PRODUCT DATASHEET
AAT2552178
SystemPowerTM
Total Power Solution for Portable Applications
Typical Characteristics–Step-Down Converter
Load Transient Response
(10mA to 300mA; VIN = 3.6V; VOUT = 1.8V; COUT = 4.7µF; C = 100pF)
Line Transient Response
(VOUT = 1.8V @ 150mA, CFF = 100pF)
2.0
1.9
1.8
1.7
1.6
1.90
1.85
1.80
1.75
VOUT
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
20
0
1.81
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)
w w w . a n a l o g i c t e c h . c o m
2552.2008.02.1.2
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