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參數(shù)資料
| 型號： | AAT3183IJS-1.5-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 300mA Inductorless Step-Down Converter |
| 中文描述： | 300mA的電感降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 392K |
| 代理商： | AAT3183IJS-1.5-T1 |
AAT3183
300mA Inductorless Step-Down Converter
3183.2007.07.1.2
1
ChargePump
General Description
The AAT3183 is a high efficiency step-down charge
pump converter providing up to 300mA of output
current. The 1/2x (gain) charge pump converter
topology provides enhanced efficiency over conven-
tional LDO regulators and requires only three low
cost ceramic capacitors. No inductor is required;
saving space and cost when compared to inductive
switching regulators.
The AAT3183 typically consumes 35μA of no load
(zero output current) quiescent current, making it
ideal for portable battery powered systems.
Shutdown current is less than 1μA.
The AAT3183 soft-start prevents excessive inrush
current while providing monotonic turn-on charac-
teristics. The device includes integrated short-cir-
cuit and over-temperature (thermal) protection to
safeguard system components.
The AAT3183 is available in a Pb-free 2.0x2.1mm
SC70JW-8 package. Operating temperature range
is -40oC to +85oC.
Features
V
IN
Range: 2.7V to 5.5V
V
OUT
: 1.5V
300mA Maximum Output Current
Ultra-Small Solution for Portable Applications
— Small Footprint
— Only Three External Ceramic Capacitors
Required
— No Inductor
High Efficiency over the Output Current Range
Excellent Transient Performance
35μA Typical Quiescent Current
<1.0μA Shutdown Current
Up to 2MHz Switching Frequency
Integrated Soft-Start
Short-Circuit and Thermal Protection
2.0x2.1mm SC70JW-8 Package
-40oC to 85oC Temperature Range
Applications
Camcorders
Digital Still Cameras
DSP Core Supplies
PDAs, Handheld Devices, Notebook PCs
Smart Phones
Typical Application
AAT3183
C1-
C1+
EN
IN
OUT
GND
C
4.7μF
C
1μF
C
1μF
V
IN
V
ENABLE
V
OUT
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