AAT1141 Datasheet PDF - Advanced Analog Technology
Part Number | AAT1141 | |
Description | Fast Transient 600mA Step-Down Converter | |
Manufacturers | Advanced Analog Technology | |
Logo | ||
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PRODUCT DATASHEET
AAT1141
Fast Transient 600mA Step-Down Converter
General Description
The AAT1141 SwitchReg is a 1.4MHz step-down con-
verter with an input voltage range of 2.7V to 5.5V and
output voltage as low as 0.6V. It is optimized to react
quickly to a load variation.
The AAT1141 is available in fixed voltage versions with
internal feedback and a programmable version with
external feedback resistors. It can deliver 600mA of load
current while maintaining a low 35μA no load quiescent
www.DatacSuhrereet4nUt..coTmhe 1.4MHz switching frequency minimizes the
size of external components while keeping switching
losses low.
The AAT1141 is designed to maintain high efficiency
throughout the operating range, which is critical for por-
table applications.
The AAT1141 is available in a Pb-free SOT23-5 package
and is rated over the -40°C to +85°C temperature
range.
Features
• VIN Range: 2.7V to 5.5V
• VOUT Fixed or Adjustable from 0.6V to VIN
• 35μA No Load Quiescent Current
• Up to 98% Efficiency
• 600mA Max Output Current
• 1.4MHz Switching Frequency
• 120μs Soft Start
• Fast Load Transient
• Over-Temperature Protection
• Current Limit Protection
• 100% Duty Cycle Low-Dropout Operation
• <1μA Shutdown Current
• SOT23-5 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)
VIN
C2
4.7µF
U1
AAT1141
IN LX
EN
GND
OUT
L1
4.7µH
VOUT
C1
4.7µF
1141.2007.12.1.3
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SwitchRegTM
Typical Characteristics
Efficiency vs. Load
(VOUT = 3.3V; L = 6.8μH)
100
VIN = 3.6V
90
VIN = 4.2V
80
VIN = 5.0V
www.DataShe7e0t4U.com
60
50
0.1
1 10 100
Output Current (mA)
1000
Efficiency vs. Load
(VOUT = 2.5V; L = 6.8μH)
100
VIN = 2.7V
90
80 VIN = 5.0V
VIN = 4.2V
70 VIN = 3.6V
60
50
0.1
1 10 100
Output Current (mA)
1000
Efficiency vs. Load
(VOUT = 1.8V; L = 4.7μH)
100
VIN = 2.7V
90
80 VIN = 3.6V VIN = 4.2V
70
60
50
0.1
1 10 100
Output Current (mA)
1000
PRODUCT DATASHEET
AAT1141
Fast Transient 600mA Step-Down Converter
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
0
DC Regulation
(VOUT = 3.3V; L = 6.8µH)
VIN = 4.2V
VIN = 5.0V
VIN = 5.5V
100 200 300 400 500
Output Current (mA)
600
DC Regulation
(VOUT = 2.5V; L = 6.8µH)
3.0
2.0
1.0 VIN = 5.0V
0.0
-1.0 VIN = 3.0V
-2.0
VIN = 3.6V
VIN = 4.2V
-3.0
0
100 200 300 400 500 600
Output Current (mA)
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
0
DC Regulation
(VOUT = 1.8V; L = 4.7μH)
VIN = 2.7V VIN = 3.6V
VIN = 4.2V
100 200 300 400 500
Output Current (mA)
600
1141.2007.12.1.3
www.analogictech.com
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for AAT1141 electronic component. |
Information | Total 19 Pages | |
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Download | [ AAT1141.PDF Datasheet ] |
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