PF9453 - NXP

PF9453 Power management

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 WLC.

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, 0.8 V to 3.3 V with 25 mV step, 250 mA, voltage selection through SD_VSEL pin
  – LDO2 (QFN only), 0.5 V to 1.95 V with 25 mV step, 200 mA
• One 400 mA load switch with a built-in .