MC34PF1550A4EP

PF1550 Power management integrated circuit (PMIC) for low power application processors Rev. 7 29 September 2021 Product data sheet 1 General description 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. 1.1 Features and benefits This section summarizes the PF1550 features: 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 A 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 A in Low-power mode Programmable output voltage Soft start and ramp Current limit protectionNXP Semiconductors PF1550 Power management integrated circuit (PMIC) for low power application processors 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 m 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 2 I C 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 2 I C interface User programmable Standby, Sleep/Low-power, and Off (REGS DISABLE) modes Ambient temperature range 40 C to 105 C 1.2 Applications Smart mobile/wearable devices Low-power IoT applications Wireless game controllers Embedded monitoring systems Home automation POS E-Read PF1550 All information provided in this document is subject to legal disclaimers. NXP B.V. 2021. All rights reserved. Product data sheet Rev. 7 29 September 2021 2 / 150