參數(shù)資料
型號(hào)： AAT1143
廠商： Advanced Analogic Technologies, Inc.
元件分類： 圓形連接器
英文描述： Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:4; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight
中文描述： 1MHz的400mA的降壓轉(zhuǎn)換器
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 594K
代理商： AAT1143
AAT1143
1MHz 400mA Step-Down Converter
1143.2005.09.1.7
1
SwitchReg
General Description
The AAT1143 SwitchReg is a member of
AnalogicTech's Total Power Management IC
(TPMIC) product family. It is a 1MHz step-down
converter with an input voltage range of 2.7V to
5.5V and output as low as 0.6V. Its low supply cur-
rent, small size, and high switching frequency
make the AAT1143 the ideal choice for portable
applications.
The AAT1143 is available in either a fixed version
with internal feedback or a programmable version
with external feedback resistors. It can deliver
400mA of load current while maintaining a low
25μA no load quiescent current. The 1MHz switch-
ing frequency minimizes the size of external com-
ponents while keeping switching losses low. The
AAT1143 feedback and control delivers excellent
load regulation and transient response with a small
output inductor and capacitor.
The AAT1143 is designed to maintain high efficien-
cy throughout the operating range, which is critical
for portable applications.
The AAT1143 is available in a space-saving
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 Down to 0.6V
— Fixed or Adjustable Version
25μA No Load Quiescent Current
Up to 95% Efficiency
400mA Max Output Current
1MHz Switching Frequency
Soft Start
Over-Temperature Protection
Current Limit Protection
100% Duty Cycle Low-Dropout Operation
0.1μA Shutdown Current
SC70JW-8 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 (Fixed Output Voltage)
AAT1143 Efficiency
(V
OUT
= 2.5V; L = 4.7
μ
H)
Output Current (mA)
E
60
70
80
90
100
0.1
1
10
100
1000
V
IN
= 3.3V
4.7
μ
H
L1
4.7
μ
F
C1
4.7
μ
F
C2
EN
1
OUT
2
VIN
3
LX
4
AGND
5
PGND
6
PGND
7
PGND
8
AAT1143
U1
V
IN
V
O
相關(guān)PDF資料
PDF描述
AAT1143IJS-0.6-T1 Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:5; Connector Shell Size:24; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight
AAT1143IJS-1.2-T1 GT 24C 24#16 SKT RECP
AAT1143IJS-1.5-T1 GT 2C 2#4 SKT RECP WALL
AAT1143IJS-1.6-T1 GT 22C 18#16 4#12 SKT RECP
AAT1143IJS-1.8-T1 GT 22C 18#16 4#12 SKT RECP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AAT1143_06 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 400mA Step-Down Converter
AAT1143IJS-0.6-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 400mA Step-Down Converter
AAT1143IJS-1.2-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 400mA Step-Down Converter
AAT1143IJS-1.5-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 400mA Step-Down Converter
AAT1143IJS-1.6-T1 功能描述:電源開(kāi)關(guān) IC - 配電 Fast Trans 600mA Step-Down Cnvrt RoHS:否 制造商:Exar 輸出端數(shù)量:1 開(kāi)啟電阻（最大值）:85 mOhms 開(kāi)啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
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