AAT1121
1.5MHz, 250mA Step-Down Converter
Typical Characteristics
Efficiency vs. Load
(VOUT = 1.2V; L = 1.5µH)
DC Load Regulation
(VOUT = 1.2V; L = 1.5µH)
100
1.0
0.5
VIN = 2.7V
90
VIN = 3.6V
80
VIN = 3.6V
70
0.0
VIN = 4.2V
60
VIN = 4.2V
VIN = 2.7V
50
VIN = 5.0V
-0.5
-1.0
40
30
0.1
1
10
100
1000
0.1
1
10
100
1000
1000
1000
Output Current (mA)
Output Current (mA)
Efficiency vs. Load
(VOUT = 1.8V; L = 3.3µH)
DC Load Regulation
(VOUT = 1.8V; L = 3.3µH)
100
90
80
70
60
50
40
1.0
0.5
VIN = 2.7V
VIN = 3.6V
VIN = 3.6V
0.0
VIN = 2.7V
VIN = 4.2V
VIN = 4.2V
-0.5
-1.0
0.1
1
10
100
0.1
1
10
100
1000
Output Current (mA)
Output Current (mA)
Efficiency vs. Load
(VOUT = 3.0V; L = 4.7µH)
DC Load Regulation
(VOUT = 3.0V; L = 4.7µH)
100
90
80
70
60
50
40
1.0
0.5
VIN = 3.6V
VIN = 4.2V
VIN = 3.6V
VIN = 4.2V
0.0
VIN = 5.0V
VIN = 5.0V
-0.5
-1.0
0.1
1
10
100
0.1
1
10
100
1000
Output Current (mA)
Output Current (mA)
1121.2006.04.1.0
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
