge Fuel Gauge Nordic Blueslate.11 5 GPIO pins 5 GPIO pins Nordic Blueslate.12 SYSTEM Reset – Watchdog – ADC SYSTEM Reset – Watchdog – ADC Nordic Blueslate.15 2x LOADSW/LDO 100 mA/50 mA 2x LOADSW/LDO 100 mA/50 mA Nordic Blueslate.17 3 LEDs 3 LEDs Nordic Blueslate.18 USB-C USB-C Nordic Blueslate.19 TWI TWI
Features:
  • 100 mA linear battery charger
    • Linear charger for lithium-ion, lithium-polymer, and lithium iron phosphate batteries
    • Configurable charge current from 4 mA to 100 mA
    • Configurable charging termination voltage from 3.6 V to 4.65 V
    • Configurable thermal regulation
    • JEITA compliant
    • Dynamic power-path management
  • Input current limiter
    • USB Type-C compliant
    • 4.0 V to 5.5 V operational input voltage range
    • 22 V tolerant
  • Two 200 mA buck regulators
    • Automatic transition between Hysteretic and pulse width modulation (PWM) modes
    • Forced PWM mode for low-ripple operation
    • Pin-selectable output voltage
  • Ultra-low power, high accuracy fuel gauge tailored for embedded IoT applications
    • Battery voltage, current and temperature monitored by nPM1304
    • Nordic Fuel Gauge algorithm running on host System-on-Chip/MCU
  • Two 50 mA LDO/100 mA load switches
  • I2C compatible TWI interface for control and monitoring
  • 10-bit ADC for system monitoring
    • Measures VBUS voltage, battery voltage, current, and die temperature
  • Three pre-configured and programmable 5 mA low-side LED drivers
  • Configurable timer
    • Boot monitor
    • Watchdog timer with selectable reset or power cycling
    • Wake-up timer
    • General purpose timer
  • Power-fail warning (POF)
  • Configurable hard reset
  • General purpose I/Os that can control BUCKs, load switches, interrupt output, reset, power fail warning, or as a general purpose I/O
  • Seamless integration and code free configuration with the nPM1304 Evaluation Kit and nPM PowerUp desktop app
  • Package options available:
    • 3.1x2.4 mm CSP package
    • 5.0x5.0 mm QFN package
Applications:
  • Wearables
    • Health/fitness sensor and monitoring devices
    • Smart rings
    • Smart glasses
  • Sports performance trackers