DESCRIPTION
The MP5505E is a lossless energy storage and
management unit targeted toward solid-state
and hard-disk drive applications. The highly
integrated input current limit and energy
storage-and-release management make the
system solution very compact.
The internal input current limit block with dV/dt
control prevents inrush current during system
start-up. The bus voltage start-up slew rate is
programmable, and a power-on reset function is
included for hot-swapping. MPS’s patented
energy storage-and-release management
control circuit minimizes the storage capacitor
requirement. It pumps the input voltage to a
higher storage voltage and releases the energy
over a hold-up time to the system in the case of
an input outage. The storage voltage and the
release voltage are both programmable for
different system applications.
The MP5505E requires a minimal number of
readily available, standard, external
components and is available in a QFN-20
(3mmx4mm) package.

FEATURES
 Wide 2.7V to 7V Operating Input Range
 Input Current Limiter with Integrated 60mΩ
MOSFET
 Up to 4.5A Input Current Limit
 Reverse-Current Protection
 6V Bus Clamping Voltage
 Power-On Reset
 Adjustable dV/dt Slew Rate for Bus Voltage
Start-Up
 Internal 30mΩ Disconnect Switch
 Internal 70mΩ and 60mΩ Power Switches
for Energy Storage and Release
Management Circuits
 Thermal Protection
 EN and Power Good Indicators
 Available in a QFN-20 (3mmx4mm)
Package

APPLICATIONS
 Solid-State Drives (SSD)
 Hard-Disk Drives
 Power Back-Up/Battery Hold-Up Supplies