MP111
MP111 is Dying Gasp Storage and Release Controller manufactured by Monolithic Power Systems.
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 pleted.
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 es in an SOIC-8 package and requires a minimum number of readily available standard external ponents.
TYPICAL APPLICATION
FEATURES
- Wide 4.5V to 18V Input Operating Range
- 2.5A dumping current from Storage to VIN
- Built-in 250m A 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 Ro HS 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.
VIN 4.5V to 18V
C1 22
Open Drain Output
C2
15p F
R3
464k
3 FB2
C3 2.2n F
VMAX
C4 22n F
BST 1
R4 49.9k
MP111 STRG 7
6 GASP 4 GND
R1 845k
FB1...
