MP2144
2A, 5.5V, 1.2MHz, 40μA I
Q
, COT
Synchronous Step Down Switcher
The Future of Analog IC Technology
DESCRIPTION
The MP2144 is a monolithic, step-down, switch-
mode converter with internal power MOSFETs.
It can achieve up to 2A continuous output
current from a 2.5V–to-5.5V input voltage with
excellent load and line regulation. The output
voltage can be regulated to as low as 0.6V.
The constant-on-time control scheme provides
fast transient response and eases loop
stabilization. Fault condition protections include
cycle-by-cycle current limiting and thermal
shutdown.
The MP2144 is available in small TSOT23-8
package and requires only a minimal number of
readily available standard external components.
The MP2144 is ideal for a wide range of
applications including high-performance DSPs,
FPGAs, smartphones, portable instruments,
and DVD drivers.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Wide 2.5V-to-5.5V Operating Input Range
Output Voltage as Low as 0.6V
100% Duty Cycle in Dropout
Up to 2A Output Current
Low IQ: 40µA
90mΩ and 60mΩ Internal Power MOSFET
Switches
Default 1.2MHz Switching Frequency
EN and Power-Good for Power Sequencing
Cycle-by-Cycle Over-Current Protection
Auto Discharge at Power-Off
Short-Circuit Protect with Hiccup Mode
Stable with Low-ESR Output Ceramic
Capacitors
Available in a TSOT23-8 Package
Low Voltage I/O System Power
Handheld/Battery-powered Systems
Wireless/Networking Cards
APPLICATIONS
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
2.5V to 5.5V
C1
10 F
EN
PG
8
1
2
VIN
SW
OUT
MP2144
3
5
L1
1
VOUT
1.2V/2A
C2
10
100
90
80
70
60
50
40
30
20
10
0
0.001
0.01
0.1
1
10
R1
200
FB
7
EN
PG
GND
4,6
R2
200k
MP2144 Rev. 1.03
12/20/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1
MPS [ MONOLITHIC POWER SYSTEMS ]
