MP2331H
24V, 2A, 1.2MHz,
Synchronous Buck Converter
DESCRIPTION
FEATURES
The MP2331H is a fully integrated, high-
frequency, synchronous, rectified, step-down,
switch-mode converter with internal power
MOSFETs. The MP2331H offers a very
compact solution that achieves 2A of
continuous output current with excellent load
and line regulation over a wide input range. The
MP2331H uses synchronous mode operation
for higher efficiency over the output current load
range.
Wide 4.2V to 24V Operating Input Range
110mΩ/45mΩ Low RDS(ON) Internal Power
MOSFETs
200µA Low IQ
High-Efficiency Synchronous Mode
Operation
Fast Load Transient Response
1.2MHz Switching Frequency
TON Extension
Forced PWM Operation
Programmable Soft-Start Time
Power Good (PG) Indication
Over-Current Protection (OCP) and Hiccup
Pre-Bias Start-Up
Constant-on-time (COT) control operation
provides very fast transient response, easy loop
design, and very tight output regulation.
Full protection features include short-circuit
protection (SCP), over-current protection (OCP),
under-voltage protection (UVP), and thermal
shutdown.
Thermal Shutdown
Available in a SOT583 (1.6mmx2.1mm)
Package
The MP2331H requires a minimal number of
APPLICATIONS
readily
available,
standard,
external
Game Consoles
components and is available in a space-saving
SOT583 package.
Digital Set-Top Boxes
Flat-Panel Television and Monitors
General Purposes
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under
Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
TYPICAL APPLICATION
Efficiency
VOUT = 3.3V, L = 2.2μH, DCR = 11.4mΩ
R4
19V
20Ω
C1
22µF
C3
1µF
L1
2.2µH
3.3V/2A
PG
PG
C2
44µF
MP2331H
R1
40.2kΩ
R2
R3
20kΩ
13kΩ
SS
C4
6.8nF
MP2331H Rev. 1.0
10/18/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
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