Five Output Universal PMIC
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Information Five Output Universal PMIC
# of Outputs 4
VIN MIN (V) 4.0
VIN MAX (V) 5.5
VOUT MIN (V) 3.0V / 1.3V / 0.8V / 0.6V
VOUT MAX (V) 3.6V / 1.92V / 1.6V / 1.4V
Set Point Resolution (mV) 20mV / 20mV / 6.25mV / 6.25mV
Controller/ Regulator Regulator
Gate Drive Pull Up/Down 1.5A / 1.5A / 2.5A / 4A
Internal MOSFETs No
IQ (mA) 8
Programmable Frequency Range (MHz) 1 to 2
Control Technology Current Mode PWM
NVM Technology Factory Only
Junction Temp Range (°C) -40 to 125
Package QFN32
Special Features 2 configurable power good outputs; LDO and 2-Input 8-bit ADC, Temp Monitoring, I2C controllable, Supported by Excel configuration tool
PowerArchitect Version# Excel Config Tool
Additional Features
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The MxL7704-B 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 3.3V power for auxiliary devices. All of the outputs support ±10% margining. The two highest power outputs also support dynamic voltage control which saves power in processors that can use this function. You can monitor an input voltage flag and PGOOD flags for each output through a 400kHz I2C interface. The I2C port can enable you to modify the power up and down sequencing options, assign PGOOD outputs to the PGOOD pins, enable outputs, and select switching frequency.

The high switching frequency and 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.

The MxL7704-B built-in one-time programmable (OTP) memory stores key startup configurations. It reduces the external components typically used to set output voltage and sequence of regulators. Regulator parameters are adjustable through high-speed I2C after the start up which offers flexibility for different system states.

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

  • Input voltage range: 4.0V to 5.5V
  • Four 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 3.3V
  • ±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

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

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets MxL7704-B Five Output Universal PMIC R02 September 2023 1.9 MB
Product Flyers Power Management & Interface Products for Cable, Satellite and IP STB/Home Gateway March 2018 2 MB
Configuration Tools MxL7704 Configuration Tool Rev 2.0 2.0 March 2019 675.5 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
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Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement Buy Now Order Samples PDN
MXL7704-BQB-T QFN32 5x5 OPT4 -40 125 Active Order
MXL7704-B-EVB Board OBS
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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.


Pkg Code Details Quantities Dimensions PDF
QFN32 5x5 OPT4
  • JEDEC Reference: MO-220
  • MSL Pb-Free: L2 @ 260ºC
  • MSL SnPb Eutectic:
  • ThetaJA: 30
  • 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: Quadrant 1
  • Dimensions: mm
  • Length: 5
  • Width: 5
  • Thickness: 0.9
  • Lead Pitch: 0.05


Distribution Date Description File
06/09/2021 Product Discontinuation Notice - Addendum (See PDN for details)