MP2362 Datasheet, PDF (1/11 Pages) Monolithic Power Systems – Dual 2A, 23V, 380KHz Step-Down Converter with Frequency Synchronization

MP2362
Dual 2A, 23V, 380KHz Step-Down Converter
with Frequency Synchronization
The Future of Analog IC Technology
DESCRIPTION
The MP2362 is a dual monolithic step-down
switch mode converter with built-in internal
power MOSFETs. It achieves 2A continuous
output current for each output over a wide input
supply range with excellent load and line
regulation. Each channel can be independently
synchronized to a frequency up to 1.2MHz.
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 MP2362 requires a minimum number of
readily available standard external components.
EVALUATION BOARD REFERENCE
Board Number
EV2362DF-00A
Dimensions
2.2”X x 1.6”Y x 0.4”Z
FEATURES
• 2A Current for Each Output
• 0.18Ω Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic
Capacitors
• Up to 90% Efficiency
• 40µA Shutdown Mode
• Fixed 380KHz Frequency
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Wide 4.75V to 23V Operating Input Range
• Each Output Adjustable from 1.22V to 16V
• Configurable for Single Output with Double
the Current
• Programmable Under Voltage Lockout
• Frequency Synchronization Input
• Available in TSSOP20 with Exposed Pad
Package
APPLICATIONS
• Distributed Power Systems
• I/O and Core supplies
• Set top boxes
• Cable Modems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
12V
3.3V @ 2A
SYNC CLOCK
OFF ON
10nF
B230A
1
SYNCA
20
ENA
2
NC1
19
COMPA
3
BSA
18
FBA
4
INA
17
SGB
5
SWA
6
PGA
16
MP2362
PGB
15
SWB
7
SGA
8
FBB
14
INB
13 10nF
NC2
9
COMPB
12
BSB
10
ENB
11
SYNCB
10nF
B230A
OFF ON
5V @ 2A
10nF
Efficiency vs
Output Current Voltage
95
V_OUT = 5.0V
90
V_OUT = 3.3V
85
V_OUT = 2.5V
80
75
V_IN = 10V
70
0
0.5
1
1.5
2
OUTPUT CURRENT (A)
MP2362 Rev. 0.93
www.MonolithicPower.com
1
1/25/2010
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