MP111

Dying Gasp Storage and Release

Control IC

MP111 Rev. 1.0 1

www.MonolithicPower.com

1

4/25/2018

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

© 2018 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP111 is a dying gasp storage and release

controller. It charges storage capacitor from the

input during normal operation. Once the storage

capacitor is charged to the selected voltage, the

charge is stopped, and the storage capacitor is

separated from the input. The charging circuit

maintains the storage voltage after the charge

is completed.

The MP111 keeps monitoring the input voltage,

and releases the charge from storage capacitor

to input capacitor when the input voltage is

lower than the selected release voltage. It

regulates the input voltage to keep it close to

release voltage for as long as possible.

The MP111 has built-in current limit circuit

during the charging up of the storage capacitors.

The storage and release voltage can be

programmed to user’s desired value by external

resistors.

The MP111 comes in an SOIC-8 package and

requires a minimum number of readily available

standard external components.

FEATURES

 Wide 4.5V to 18V Input Operating Range

 2.5A dumping current from Storage to VIN

 Built-in 250mA Current Limit for Charging

Storage Capacitor

 User Programmable Storage and Release

Voltage

 Dying Gasp FLAG Indicator

 Available in SOIC-8 package

APPLICATIONS

 Cable/DSL/PON Modems

 Home Gateway

 Access Point Networks

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

MP111

GND

FB1

BST

VIN

C1

22

GASP

VIN

4.5V to 18V

VSTRG

23V

STRG

VMAX

C4

22nF

C3

2.2nF

C5

2000

7

8

1

3

6

4

2

FB2

5

R3

464k

R4

49.9k

C2

15pF

R1

845k

R2

37.4k

R5

10

Open Drain

Output

Connect

to SW

5V/div.

5V/div.

GASP

10V/div.

1A/div.