MP2234S
High-Efficiency, 2A, 16V, 800kHz
Synchronous, Step-Down Converter
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The Future of Analog IC Technology
DESCRIPTION
FEATURES
The
MP2234S
is
a
high-frequency,
synchronous, rectified, step-down, switch-mode
converter with built-in power MOSFETs. It
offers a compact solution to achieve a 2A
continuous output current with excellent load
and line regulation over a wide input-supply
range. The MP2234S has synchronous mode
operation for higher efficiency over the output
current load range.
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•
Current-mode operation provides fast transient
response and eases loop stabilization.
Full protection features include over-current
protection (OCP) and thermal shut down (TSD).
The MP2234S requires a minimal number of
readily-available standard external components,
and is available in a space-saving 8-pin
TSOT23 package.
•
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•
•
•
•
•
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Wide 4.5V-to-16V Operating Input Range
140mΩ/60mΩ Low RDS(ON) Internal Power
MOSFETs
High-Efficiency Synchronous Mode
Operation
Fixed 800kHz Switching Frequency
Synchronizes from a 300kHz-to-2MHz
External Clock
Power-Save Mode at Light Load
External Soft-Start
Over Current Protection and Hiccup
Thermal Shutdown
Output Adjustable from 0.804V
Available in a 8-pin TSOT-23 Package
APPLICATIONS
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•
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Notebook Systems and I/O Power
Digital Set-Top Boxes
Flat-Panel Television and Monitors
Distributed Power Systems
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.
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TYPICAL APPLICATION
R3
20
12V
C1
22µF
C4
0.1µF
L1
4.7µH
MP2234S
3.3V/2A
C2
47µF
C3
0.1µF
R5
5.6k
R1
40.2k
R2
13k
C5
22nF
MP2234S Rev.1.0
4/3/2015
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
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MP2234S – SYNCHRONOUS STEP-DOWN CONVERTER
ORDERING INFORMATION
Package
Top Marking
See Below
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Part Number*
MP2234SGJ
TSOT-23
* For Tape & Reel, add suffix –Z (e.g. MP2234SGJ–Z).
TOP MARKING
ALZ: product code of MP2234SGJ;
Y: year code;
PACKAGE REFERENCE
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MP2234S Rev.1.0
4/3/2015
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
2
MP2234S – SYNCHRONOUS STEP-DOWN CONVERTER
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance
VIN ................................................ -0.3V to 17V
VSW ....................................................................
-0.3V (-5V for
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