600mA Step-Down Converter
Typical Characteristics
Efficiency vs. Output Current
(V
OUT
= 2.5V; L = 2.2µH; T
A
= 25°C)
°
100
90
80
100
90
80
AAT1106
Efficiency vs. Output Current
(V
IN
= 3.6V; V
OUT
= 2.5V; T
A
= 25°C)
°
V
IN
= 2.7V
V
IN
= 4.2V
V
IN
= 3.6V
Efficiency (%)
Efficiency (%)
70
60
50
40
30
20
10
0
0.1
1
10
70
60
50
40
30
20
10
L = 10µH
L = 4.7µH
L = 2.2µH
L = 1.4µH
1
10
100
1000
100
1000
0
0.1
Output Current (mA)
Output Current (mA)
Efficiency vs. Output Current
(V
OUT
= 1.8V; L = 2.2µH; T
A
= 25°C)
°
100
90
80
100
Efficiency vs. Output Current
(V
IN
= 3.6V; V
OUT
= 1.8V; T
A
= 25°C)
°
V
IN
= 2.7V
V
IN
= 3.6V
Efficiency (%)
90
80
70
Efficiency (%)
L = 2.2µH
L = 1.4µH
70
60
50
40
30
20
10
0.1
1
10
100
1000
60
50
40
30
20
10
0.1
1
10
100
1000
L = 10µH
L = 4.7µH
V
IN
= 4.2V
Output Current (mA)
Output Current (mA)
Efficiency vs. Output Current
(V
OUT
= 1.5V; L = 2.2µH; T
A
= 25°C)
°
100
90
80
100
90
Efficiency vs. Output Current
(V
OUT
= 1.2V; L = 2.2µH; T
A
= 25°C)
°
Efficiency (%)
70
60
50
40
30
20
10
0
0.1
1
10
100
1000
Efficiency (%)
V
IN
= 2.7V
V
IN
= 4.2V
V
IN
= 3.6V
80
70
60
50
40
30
20
10
0
0.1
1
10
100
1000
V
IN
= 2.7V
V
IN
= 4.2V
V
IN
= 3.6V
Output Current (mA)
Output Current (mA)
1106.2007.07.1.0
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
