MP5505A
7V, 4A, High-Efficiency Energy Storage and
Management Unit
The Future of Analog IC Technology
DESCRIPTION
The MP5505A is a lossless energy storage and
management unit targeted at solid-state and
hard-disk drive applications. Its highly integrated
input current limit and energy storage and
release management makes 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. Also, it includes a power-on-reset
function for hot-swapping. MPS’ 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 MP5505A requires a minimal number of
readily available, standard, external components
and is available in a QFN-20 (3mm x 4mm)
package.
FEATURES
Wide 2.7V to 7V Operating Input Range
Input Current Limiter with Integrated 50mΩ
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 (3mm x 4mm)
Package
APPLICATIONS
Solid-State Drives
Hard-Disk Drives
Power Back-Up/Battery Hold-Up Supplies
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive.
For MPS green status, please visit MPS website under Quality
Assurance. “MPS” and “The Future of Analog IC Technology” are Registered
Trademarks of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
DC/DCs
5VIN
D2
TVS
optional
for spike
C2
22μF
R1
105k
R2
24.3k
C1
0.1μF
OFF ON
R6
200k
R7
1k
C3
100nF
C4
10nF
VB
FBB
BST
SW
VIN
VBO
ENCH
STRG
EN
ICH
MP5505A
FBS
ILIM
TPOR
DVDT
PGND
PGIN
PGS
CST
AGND
C6
100nF
L1
4.7μH
R11
200k
R12
14k
C5
1μF
D1
Optional
C7
VSTORAGE Release
VSTORAGE =12V, VRELEASE=4.2V
VB
5V/div
VSTORAGE
5V/div
VIN
5V/div
PGs
5V/div
MP5505A Rev. 1.11
www.MonolithicPower.com
1
5/19/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
