MP2331C Datasheet: Synchronous Step-Down Converter





MP2331C Synchronous Step-Down Converter Datasheet

Part Number MP2331C
Description Synchronous Step-Down Converter
Manufacture MPS
Total Page 20 Pages
PDF Download Download MP2331C Datasheet PDF

Features: MP2331C 24V, 2A, 650kHz, Synchronous Ste p-Down Converter with PG, SS, Forced CC M in 1.6x2.1mm SOT583 Package DESCRIPT ION The MP2331C is a fully integrated h ighfrequency, synchronous, rectified, s tep-down, switch-mode converter with in ternal power MOSFETs. The MP2331C offer s a very compact solution that achieves 2A of continuous output current with e xcellent load and line regulation over a wide input range. The MP2331C uses sy nchronous mode operation for higher eff iciency over the output current load ra nge. Constant-on-time (COT) control ope ration provides very fast transient res ponse, easy loop design, and very tight output regulation. Full protection fea tures include short-circuit protection (SCP), over-current protection (OCP), u nder-voltage protection (UVP), and ther mal shutdown. The MP2331C requires a mi nimal number of readily available, stan dard, external components and is availa ble in a space-saving SOT583 package F EATURES  Wide 4.2V to 24V Operating Input Range  110mΩ/45mΩ L.

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MP2331C
24V, 2A, 650kHz, Synchronous Step-Down
Converter with PG, SS, Forced CCM
in 1.6x2.1mm SOT583 Package
DESCRIPTION
The MP2331C is a fully integrated high-
frequency, synchronous, rectified, step-down,
switch-mode converter with internal power
MOSFETs. The MP2331C offers a very
compact solution that achieves 2A of
continuous output current with excellent load
and line regulation over a wide input range. The
MP2331C uses synchronous mode operation
for higher efficiency over the output current load
range.
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.
The MP2331C requires a minimal number of
readily available, standard, external
components and is available in a space-saving
SOT583 package
FEATURES
Wide 4.2V to 24V Operating Input Range
110mΩ/45Low RDS(ON) Internal Power
MOSFETs
200µA Low IQ
High-Efficiency Synchronous Mode
Operation
Fast Load Transient Response
650kHz Switching Frequency
Forced PWM Operation
Programmable Soft-Start Time
Power Good (PG) Indication
Over-Current Protection (OCP) and Hiccup
Pre-Bias Start-Up
Thermal Shutdown
Available in a SOT583 (1.6mmx2.1mm)
Package
APPLICATIONS
Game Consoles
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
19V
PG
C1
22µF
PG
MP2331C
C4
6.8nF
SS
R4
20Ω
C3
1µF
L1
4.7µH
R3
20kΩ
3.3V/2A
C2
44µF
R1
40.2 kΩ
R2
13 kΩ
Efficiency
VOUT = 3.3V, L = 4.7μH,
DCR = 19.5mΩ
100
95
90
85
80
75
70 Vin=5V
65 Vin=12V
60 Vin=19V
55 Vin=24V
50
0 0.5 1 1.5
LOAD CURRENT (A)
2
MP2331C Rev. 1.0
www.MonolithicPower.com
9/12/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
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