NXP MC32PF1550A8EPR2

The PF1550 is a power management integrated circuit (PMIC) designed specifically for use with i.MX processors on low-power portable, smart wearable and Internet-of-Things (IoT) applications. It is also capable of providing full power solution to i.MX 7ULP, i.MX 6SL, 6UL, 6ULL, and 6SX processors. With three high-efficiency buck converter, three linear regulators, RTC supply, and battery linear charger, the PF1550 can provide power for a complete battery-powered system, including application processors, memory, and system peripherals.

• Input voltage range to PMIC VBUSIN pin via USB bus or AC adapter: 4.1 V to 6.0 V
• Buck converters:
  • SW1, 1.0 A; 0.6 V to 1.3875 V in 12.5 mV steps, or 1.1 V to 3.3 V in variable steps
  • SW2, 1.0 A; 0.6 V to 1.3875 V in 12.5 mV steps, or 1.1 V to 3.3 V in variable steps
  • SW3, 1.0 A; 1.8 V to 3.3 V in 100 mV steps
  • Soft start
  • Quiescent current 1.0 μA in ULP mode with light load
  • Peak efficiency >90 %
  • Dynamic voltage scaling on SW1 and SW2
  • Modes: forced PWM quasi-fixed frequency mode, adaptive variable-frequency mode
  • Programmable output voltage, current limit, and soft start
• LDO regulators
  • LDO1, 0.75 V to 1.5 V/1.8 to 3.3 V, 300 mA with load switch mode
  • LDO2, 1.8 V to 3.3 V, 400 mA
  • LDO3, 0.75 V to 1.5 V/1.8 V to 3.3 V, 300 mA with load switch mode
  • Quiescent current <1.5 μA in Low-power mode
  • Programmable output voltage
  • Soft start and ramp
  • Current limit protection
• Battery charger
  • Supports single-cell Lithium Ion/Lithium Polymer batteries
  • Linear charging (10 mA to 1500 mA input limit)
  • Up to 6.5 V input operating range
  • VSYS regulator can withstand transient and DC inputs from 0 V up to +22 V
  • Programmable charge voltage 3.5 V to 4.44 V
  • Programmable charge current (100 mA to 1000 mA)
  • Programmable charge termination current (5.0 mA to 50 mA)
  • Integrated 50 mΩ battery isolation MOSFET for operation with no/low battery
  • Battery supplement mode
  • Battery discharge overcurrent protection, up to 3.0 A
  • USB_PHY low dropout linear regulator
  • Programmable LED driver (status indicator)
  • JEITA-compliant battery temp sensing and charger control
  • Key charging parameters can be configured and permanently stored in OTP
  • I2C Control Interface permitting processor control and event detection
• LDO/switch supply
  • RTC supply VSNVS 3.0 V, 2.0 mA
  • Battery backed memory including coin cell charger
• DDR memory reference voltage, VREFDDR, 0.5 V to 0.9 V, 10 mA
• OTP (One time programmable) memory for device configuration
  • User programmable start-up sequence, timing, soft-start, and power-down sequence
  • Programmable regulator output voltages and charger parameters
• I2C interface
• User programmable Standby, Sleep/Low-power, and Off (REGS_DISABLE) modes
• Ambient temperature range -40 ℃ to 105 ℃

• Smart mobile/wearable devices
• Low-power IoT applications
• Wireless game controllers
• Embedded monitoring systems
• Home automation
• POS
• E-Read