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
ll MPS parts are lead-free, halogen free, and adhere to the RoHS
directive. For MPS green status, please visit MPS website under Quality
ssurance.
“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
22 nF
C3
2.2nF
C5
2000
7
8
1
3
6
4
2
FB2
5
R3
464 k
R4
49 .9 k
C2
15 pF
R1
845 k
R2
37 .4k
R5
10
Open Drain
Output
Connect
to SW
V
STORAGE
5V/div.
V
IN
5V/div.
GASP
10V/div.
I
RELEASE
1A/div.
