Features
 Full power system including 5 integrated outputs
 4A, 4A, 2A and 2A Switching Regulators
 500mA Source/Sink Linear regulator
 Single rail operation 5.5V to 12V
 Output Range from 0.25V to 5.1V for outputs A-D and 0.5V to 3.6V for LDO
 Allows combining outputs and/or the use of an external IR MOSFET™ Power Stage to increase output
current to as high as 50A
 Emulated current mode control without external compensation
 Differential voltage sensing on Switcher A for higher accuracy
 I2C / PMBus with integrated level shifter
 Advanced Sequencing control
 Extensive PMBus command set of 74 commands
 Integrated current sensing and full telemetry including voltage, current, temperature and faults
 Rated for -40°C to +125°C TJ operation
 Pb-Free, RoHS6, 7x7mm, 56-pin, 0.4mm pitch QFN

Potential applications
 High density ASIC, FPGA & CPU multi-rail systems
 Embedded Computing systems
 Communications and Storage systems

Description
The IRPS5401 is a complete power management unit delivering up to 5 output voltages to processors, FPGA’s
and other multi-rail power systems. Four high efficiency configurable switching regulators and a Source/Sink
Linear regulator provide the typical rails required such as core voltage, memory voltage and I/O voltages.
Integrated, accurate current, voltage and temperature sensing allows telemetry and fault reporting through the
I2C/PMBus.
The IRPS5401 switching regulators utilize fixed frequency emulated current mode control, and thus no external
compensation is required.
The IRPS5401 is highly flexible. Switchers A and B deliver 2A each. Switchers C and D, deliver 4A each and can
also be combined to deliver 8A. Further, Switcher A can be configured to use an external IR MOSFET™ Power
Stage to deliver up to 50A or more.