MP5505

7V, 4A, High-Efficiency Energy Storage and

Management Unit

MP5505 Rev. 1.01

www.MonolithicPower.com

1

1/12/2015

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2015 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

MP5505 is a lossless energy storage and

management unit targeted at the 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. It also includes a Power-On-

Reset function 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 MP5505 requires a minimal number of

readily-available standard external components,

and is available in a 20-pin QFN (3mm×4mm)

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 QFN20 (3mm×4mm) Package

APPLICATIONS

• Solid-State Drives

• Hard-Disk Drives

• Power Back-up/Battery Hold-up Supplies

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

MP5505

FBS

STRG

FBB

VBO

VIN

C1

C2

R1

105k

R2

24.3k

R4

14k

R3

200k

C3

SW

L1

4.7µH

BST

C5

100nF

EN

C7

10nF

DVDT

C6

100nF

22µF

CST

ILIM

TPOR

R7

1k

22µF

PGND

VB

ICH

ENCH

AGND

20

7

6

17

3

2

1

814

5

4

16

10

18

9

11

12

19

15

R6

200k

OFF ON

D1

C4

1µF

DC/DCs

5V/div

5V/div

PGs

5V/div

5V/div