AAT2522 Datasheet, PDF (6/19 Pages) Skyworks Solutions Inc. – Dual High-Current, Low-Noise, Step-Down Regulator

DATA SHEET
AAT2522
Dual High-Current, Low-Noise, Step-Down Regulator
Typical Characteristics
Step-Down Converter Efficiency vs. Load
(VOUT = 3.3V; L = 3.3µH)
100
90
80
70
60
50
40
30
20
0.1
1
VIN = 3.6V
V_IN = 4.2V
VIN = 5.0V
V_IN = 5.5V
10
100
1000
10000
Output Current (mA)
Step-Down Converter DC Regulation
(VOUT = 3.3V; L = 3.3µH)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
VIN = 4.2V
-1.5
VIN = 5.0V
VIN = 5.5V
-2.0
0.1
1
10
100
1000
10000
Output Current (mA)
Step-Down Converter Line Regulation
(V_OUT = 1.2V; L = 1.2µH)
2.0
1.5
1.0
0.5
0.0
-0.5
IOUT = 0.10mA
IOUT = 100mA
-1.0
IOUT = 1A
IOUT = 1.5A
-1.5
IOUT = 2A
IOUT = 3A
-2.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Step-Down Converter Line Regulation
(V_OUT = 1.8V; L = 1.8µH)
2.0
IOUT = 0.10mA
1.5
IOUT = 100mA
IOUT = 1A
1.0
IOUT = 1.5A
0.5
IOUT = 2A
IOUT = 3A
0.0
-0.5
-1.0
-1.5
-2.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Step-Down Converter Output Voltage Error
vs. Temperature
(VIN = 3.6V; VOUT = 1.2V)
2.0
1.5
IOUT = 1A
I_OUT = 1.5A
1.0
I_OUT = 2A
0.5
I_OUT = 3A
0.0
-0.5
-1.0
-1.5
-2.0
-50
-25
0
25
50
75
100
Temperature (°C)
Step-Down Converter Output Voltage Error
vs. Temperature
(VIN = 3.6V; VOUT = 1.8V)
2.0
1.5
IOUT = 1A
I_OUT = 1.5A
1.0
I_OUT = 3A
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-50
-25
0
25
50
75
100
Temperature (°C)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202032A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012