AAT2505
Dual Channel, Step-Down
Converter/Linear Regulator
Typical Characteristics
Unless otherwise noted, VIN = 5V, TA = 25°C.
Step-Down Converter Soft Start
(VIN = 3.6V; VOUT = 1.8V; 400mA;
EN = VIN; ENLDO = GND)
Step-Down Converter Output Ripple
(VIN = 3.6V; VOUT = 1.8V; 400mA;
EN = VIN; ENLDO = GND)
40
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
5.0
4.0
1.6
VEN
VO
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
20
3.0
0
2.0
-20
-40
-60
-80
-100
-120
1.0
0.0
-1.0
-2.0
-3.0
-4.0
-5.0
IL
Time (250ns/div)
Time (100μμs/div)
2505.2006.06.1.1
11