AAT2120 Datasheet, PDF (5/19 Pages) Advanced Analogic Technologies – 500mA Low Noise Step-Down Converter

Typical Characteristics
Efficiency vs. Load
(V_OUT = 3.0V; L = 4.7µH)
100
V_IN = 3.6V
90
80
V_IN = 4.2V
70
60
V_IN = 5.0V
50
40
0.1
1
10
100
1000
Output Current (mA)
Efficiency vs. Load
(V_OUT = 1.8V; L = 3.3µH)
100
V_IN = 2.7V
90
V_IN = 3.6V
80
70
V_IN = 4.2V
60
50
40
0.1
1
10
100
1000
Output Current (mA)
Efficiency vs. Load
(V_OUT = 1.2V; L = 1.5µH)
100
90
V_IN = 2.7V
80 V_IN = 3.6V
70
60
50
V_IN = 4.2V
V_IN = 5.0V
40
0.1
1
10
100
1000
Output Current (mA)
DATA SHEET
AAT2120
500mA Low-Noise, Step-Down Converter
Load Regulation
(V_OUT = 3.0V; L = 4.7µH)
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
0.1
V_IN = 3.6V
1
V_IN = 5.0V
V_IN = 4.2V
10
100
1000
Output Current (mA)
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
0.1
Load Regulation
(V_OUT = 1.8V; L = 3.3µH)
V_IN = 4.2V
V_IN = 3.6V
V_IN = 2.7V
1
10
100
1000
Output Current (mA)
Load Regulation
(V_OUT = 1.2V; L = 1.5µH)
1.0
0.8
V_IN = 2.7V
0.6
0.4 ^VIN ^{= 3.6V}
0.2
0.0
-0.2
-0.4
-0.6
V_IN = 4.2V
-0.8
-1.0
0.1
1
10
V_IN = 5.0V
100
Output Current (mA)
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202005A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 24, 2012
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