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PF9453 - Power management

General Description

The PF9453 is a single chip Power Management IC (PMIC) specifically designed for the i.MX 91 processor.

It provides power supply solutions for IoT (Internet of Things), smart appliance, and portable applications where size and efficiency are critical.

Key Features

  • Four buck regulators.
  • BUCK1: 0.6 V to 3.775 V, 25 mV step, 2000 mA.
  • BUCK2: 0.6 V to 2.1875 V, 12.5 mV step, 2700 mA (QFN) / 2000 mA (WLCSP).
  • BUCK3: 0.6 V to 3.775 V, 25 mV step, 2000 mA.
  • BUCK4: 0.6 V to 3.775 V, 25 mV step, 2500 mA.
  • Dynamic Voltage Scaling on BUCK2.
  • Monitor fault condition.
  • Linear regulators.
  • LDO_SNVS, always-on, 1.2 V to 3.4 V in QFN or 0.8 V to 3.0 V in WLCSP with 25 mV step, 10 mA.
  • LDO1.

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PF9453 Power management IC for i.MX 91 Rev. 1.0 — 14 August 2024 Objective short data sheet 1 General description The PF9453 is a single chip Power Management IC (PMIC) specifically designed for the i.MX 91 processor. It provides power supply solutions for IoT (Internet of Things), smart appliance, and portable applications where size and efficiency are critical. The device provides four high efficiency step-down regulators, three LDOs in QFN package or two LDOs for WLCSP package, one 400 mA load switch and a 32.768 kHz crystal oscillator driver. One buck regulator supports dynamic voltage scaling (DVS) along with programmable ramping up and down time.