AAT3183_08 Datasheet, PDF (6/15 Pages) Advanced Analogic Technologies – 300mA Inductorless Step-Down Converter

ChargePump^TM
Typical Characteristics
Output Voltage Error vs. Temperature
(V_IN = 3.6V; V_OUT = 1.5V; I_OUT = 150mA)
8.0
6.0
4.0
2.0
0.0
-2.0
-4.0
-6.0
-8.0
-40 -25 -10 5
20 35 50 65 80 95
Temperature (°C)
No Load Quiescent Current vs. Input Voltage
(V_OUT = 1.5V)
100
90
80
70
60
25°C
85°C
50
40
30
20
10
-40°C
0
3.1
3.5
3.9
4.3
4.7
5.1
5.5
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)
PRODUCT DATASHEET
AAT3183
300mA Inductorless Step-Down Converter
Efficiency vs. Input Voltage
(V_OUT = 1.5V)
100
90
50mA
80
70 _300mA
60
50
40
30
20
10
0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
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)
Load Transient Response
(V_IN = 3.6V; V_OUT = 1.5V; I_OUT = 5mA to 150mA)
1.54
0.7
1.52
0.6
1.5
0.5
1.48
0.4
1.46
0.3
1.44
0.2
1.42
0.1
1.4
0
1.38
-0.1
Time (50µs/div)
6
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3183.2008.02.1.3