MxL7704 - Five Output Universal PMIC

Description

The MxL7704 is a five output Universal PMIC optimized for powering low power FPGAs, DSPs, and microprocessors from 5V inputs. Four synchronous step down buck regulators range from 1.5A system power to 4A core power. A 100mA LDO provides a clean 1.5V to 3.6V power for auxiliary devices. All outputs support ±10% margining and the two highest power outputs support dynamic voltage control to support processors that can utilize this function to save power. Through a 400kHz I2C interface, the customer can monitor an input voltage flag and PGOOD flags for each output. The I2C port can also be used to modify power up and down sequencing options, assign PGOOD outputs to the PGOOD pins, enable outputs and select switching frequency.

High switching frequency and a current mode architecture with internal  compensation enable a very fast transient response to line and load changes without sacrificing stability and keeping board space to a minimum.

Fault protection features include input undervoltage lockout, overcurrent protection, and thermal protection.The MxL7704 is offered in a 5mm x 5mm QFN package.

 

Features

  • Input voltage range: 4.0V to 5.5V
  • 4 Synchronous Buck Regulators
    • Internally compensated current mode
    • 1MHz to 2.1MHz switching frequency
    • Buck 1: 3.0V to 3.6V, 20mV step, 1.5A
    • Buck 2: 1.3V to 1.92V, 20mV step, 1.5A
    • Buck 3: 0.8V to 1.6V, 6.25mV step, 2.5A
    • Buck 4: 0.6V to 1.4V, 6.25mV step, 4A
  • 100mA LDO: 1.5V to 3.6V, 20mV step
  • ±2% maximum total dc output error over line, load and temperature
  • 3.3V/5V 400kHz I2C interface
    • Dynamic voltage scaling
    • Status monitoring by channel
    • Sequencing control
    • Input voltage status register
  • Highly flexible conditional sequencing engine with external input
  • 2 configurable PGOOD outputs
  • Adjustable switching frequency
  • 5mm x 5mm 32-pin QFN package
  • Supported by Excel Configuration Tool
  • MxL7704-X: Xilinx® Zynq® Ultrascale+™ ZU2 / ZU3 Reference Design