AAT1112 Datasheet, PDF (5/19 Pages) Advanced Analogic Technologies – 1.5A, 1.4MHz Step-Down Converter

Typical Characteristics
Efficiency vs. Output Current
(PFM Mode; V_OUT = 3.3V)
100
V_IN = 3.6V
90
80
V_IN = 4.2V V_IN = 5.0V
70
60
50
40
0.1
1
10
100
1000
Output Current (mA)
10000
Efficiency vs. Output Current
(PWM Mode; V_OUT = 3.3V)
100
V_IN = 3.6V
80
V_IN = 5.0V
60
V_IN = 4.2V
40
20
0
1.0
10
100
1000
Output Current (mA)
10000
Efficiency vs. Output Current
(PFM Mode; V_OUT = 2.5V)
100
V_IN = 2.7V
90
80
V_IN = 3.6V ^{VIN = 4.2V}
70
60
50
0.1
1
10
100
1000
Output Current (mA)
10000
DATA SHEET
AAT1112
1.5A, 1.4MHz Step-Down Converter
Load Regulation
(PFM Mode; V_OUT = 3.3V)
0.50
0.25 ^{VIN = 3.6V VIN = 4.2V}
0.00
-0.25
V_IN = 5.0V
-0.50
0.1
1
10
100
1000
Output Current (mA)
10000
0.50
0.25
0.00
-0.25
-0.50
0.1
Load Regulation
(PWM Mode; V_OUT = 3.3V)
V_IN = 3.6V
V_IN = 5.0V
V_IN = 4.2V
1
10
100
1000
Output Current (mA)
10000
0.50
0.25
0.00
-0.25
-0.50
0.1
Load Regulation
(PFM Mode; V_OUT = 2.5V)
V_IN = 2.7V V_IN = 3.6V
V_IN = 4.2V
1
10
100
1000
Output Current (mA)
10000
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