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MP2259DJ 参数 Datasheet PDF下载

MP2259DJ图片预览
型号: MP2259DJ
PDF下载: 下载PDF文件 查看货源
内容描述: 1A , 16V , 1.4MHz的降压转换器 [1A, 16V, 1.4MHz Step-Down Converter]
分类和应用: 转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管输出元件
文件页数/大小: 9 页 / 325 K
品牌: MPS [ MONOLITHIC POWER SYSTEMS ]
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MP2259
1A, 16V, 1.4MHz
Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP2259 is a monolithic integrated step-
down switch mode converter with an internal
power MOSFET. It achieves 1A continuous
output current 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.
The MP2259 requires a minimum number of
readily available standard external components.
The MP2259 is available in TSOT23-6 and
SOT23-6 packages.
FEATURES
1A Output Current
0.5Ω Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 92% Efficiency
0.1μA Shutdown Mode
Fixed 1.4MHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.5V to 16V Operating Input Range
Output Adjustable from 0.81V to 14V
Available in TSOT23-6 and SOT23-6 Packages
Hand Disk Drive
xDSL Modems Cable
Set-Top Box
APPLICATIONS
For MPS green status, please visit MPS website under Quality Assurance
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
Efficiency vs
Load Current
12V
V
IN
5
IN
BST
1
100
MP2259
OFF ON
4
EN
SW
6
D1
B230A
FB
3
V
OUT
3.3V @ 1A
EFFICIENCY (%)
CB
10nF
95
90
85
80
75
70
65
60
55
50
10
V
OUT
= 5V
V
OUT
= 3.3V
GND
2
V
IN
= 12V
100
1000
MP2259-EC01
LOAD CURRENT (mA)
MP2259 Rev. 0.92
9/15/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
1