MP2364
Dual 1.5A, 23V, 1.4MHz
Step-Down Converter
MP2364 Rev. 1.4 www.MonolithicPower.com 1
3/22/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
The Future of Analog IC Technology
TM
TM
DESCRIPTION
The MP2364 is a dual monolithic step-down
switch mode converter with built-in internal
power MOSFETs. It achieves 1.5A continuous
output current for each output over a wide input
supply range with excellent load and line
regulation.
Current mode operation provides fast transient
response and eases loop stabilization.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown. In
shutdown mode, the regulator draws 40µA of
supply current.
The MP2364 requires a minimum number of
readily available standard external components.
EVALUATION BOARD REFERENCE
Board Number Dimensions
EV2364DF-01A 2.2”X x 1.6”Y x 0.4”Z
FEATURES
• 1.5A Current for Each Output
• 0.18 Internal Power MOSFET Switches
• Stable with Low ESR Output Ceramic
Capacitors
• Up to 90% Efficiency
• 40µA Shutdown Mode
• Fixed 1.4MHz Frequency
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Wide 4.75V to 23V Operating Input Range
• Each Output Adjustable from 0.92V to 16V
• Configurable for Single Output with Double
the Current
• Programmable Under Voltage Lockout
• Programmable Soft-Start
• Available in TSSOP20 with Exposed Pad
and SOIC Packages
APPLICATIONS
• Distributed Power Systems
• I/O and Core supplies
• DSL Modems
• Set top boxes
• Cable Modems
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
MP2364
SSB
BSB
NC2
INB
SWB
PGB
SGB
FBA
COMPA
ENA
10
9
8
7
6
5
4
3
2
1
SSA
NC1
BSA
INA
SWA
PGA
SGA
FBB
COMPB
ENB
20
19
18
17
16
15
14
13
12
11
3.3nF
10nF
82pF
10nF
2.5V @ 1.5A
OFF ON
OFF ON
MP2364_TAC_S01
2A
Schottky
2A
Schottky
12V
3.3V @ 1.5A
2.2nF
100
90
80
70
60
50
EFFICIENCY (%)
0 0.5 1.0 1.5
LOAD CURRENT (A)
MP2364_EC01
Efficiency vs
Load Current
V
OUT
=5V
V
OUT
=3.3V
V
OUT
=2.5V
