Multi-Channel (3) PMIC for Automotive Applications: 3 LVBUCK, Fit for ASIL B Safety Level

  • This page contains information on a preproduction product. Specifications and information herein are subject to change without notice. For additional information contact support or your sales representative.

Roll over image to zoom in

Block Diagram

Multi-Channel (3) PMIC for Automotive Applications: 3 LVBUCK, Fit for ASIL B Safety Level

PF5123 Functional Block Diagram


Key Features

  • Three LVBUCK converters up to 3.5 A
  • 28-pin 4.5 x 4.5 FC-QFN package
  • MCU supported for general PMIC, PoL
  • I2C interface and input control

System Features

  • One-time programmable (OTP) memory for flexible device configuration
  • High speed I2C interface (3.4 MHz)
  • PGOOD monitoring circuits
  • External clock synchronization
  • Frequency spread spectrum
  • Multi PMIC synchronization bus
  • Output Current (A) 3.5
  • 3 buck regulators
  • No LDO applicable

Monitoring Circuits to Fit ASIL B Safety Level

  • Independent circuits to fit ASIL B safety level
  • Voltage monitoring with programmable fault protection
  • Watchdog simple window
  • I2C CRC and write protection mechanism
  • Analog built-in self-test (ABIST)


  • Supplies, sequencing and specific functions can be programmed by one time programmable (OTP) memory
  • During development phase, customized OTP part can be programmed using the evaluation board
  • Custom OTP can be provided for production. Please contact your NXP sales channel (NXP or your distributor)
  • Custom OTP can be created using the GUI tool


Quick reference to our documentation types.

2 documents


Quick reference to our software types.

1 software file

Note: For better experience, software downloads are recommended on desktop.

Engineering Services

1 engineering service

To find additional partner offerings that support this product, visit our Partner Marketplace.


What do you need help with?