MP2328
High-Efficiency, 28V, 2A, 450kHz,
Synchronous Step-Down Converter
In SOT583 Package
DESCRIPTION
FEATURES
The MP2328 is a fully integrated, high-
frequency, synchronous, rectified, step-down
switch-mode converter with internal power
MOSFETs. It offers a very compact solution to
achieve 2A of continuous output current across
a wide input range, with excellent load and line
regulation. The MP2328 has synchronous
mode operation for high efficiency across the
wide output current load range.
Wide 4.5V to 28V Operating Input Range
Wide 0.5V to 16V VOUT
±1.5% Internal Reference Accuracy Over-
Temperature
130mΩ/60mΩ Low RDS(ON) Internal Power
MOSFETs
160µA Quiescent Current
>92% Efficiency for 24V to 5V/2A Condition
Power Save Mode at Light Load
Fast Load Transient Response
450kHz Switching Frequency
Constant-on-time (COT) control provides very
fast transient response and easy loop design,
as well as tight output regulation.
tON Extension to Improve Dropout
Configurable Soft-Start Time
Power Good Indication
Over-Current Protection with Hiccup Mode
Thermal Shutdown Protection
Available in an SOT583 Package
Optimized Performance with
MPS Inductor MPL-AL
Series
Full protection features include short-circuit
protection (SCP), over-current protection (OCP),
under-voltage protection (UVP), and thermal
shutdown.
The MP2328 requires a minimal number of
readily available, standard external components.
It is available in a space-saving SOT583
package.
APPLICATIONS
Game Consoles
Multi-Function Printers
Power Meters
Flat Panel Televisions and Monitors
General-Purpose Power Supplies
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
registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
TYPICAL APPLICATION
Efficiency
VOUT = 5V, L = 10μH, DCR = 24mΩ
100
V
IN
6.5V to 28V
BST
SW
L1
10μH
C3
0.1μF
VIN
VOUT
90
C1
10μF x 2
5V/2A
C2
22μF x 2
80
Vin=12V
MP2328
R1
On/Off
EN
SS
70
60
50
40
Vin=19V
Vin=24V
90.9kΩ
FB
R6
10kΩ
C4
22nF
R2
10kΩ
PG
GND
0.001
0.01
0.1
1
10
LOAD CURRENT(A)
MP2328 Rev. 1.0
12/11/2020
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
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