AAT1142 Datasheet, PDF (6/22 Pages) Advanced Analogic Technologies – 800mA Voltage-Scaling Step-Down Converter

AAT1142
800mA Voltage-Scaling Step-Down Converter
Typical Characteristics
Efficiency vs. Load
(V_OUT = 0.9V)
100
90
V_IN = 3.6V
80 ^VIN ^{= 4.2V}
V_IN = 2.7V
70
60
50
PWM Only
40
V_IN = 5.0V
Mode
30
20
0
1
10
100
1000
Output Current (mA)
2.0
1.0
0.0
-1.0
-2.0
0
DC Regulation
(V_OUT = 0.9V)
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V V_IN = 5.0V
1
10
100
1000
Output Current (mA)
Efficiency vs. Load
(V_OUT = 1.0V)
100
90
V_IN = 3.6V
80 ^{VIN = 4.2V}
V_IN = 2.7V
70
60
50
PWM Only
40
V_IN = 5.0V
Mode
30
20
0
1
10
100
1000
Output Current (mA)
2.0
1.0
0.0
-1.0
-2.0
0
DC Regulation
(V_OUT = 1.0V)
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V V_IN = 5.0V
1
10
100
1000
Output Current (mA)
Efficiency vs. Load
(V_OUT = 1.2V)
100
V_IN = 3.6V
90
80 ^{VIN = 4.2V}
V_IN = 2.7V
70
60
50
40
V_IN = 5.0V
PWM Only
Mode
30
20
0
1
10
100
1000
Output Current (mA)
2.0
1.0
0.0
-1.0
-2.0
0
DC Regulation
(V_OUT = 1.2V)
V_IN = 2.7V V_IN = 3.6V
V_IN = 4.2V V_IN = 5.0V
1
10
100
1000
Output Current (mA)
6
1142.2006.07.1.0