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參數資料
| 型號： | AAT1151IVN-2.5-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | 850kHz 700mA Synchronous Buck DC/DC Converter |
| 中文描述： | 850kHz 700mA的同步降壓DC / DC轉換器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 535K |
| 代理商： | AAT1151IVN-2.5-T1 |
SwitchReg
AAT1151
850kHz 700mA Synchronous
Buck DC/DC Converter
1151.2007.01.1.6
1
General Description
The AAT1151 SwitchReg is a step-down switch-
ing converter ideal for applications where high effi-
ciency is required over the full range of output load
conditions. The 2.7V to 5.5V input voltage range
makes the AAT1151 ideal for single-cell lithium-
ion/polymer battery applications. Capable of more
than 700mA with internal MOSFETs, the current-
mode controlled IC provides high efficiency using
synchronous rectification. Fully integrated compen-
sation simplifies system design and lowers external
parts count.
The device operates at a fixed 850kHz switching fre-
quency and enters Pulse Frequency Modulation
(PFM) mode for light load current to maintain high
efficiency across all load conditions.
The AAT1151 is available in Pb-free MSOP-8 and
QFN33-16 packages and is rated over the -40°C to
+85°C temperature range.
Features
V
IN
Range: 2.7V to 5.5V
Up to 95% Efficiency
High Initial Accuracy ±1%
110m
Ω
R
DS(ON)
Internal Switches
<1
μ
A Shutdown Current
850kHz Switching Frequency
Fixed V
OUT
or Adjustable V
OUT
≥
1.0V
Integrated Power Switches
Synchronous Rectification
Current Mode Operation
Internal Compensation
Stable with Ceramic Capacitors
PFM for Optimum Efficiency for All Load
Conditions
Internal Soft Start
Over-Temperature Protection
Current Limit Protection
MSOP-8 and QFN33-16 Packages
-40°C to +85°C Temperature Range
Applications
Cellular Phones
Digital Cameras
MP3 Players
Notebook Computers
PDAs
USB-Powered Equipment
Wireless Notebook Adapters
Typical Application
OUTPUT
3.0
μ
H
2x 22
μ
F
10
μ
F
0.1
μ
F
100
Ω
LX
VP
INPUT
FB
SGND
AAT1151
ENABLE
VCC
PGND
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| AAT1155_06 | 1MHz 2.5A Step-Down DC/DC Converter |
| AAT1155IKS-1.0-T1 | 1MHz 2.5A Step-Down DC/DC Converter |
| AAT1155IKS-1.8-T1 | 1MHz 2.5A Step-Down DC/DC Converter |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AAT1152 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 1A Synchronous Buck DC/DC Converter |
| AAT1152_06 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 1A Buck DC/DC Converter |
| AAT1152IKS-1.0-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 1A Synchronous Buck DC/DC Converter |
| AAT1152IKS-1.1-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 1A Synchronous Buck DC/DC Converter |
| AAT1152IKS-1.2-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:850kHz 1A Synchronous Buck DC/DC Converter |
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