PRODUCT DATASHEET
AAT2503178
SystemPowerTM
Adjustable 3-Channel Regulator
Typical Characteristics—Step-Down Converter
Line Transient
(VOUT = 1.8V; IOUT = 800mA; VIN = 3.6V to 4.2V)
Load Transient
(VIN = 3.6V; VOUT = 1.8V; IOUT = 300mA to 650mA)
2.2
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
2.0
VOUT
1.8
1.6
IOUT
650mA
1.4
300mA
1.2
1.0
0.8
0.6
0.6
0.3
0.0
IINDUCTOR
Time (20µs/div)
Time (20µs/div)
Light Load Output Ripple
(VIN = 2.7V; VOUT = 1.8V; IOUT = 1mA)
Heavy Load Output Ripple
(VIN = 3.6V; VOUT = 1.8V; IOUT = 800mA)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
20
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
20
VOUT
10
10
VOUT
0
0
-10
-20
-30
-40
-50
-60
-10
-20
-30
-40
-50
-60
IINDUCTOR
IINDUCTOR
Time (10µs/div)
Time (200ms/div)
w w w . a n a l o g i c t e c h . c o m
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2503.2008.02.1.4
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
