AAT2552
Total Power Solution for Portable Applications
Typical Characteristics–Step-Down Converter
Load Transient Response
Line Transient Response
(VOUT = 1.8V @ 150mA, CFF = 100pF)
(10mA to 300mA; VIN = 3.6V; VOUT = 1.8V; COUT = 4.7µF; C = 100pF)
2.0
1.90
1.85
1.80
1.75
1.9
VOUT
1.8
1.7
1.6
IOUT
300mA
10mA
4.6
4.1
3.6
3.1
0.2
0.0
-0.2
ILX
Time (20µs/div)
Time (25µs/div)
Output Voltage Ripple
(VIN = 3.6V; VOUT = 1.8V; IOUT = 300mA)
Output Voltage Ripple
(VIN = 3.6V; VOUT = 1.8V; IOUT = 1mA)
40
1.81
20
0
1.80
1.79
-20
0.4
0.05
0.3
0.2
0.1
0.00
-0.05
-0.10
Time (0.2µs/div)
Time (5µs/div)
12
2552.2007.04.1.0