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What is AAT1120?

This electronic component, produced by the manufacturer "AAT", performs the same function as "Step-Down Converter".


AAT1120 Datasheet PDF - AAT

Part Number AAT1120
Description Step-Down Converter
Manufacturers AAT 
Logo AAT Logo 


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Total 20 Pages



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AAT1120
500mA Step-Down Converter
General Description
Features
SwitchReg
The AAT1120 SwitchReg is a 1.5MHz step-down
converter with an input voltage range of 2.7V to
5.5V and output as low as 0.6V. Its low supply
current, small size, and high switching frequency
make the AAT1120 the ideal choice for portable
applications.
The AAT1120 delivers up to 500mA of load current,
while maintaining a low 30μA no load quiescent cur-
rent. The 1.5MHz switching frequency minimizes
the size of external components, while keeping
switching losses low. The AAT1120 feedback and
control delivers excellent load regulation and tran-
sient response with a small output inductor and
capacitor.
The AAT1120 is available in a Pb-free, 8-pin, 2x2mm
STDFN package and is rated over the -40°C to
+85°C temperature range.
• VIN Range: 2.7V to 5.5V
• VOUT Range: 0.6V to VIN
• Up to 500mA Output Current
• Up to 96% Efficiency
• 30μA Typical Quiescent Current
• 1.5MHz Switching Frequency
• Soft-Start Control
• Over-Temperature and Current Limit
Protection
• 100% Duty Cycle Low-Dropout Operation
• <1μA Shutdown Current
• Small External Components
• Ultra-Small STDFN22-8 Package
• Temperature Range: -40°C to +85°C
Applications
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Bluetooth® Headsets
Cellular Phones
Digital Cameras
Handheld Instruments
Micro Hard Disk Drive
Portable Music Players
USB Devices
Typical Application
VIN
C1
4.7µF
AAT1120
VP LX
VIN
EN FB
GND PGND
VO = 1.8V
L1
3.0μH
R1
118kΩ
500mA
R2
59kΩ
C2
4.7µF
1120.2007.01.1.0
1

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AAT1120 equivalent
AAT1120
500mA Step-Down Converter
Typical Characteristics
Efficiency vs. Load
(VOUT = 3.0V; L = 4.7µH)
Load Regulation
(VOUT = 3.0V; L = 4.7µH)
100
90 VIN = 3.6V
80
70
60
50
40
0.1
1
VIN = 4.2V
VIN = 5.0V
10 100
1000
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
0.1
VIN = 3.6V
1
VIN = 5.0V
VIN = 4.2V
10 100
Output Current (mA)
Output Current (mA)
1000
Efficiency vs. Load
(VOUT = 1.8V; L = 3.3µH)
100
VIN = 3.6V
90 VIN = 2.7V
80
VIN = 4.2V
70
60
50
40
0.1
1
10 100
Output Current (mA)
1000
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
0.1
Load Regulation
(VOUT = 1.8V; L = 3.3µH)
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
1 10 100
Output Current (mA)
1000
Efficiency vs. Load
(VOUT = 1.2V; L = 1.5µH)
Load Regulation
(VOUT = 1.2V; L = 1.5µH)
100
90
VIN = 2.7V
80 VIN = 3.6V
70
2
1.5 VIN = 2.7V
1 VIN = 3.6V
0.5
0
VIN = 4.2V
60 VIN = 4.2V
50 VIN = 5.0V
-0.5
-1
-1.5 VIN = 5.0V
40
0.1
1
-2
10 100 1000
0.1
1
10 100 1000
Output Current (mA)
Output Current (mA)
1120.2007.01.1.0
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for AAT1120 electronic component.


Information Total 20 Pages
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