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參數(shù)資料
| 型號： | MP28372DS-LF |
| 廠商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A DUAL SWITCHING CONTROLLER, 1400 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | LEAD FREE, SOIC-16 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 268K |
| 代理商： | MP28372DS-LF |
MP28372
Dual 1.5A, 23V, 1.4MHz
Step-Down Converter
MP28372 Rev. 1.4
www.MonolithicPower.com
1
12/10/2007
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2007 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP28372 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 MP28372 requires a minimum number of
readily available standard external components.
EVALUATION BOARD REFERENCE
Board Number
Dimensions
EV28372DF-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
MP28372
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
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)
Efficiency vs
Load Current
VOUT=5V
VOUT=3.3V
VOUT=2.5V
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