PRODUCT DATASHEET
AAT3183
ChargePump
TM
300mA Inductorless Step-Down Converter
Typical Characteristics
Line Transient
(V
IN
= 3.6V to 4.2V)
1.51
6.9
6.4
5.9
5.4
4.9
4.4
3.9
3.4
2.9
1.54
1.53
Output Ripple
(V
IN
= 3.6V; V
OUT
= 1.5V; I
OUT
= 300mA)
Input Voltage (bottom) (V)
Output Voltage (top) (V)
1.505
1.5
1.495
1.49
1.485
1.48
1.475
1.47
Output Ripple (V)
1.52
1.51
1.5
1.49
1.48
1.47
1.46
Time (500µs/div)
Time (500ns/div)
Output Ripple
(V
IN
= 3.6V; V
OUT
= 1.5V; I
OUT
= 150mA)
1.54
2
Soft Start
(V
IN
= 3.6V; I
OUT
= 150mA)
3.5
3
2.5
2
1.5
1
0.5
0
-0.5
Output Voltage (bottom) (V)
Enable Voltage (top) (V)
Time (500ns/div)
1.53
1.5
1
0.5
0
-0.5
-1
-1.5
-2
Output Ripple (V)
1.52
1.51
1.5
1.49
1.48
1.47
1.46
Time (50µs/div)
Short Circuit
(V
IN
= 3.6V; V
OUT
= 1.5V)
2.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
Load Current (bottom) (A)
Output Voltage (top) (V)
1.50
1.00
0.50
0.00
-0.50
-1.00
-1.50
-2.00
Time (100µs/div)
3183.2008.02.1.3
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