AAT3183 Datasheet, PDF (6/16 Pages) Advanced Analogic Technologies – 300mA Inductorless Step-Down Converter

AAT3183
300mA Inductorless Step-Down Converter
Typical Characteristics
Output Voltage Ripple vs. Input Voltage
(C_IN/C_FLY = 1µF; C_OUT = 4.7µF; I_OUT = 300mA)
100
90
80
No Post Filter
70
60
50
40
30
20
100pF Post Filter
10
0
3
3.6
4.2
4.8
5.4
6
Input Voltage (V)
Output Impedance vs. Input Voltage
1.8
25°C
1.5
85°C
1.2
0.9
-40°C
0.6
2.7
2.9
3.1
3.3
3.5
3.7
3.9
4.1
Input Voltage (V)
Load Transient Response
(V_IN = 3.6V; V_OUT = 1.5V; I_OUT = 5mA to 150mA)
Line Transient
(V_IN = 3.6V to 4.2V)
1.54
0.7
1.51
6.9
1.52
0.6
1.505
6.4
1.5
0.5
1.5
5.9
1.48
0.4
1.495
5.4
1.46
0.3
1.49
4.9
1.44
0.2
1.485
4.4
1.42
0.1
1.48
3.9
1.4
0
1.475
3.4
1.38
-0.1
1.47
2.9
Time (50µs/div)
Time (500µs/div)
Output Ripple
(V_OUT = 1.5V; I_OUT = 300mA)
1.54
1.53
1.52
1.51
1.5
1.49
1.48
1.47
1.46
Time (500ns/div)
Output Ripple
(V_OUT = 1.5V; I_OUT = 150mA)
1.54
1.53
1.52
1.51
1.5
1.49
1.48
1.47
1.46
Time (500ns/div)
6
3183.2007.07.1.2