MP2143DJ-LF-Z Datasheet, PDF (1/14 Pages) MPS Industries, Inc. – 3A, 5.5V, 1.2MHz, 40μA IQ, COT Synchronous Step Down Switcher

The Future of Analog IC Technology
DESCRIPTION
The MP2143 is a monolithic, step-down, switch-
mode converter with internal power MOSFETs.
It can achieve up to 3A continuous output
current from a 2.5V–to-5.5V input voltage with
excellent load and line regulation. The output
voltage can be regulated as low as 0.6V.
Constant-on-time control provides fast transient
response and eases loop stabilization. Fault-
condition protections include cycle-by-cycle
current limiting and thermal shutdown.
The MP2143 is available in small TSOT23-8
package and requires only a minimal number of
readily-available standard external components.
The MP2143 is ideal for a wide range of
applications including high-performance DSPs,
FPGAs, smartphones, portable instruments,
and DVD drivers.
MP2143
3A, 5.5V, 1.2MHz, 40μA I_Q, COT
Synchronous Step Down Switcher
FEATURES
 Wide 2.5V-to-5.5V Operating Input Range
 Output Voltage as Low as 0.6V
 100% Duty Cycle in Dropout
 Up to 3A Output Current
 Low I_Q: 40µA
 80mΩ and 40mΩ 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
APPLICATIONS
 Low Voltage I/O System Power
 Handheld/Battery-powered Systems
 Wireless/Networking Cards
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
VIN
2.5V to 5.5V
C1
10 F
EN
PG
2 _VIN
SW ³
OUT ⁵
MP2143
8 _EN
FB ⁷
1 _PG
PGND AGND
4
6
L1
1H
R1
200k
R2
200k
VOUT
1.2V/2A
C2
10 F
MP2143 Rev. 1.07
www.MonolithicPower.com
1
7/4/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.