Five Output Universal PMIC


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.

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  • 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


  • Low power processor, ASIC and FPGA power
  • Industrial control
  • Test equipment
  • POS terminals

Design Tools


Pkg Code Details Quantities Dimensions PDF
QFN32 5x5 OPT4
  • JEDEC Reference: MO-220
  • MSL Pb-Free:
  • MSL SnPb Eutectic:
  • ThetaJA: 36.4
  • Bulk Pack Style: Tray
  • Quantity per Bulk Pack: 490
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: 490
  • Reel Size (Dia. x Width x Pitch): 330x12x8
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole
  • Dimensions: mm
  • Length: 5
  • Width: 5
  • Thickness: 0.9
  • Lead Pitch: 0.05

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
MxL7704-AQB-R QFN32 5x5 OPT4 -40 125 ACTIVE
MxL7704-AQB-T QFN32 5x5 OPT4 -40 125 ACTIVE
MxL7704-XQB-R QFN32 5x5 OPT4 -40 125 ACTIVE
MxL7704-XQB-T QFN32 5x5 OPT4 -40 125 ACTIVE
MxL7704-A-EVB Board ACTIVE
MxL7704-X-EVB Board ACTIVE
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Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
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