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參數資料
| 型號： | AAT1147 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter |
| 中文描述： | 高效率，低噪聲，快速瞬態400mA的降壓轉換器 |
| 文件頁數： | 1/19頁 |
| 文件大小： | 620K |
| 代理商： | AAT1147 |
AAT1147
High Efficiency, Low Noise, Fast Transient
400mA Step-Down Converter
1147.2006.05.1.0
1
SwitchReg
General Description
The AAT1147 SwitchReg is a member of
AnalogicTech's Total Power Management IC
(TPMIC) product family. It is a fixed frequency
1.4MHz step-down converter with an input volt-
age range of 2.7V to 5.5V and output voltage as
low as 0.6V.
The AAT1147 is optimized for low noise portable
applications, reacts quickly to load variations, and
reaches peak efficiency at heavy load.
The AAT1147 output voltage is programmable with
external feedback resistors. It can deliver 400mA
of load current while maintaining high power effi-
ciency. The 1.4MHz switching frequency mini-
mizes the size of external components while keep-
ing switching losses low.
The AAT1147 is available in a Pb-free, space-sav-
ing 2.0x2.1mm SC70JW-8 package and is rated
over the -40°C to +85°C temperature range.
Features
V
IN
Range: 2.7V to 5.5V
V
OUT
Adjustable from 0.6V to V
IN
400mA Output Current
Up to 98% Efficiency
Low Noise, 1.4MHz Fixed Frequency PWM
Operation
Fast Load Transient
150μs Soft Start
Over-Temperature and Current Limit
Protection
100% Duty Cycle Low Dropout Operation
<1μA Shutdown Current
8-Pin SC70JW Package
Temperature Range: -40°C to +85°C
Applications
Cellular Phones
Digital Cameras
Handheld Instruments
Microprocessor/DSP Core /IO Power
PDAs and Handheld Computers
USB devices
Typical Application
4.7
μ
H
L1
118k
R1
4.7
μ
F
C1
59k
R2
4.7
μ
F
C2
EN
1
OUT
2
VIN
3
LX
4
AGND
5
PGND
6
PGND
7
PGND
8
AAT1147
U1
V
IN
V
O
= 1.8V
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相關代理商/技術參數 |
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|---|---|
| AAT1147IJS-0.6-DB1 | 制造商:Skyworks Solutions Inc 功能描述:Evaluation Board for AAT1147 High Efficiency Step-Down Converter |
| AAT1147IJS-0.6-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter |
| AAT1149 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:3MHz Fast Transient 400mA Step-Down Converter |
| AAT1149_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:3MHz Fast Transient 400mA Step-Down Converter |
| AAT1149A | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:2.2MHz Fast Transient 400mA Step-Down Converter |
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