nPM2100 Power Management IC

The nPM2100 is a Power Management IC specifically engineered for primary-cell battery applications, addressing the unique power management requirements of non-rechargeable battery-powered products. It supports Alkaline AA/AAA/LRxx cells (up to two in series), 3 V LiMnO₂ coin cells (CR2032 and similar), single- or dual-cell silver oxide and zinc-air coin-cell batteries, or any primary battery within 0.7–3.4 V input range. 

This is accomplished though an ultra-efficient boost regulator with auto pass-through mode which allows batteries to be used all the way down to their functional endpoint. The on-chip LDO enables the use of a second voltage rail. 
The nPM2100 includes an algorithm-based battery fuel gauge and a rich set of system management features including a hardware watchdog, hard reset, failed-boot recovery, break-to-wake, ship and hibernate mode. 

Battery management

• Supported battery types
  • Alkaline AA/AAA/LRxx cells (up to two in series)
  • 3 V LiMnO₂ coin cells (CR2032 and similar)
  • Single- or dual-cell silver oxide and zinc-air coin-cell batteries
  • Any primary battery within 0.7–3.4 V input range
  • Fuel gauge
  • State of charge

Voltage regulators

• Boost regulator
  • Output current: 150 mA
  • Output voltage: 1.8 – 3.3 V
    • 50 mV steps
  • Automatic switching between higher power, low power and ultra-low power modes, or pass-through mode
  • Quiescent current: 150 nA
  • Efficiency: up to 95% at 50 mA, 90.5% at 10 µA
• LDOs / load switches
  • Output current: 50 mA
  • Output voltage: 0.8 – 3.0 V (LDO)
  • 50 mV steps (LDO)

System management

• Hard reset
• Watchdog timer
• Failed-boot recovery
• Ship mode: 35 nA
• Hibernate mode: 175 nA
• Two GPIOs
• I²C compatible TWI