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nPM1300 电源管理IC

集成度优异、搭载专属系统管理功能的电源管理芯片(PMIC)

nPM1300 是一款高集成度多功能电源管理芯片(PMIC),单芯片集成电池充电器、算法型电量计、两路高效率降压稳压器、两路低压差稳压器 / 负载开关以及全套系统管理功能。nPM1300 可缩减 PCB 占用面积与物料清单,替代多颗分立元器件;同时搭载全兼容 I²C 的双线串行接口(TWI),大幅提升设计灵活度

器件内置基于算法的电池电量计,可上报剩余电量与电池健康状态,搭配高精度库仑计,超低功耗运行,无需外接额外器件。芯片配备丰富的系统管理功能:硬件看门狗、掉电预警、硬件复位监控电路、启动故障恢复、出厂休眠模式与深度休眠模式。

nPM1300 数据手册 [PDF | HTML]


电池管理

  • 线性电池充电器 
    • 适配电池类型:锂离子电池、锂聚合物电池、磷酸铁锂电池
    • 充电电流:32~800 毫安
    • 充电截止电压:3.5~4.45 伏 
      • 电压步进 50 毫伏可调
    • 电池输入电压:2.3~4.45 伏
    • 动态电源通路
    • 符合 JEITA 充电标准
    • 支持电池组 NTC 热敏电阻接入,用于电池保护与电量检测
  • 带电池健康检测功能的电量计 
    • 剩余电量、电池健康度、充放电循环次数监测
  • 系统稳压电源 
    • 兼容 USB C 接口,可选 100mA、500mA、1500mA 三档限流
    • 输入电压:4.0~5.5 伏
    • 22 伏过压保护
    • 非稳压系统电源轨 
      • 输出电压:3~5.5 伏
      • 输出电流:电池供电最大 1 安,USB 供电最大 1.5 安

电压稳压模块

  • 两路降压稳压器 
    • 输出电流:200 毫安
    • 输出电压:1.0~3.3 伏 
      • 电压步进 100 毫伏可调
    • 迟滞 / 脉冲调制(PWM)模式自动切换,亦可强制固定为 PWM 模式
    • 电源转换效率最高 93%
  • 两路低压差稳压器 / 负载开关 
    • 输出电流:LDO 50 毫安 / 负载开关 100 毫安
    • 输出电压:1.0~3.3 伏 
      • LDO 电压步进 100 毫伏可调

系统管理

  • 硬件复位(单按键 / 双按键可选)
  • 看门狗定时器
  • 启动异常恢复
  • 电源掉电告警
  • 运输模式:370 纳安
  • 休眠模式:500 纳安
  • 五路通用输入输出引脚(GPIO)
  • 三路 5 毫安 LED 驱动
  • 兼容 I²C 协议的双线接口(TWI)
Key features
  • 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 

Block diagram

nPM_1300_Block_Diagram_landscape.png

Battery fuel gauge for IoT devices

Accurate fuel gauging is essential for any battery‑powered device, giving users clear and reliable insight into how much energy is left and helping avoid unexpected shutdowns.

Nordic’s fuel gauging provides accurate state of charge information for all supported battery types. Battery state of health is also supported for rechargeable batteries - tracking actual capacity and aging over time to understand how the battery performs throughout its lifetime. This deeper insight helps devices stay reliable for longer and makes rechargeable battery replacement more predictable.

By combining high accuracy with ultra‑low power operation - including zero power consumption in sleep - and low system cost, the Nordic algorithm-based fuel gauge solution delivers accurate battery information without extra components, licensing fees, or impact on battery life.

The Fuel Gauge page brings together all documentation, development resources, support & training related to fuel gauging and battery health.

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