AAT1110_06 Datasheet, PDF (6/19 Pages) Advanced Analogic Technologies – Fast Transient 800mA Step-Down Converter

AAT1110
Fast Transient 800mA Step-Down Converter
Typical Characteristics
Soft Start
(V_IN = 3.6V; V_OUT = 1.8V; I_OUT = 800mA)
5.0
1.8
4.0
1.6
3.0
1.4
2.0
1.2
1.0
1.0
0.0
0.8
-1.0
0.6
-2.0
0.4
-3.0
0.2
-4.0
0.0
-5.0
-0.2
Time (100μs/div)
Line Regulation
(V_OUT = 1.8V)
0.40
0.30
0.20
I_OUT = 400mA
0.10
I_OUT = 800mA
0.00
-0.10
-0.20
-0.30
I_OUT = 1mA
I_OUT = 10mA
-0.40
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Output Voltage Error vs. Temperature
(V_IN = 3.6V; V_O = 1.8V; I_OUT = 400mA)
2.0
1.0
0.0
-1.0
-2.0
-40
-20
0
20
40
60
Temperature (°C)
80
100
Switching Frequency vs. Temperature
(V_IN = 3.6V; V_OUT = 1.8V)
15.0
12.0
9.0
6.0
3.0
0.0
-3.0
-6.0
-9.0
-12.0
-15.0
-40
-20
0
20
40
60
80
100
Temperature (°C)
Frequency vs. Input Voltage
(I_OUT = 800mA)
2.0
V_OUT = 1.8V
1.0
V_OUT = 2.5V
0.0
-1.0
-2.0
-3.0
V_OUT = 3.3V
-4.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
No Load Quiescent Current vs. Input Voltage
50
45
40
35 _85°C 25°C
30
25
20
15 ^-40°C
10
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
6
1110.2006.04.1.0