TM
MP2364
Dual 1.5A, 23V, 1.4MHz
Step-Down Converter
The Future of Analog IC Technology
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 40碌A of
supply current.
The MP2364 requires a minimum number of
readily available standard external components.
FEATURES
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1.5A Current for Each Output
0.18鈩?Internal Power MOSFET Switches
Stable with Low ESR Output Ceramic
Capacitors
Up to 90% Efficiency
40碌A 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
Distributed Power Systems
I/O and Core supplies
DSL Modems
Set top boxes
Cable Modems
EVALUATION BOARD REFERENCE
Board Number
EV2364DF-01A
Dimensions
2.2鈥漍 x 1.6鈥漎 x 0.4鈥漐
APPLICATIONS
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鈥淢PS鈥?and 鈥淭he Future of Analog IC Technology鈥?are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
12V
Efficiency vs
Load Current
100
1
2
3
SSA
NC1
BSA
INA
SWA
PGA
SGA
FBB
COMPB
ENB
ENA
COMPA
FBA
SGB
20
19
18
17
16
15
14
13
10nF
12
11
3.3V @ 1.5A
OFF ON
82pF
2A
Schottky
2.2nF
90
V
OUT
=3.3V
V
OUT
=5V
10nF
2A
Schottky
4
5
6
7
8
9
EFFICIENCY (%)
MP2364
PGB
SWB
INB
NC2
BSB
SSB
2.5V @ 1.5A
80
70
60
50
V
OUT
=2.5V
OFF ON
10
3.3nF
0
MP2364_TAC_S01
0.5
1.0
LOAD CURRENT (A)
1.5
MP2364_EC01
MP2364 Rev. 1.4
3/22/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
漏 2006 MPS. All Rights Reserved.
1
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