MP2122GJ-P Datasheet, PDF (1/16 Pages) MPS Industries, Inc. – 6V, 2A, Low Quiescent Current Dual, SYNC Buck Regulator

The Future of Analog IC Technology
MP2122
6V, 2A, Low Quiescent Current
Dual, SYNC Buck Regulator
DESCRIPTION
The MP2122 is an internally-compensated,
1MHz fixed-frequency, dual PWM, synchronous,
step-down regulator. The MP2122 operates
from a 2.7V-to-6V input, generates an output
voltage as low as 0.608V, and has a 45µA
quiescent current that makes it ideal for
powering portable equipment that runs on a
single cell lithium-ion (Li+) battery.
The MP2122 integrates dual 80mΩ high-side
switches and 35mΩ synchronous rectifiers for
high efficiency without an external Schottky
diode. Peak-current mode control and internal
compensation limits the minimum number of
readily-available external components.
Fault-condition protections include cycle-by-cycle
current limiting and thermal shutdown.
The MP2122 is available in an 8-pin TSOT23-8
package.
FEATURES
 Dual 2A-Output Current
 >93% Peak Efficiency
 >80% Light-Load Efficiency
 Wide 2.7V-to-6V Operating Input Range
 80mΩ and 35mΩ Internal Power MOSFET
 1MHz Fixed Switching Frequency
 Adjustable Output from 0.608V to VIN
 180° Phase-Shifted Operation
 100% Duty-Cycle Operation
 45µA Quiescent Current
 Cycle-by-Cycle Over-Current Protection
 Short-Circuit Protection with Hiccup Mode
 Thermal Shutdown
 Available in an 8-pin TSOT23-8 Package
APPLICATIONS
 Small/Handhold Devices
 DVD Drivers
 Portable Instruments
 Smartphones and Feature Phones
 Battery-Powered Devices
All MPS parts are lead-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
VIN
5V
EN1
VOUT1
1.8V
COUT1
22µF
CIN
22µF
L1
1.5uH
R1
806kO
EN1 ^IN EN2
SW1 SW2
MP2122
FB1 ^GND FB2
L2
1.5uH
R3
806kO
EN2
VOUT2
1.2V
C_{OUT 2}
22µF
R2
412kO
R4
825kO
100
90
80
70
60
50
40
30
0.01
0.1
1
10
MP2122 Rev. 1.02
www.MonolithicPower.com
1
6/12/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.