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参数资料
| 型号： | MP28275EL |
| 厂商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 1300 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | 3 X 4 MM, MO-229VGED-3, QFN-14 |
| 文件页数： | 1/14页 |
| 文件大小： | 372K |
| 代理商： | MP28275EL |
MP28275
7V, 5A, 1.1MHz
Synchronous Step-down Converter
MP28275 Rev. 0.91
www.MonolithicPower.com
1
12/2/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2009 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP28275 is a high frequency synchronous
rectified step-down switch mode converter with
built-in internal power MOSFETs. It offers a
very compact solution to achieve 5A continuous
output current with excellent load and line
regulation. The MP28275 operates at high
efficiency over a wide output current load range.
Current mode operation provides fast transient
response and eases loop stabilization.
Full protection features include OCP and thermal
shut down.
The MP28275 requires a minimum number of
readily available standard external components
and is available in a space saving 3mm x 4mm
14-pin QFN package.
FEATURES
4.5V to 7V Operating Input Range
5A Output Current
Low RDS(ON) Internal Power MOSFETs
Proprietary
Switching
Loss
Reduction
Technique
Fixed 1.1MHz Switching Frequency
Sync from 300KHz to 2MHz External Clock
Internal Compensation
Thermal Shutdown
Over-Current-Protection and Hiccup
Output Adjustable from 0.8V
Available in 3x4mm QFN14 Package
APPLICATIONS
Notebook Systems and I/O Power
Networking Systems
Digital Set Top Boxes
Personal Video Recorders
Flat Panel Television and Monitors
Distributed Power Systems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
The information in this datasheet about the product and its associated
technologies are proprietary and intellectual property of Monolithic Power
Systems and are protected by copyright and pending patent applications.
TYPICAL APPLICATION （FOR NOTEBOOK）
C1
22uF
MP28275
SW
GND
FB
EN/SYNC
EN
IN
BST
VCC
C4
0.1uF
L1
1.2uH
R2
10K
Rt
25K
R1
5K
R3
100K
C2
47uF
C3
0.1uF
VOUT
1.2V@5A
8
12, 13, 14
6
2, 3
4, 5
1
11
7
PG
9
012345
0
10
20
30
40
50
60
70
80
90
100
Efficiency
VOUT=1.2V
OUTPUT CURRENT (A)
E
F
ICI
E
N
CY
(
%
)
VIN=7V
VIN=5V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MP28275EL-LF-P | 功能描述:开关变换器、稳压器与控制器 5A, 5V, 1.1MHz Sync Buck w/ PG RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MP28275EL-LF-Z | 功能描述:开关变换器、稳压器与控制器 5A, 5V, 1.1MHz Sync Buck w/ PG RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MP28315CN-LF | 制造商:Monolithic Power Systems 功能描述:3A, 16V, 340KHZ SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER - Rail/Tube |
| MP28315CN-LF-Z | 制造商:Monolithic Power Systems 功能描述:3A, 16V, 340KHZ SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER - Tape and Reel |
| MP28317DS-LF-Z | 制造商:Monolithic Power Systems 功能描述:- Tape and Reel |
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