PRODUCT DATASHEET
AAT2783
SystemPowerTM
Triple Output PMIC: Dual Buck with Low-VIN LDO
Typical Characteristics—Buck Converter 2
Step-Down Converter 2 Output Ripple
Step-Down Converter 2 Output Ripple
(VIN = 3.3V; VOUT2 = 1.7V; IOUT2 = 400mA)
(VIN = 3.3V; VOUT2 = 1.7V; IOUT2 = 1mA)
1.71
1.70
1.69
1.71
1.70
1.69
0.6
0.4
0.2
0.0
0.2
Time (500ns/div)
Time (10µs/div)
Step-Down Converter 2 Line Transient Response
Step-Down Converter 2 Load Transient Response
(IOUT2 = 0.3A to 0.4A; VIN = 3.3V; VOUT2 = 1.7V;
COUT2 = 4.7µF; CFF = 100pF)
(VIN = 3V to 4V; VOUT2 = 1.7V; IOUT2 = 0.4A; COUT2 = 10µF)
5
0.4A
4
3
0.3A
2
1.75
1.9
1.8
1.7
1.6
1.70
1.65
0.6
0.4
0.2
0.0
Time (100µs/div)
Time (100µs/div)
Step-Down Converter 2 Soft Start
(VIN = 3.3V; VOUT2 = 1.7V; IOUT2 = 500mA; CFF = 100pF)
4
3
2
1
0
1.0
0.5
0.0
Time (50µs/div)
w w w . a n a l o g i c t e c h . c o m
10
2783.2008.03.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
