PRODUCT DATASHEET
AAT2552178
SystemPowerTM
Total Power Solution for Portable Applications
Typical Characteristics–Step-Down Converter
Efficiency vs. Load
(VOUT = 3.3V; L = 5.6µH)
DC Regulation
(VOUT = 3.3V; L = 5.6µH)
100
90
80
70
60
50
40
1.0
0.5
VIN = 3.6V
VIN = 5.0V
VIN = 5.0V
VIN = 4.2V
0.0
VIN = 4.2V
-0.5
-1.0
VIN = 3.6V
0.1
1
10
100
1000
1000
1000
0.1
1
10
100
1000
Output Current (mA)
Output Current (mA)
Efficiency vs. Load
(VOUT = 1.8V; L = 3.3µH)
DC Regulation
(VOUT = 1.2V; L = 1.5μH)
100
90
80
70
60
50
40
1.0
0.5
VIN = 3.6V
VIN = 2.7V
VIN = 3.6V
VIN = 5.0V
VIN = 5.0V
VIN = 4.2V
0.0
VIN = 2.7V
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 = 1.2V; L = 1.5µH)
DC Regulation
(VOUT = 1.2V; L = 1.5μH)
100
90
80
70
60
50
40
1.0
0.5
VIN = 3.6V
VIN = 3.6V
VIN = 5.0V
VIN = 2.7V
0.0
VIN = 5.0V
VIN = 2.7V
VIN = 4.2V
VIN = 4.2V
-0.5
-1.0
0.1
1
10
100
1000
0.1
1
10
100
Output Current (mA)
Output Current (mA)
w w w . a n a l o g i c t e c h . c o m
2552.2008.02.1.2
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ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
