PRODUCT DATASHEET
AAT2789
SystemPowerTM
Low Noise, High Frequency Dual Step-Down Converter
Typical Characteristics – Channel 2
Output Ripple
(VOUT = 1.8V; VIN = 3.6V; IOUT = 1mA; CFF = 0pF)
Output Ripple
(VOUT = 1.8V; VIN = 3.6V; IOUT = 400mA; CFF = 0pF)
0.02
1.4
1.2
1
0.02
0.01
0
0.35
0.3
0.01
0
0.25
0.2
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
0.8
0.6
0.4
0.2
0
0.15
0.1
0.05
0
-0.05
-0.2
Time (10µs/div)
Time (10µs/div)
Soft Start
(VIN = 3.6V; VOUT = 1.8V; IOUT = 400mA)
4
3
2
1
0
0.5
0
-0.5
Time (100µs/div)
w w w . a n a l o g i c t e c h . c o m
12
2789.2008.03.1.0