PRODUCT DATASHEET
AAT2503178
SystemPowerTM
Adjustable 3-Channel Regulator
Typical Characteristics—Step-Down Converter
Turn Off
(VIN = 3.6V; VOUT = 1.8V; IOUT = 800mA)
Line Regulation
(VOUT = 1.8V; VMODE/SYNC = VIN)
6.0
4.0
2.0
0.0
1.2
0.9
ENABLE
0.6
0.3
IL = 800mA
VOUT (1V/div)
1.8V
0.0
-0.3
-0.6
-0.9
-1.2
1.0
0.5
0.0
-0.5
IL = 10mA
0V
IL = 100mA
IINDUCTOR
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Time (100µs/div)
Input Voltage (V)
Line Regulation
(VOUT = 0.9V; VMODE/SYNC = VIN)
No Load Quiescent Current vs. VIN
(VOUT = 1.8V; L = 2.2µH)
1.2
0.9
65
60
55
50
45
40
35
30
25
0.6
TA = 85°C
IL = 800mA
IL = 650mA
0.3
0.0
TA = 25°C
-0.3
-0.6
-0.9
-1.2
TA = -40°C
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Input Voltage (V)
No Load Quiescent Current vs. VIN
(VOUT = 0.9V; L = 1µH)
Output Voltage Error vs. Temperature
(VIN = 3.6V; VOUT = 0.9V; IOUT = 800mA)
50
45
40
35
30
25
20
2.0
1.5
VIN = 1.8V
VIN = 2.5V
1.0
TA = 85°C
0.5
0.0
TA = 25°C
-0.5
-1.0
-1.5
-2.0
TA = -40°C
VOUT = 0.9V
-40
-20
0
20
40
60
80
100
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Temperature (°C)
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2503.2008.02.1.4
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ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
