PRODUCT DATASHEET
AAT1130
TM
SwitchReg
2.5MHz 500mA Step-Down DC/DC Converter
Typical Characteristics
Efficiency vs. Load Current
Output Voltage Error vs. Load Current
(VOUT = 1V)
(VOUT = 1V)
100
90
80
70
60
50
40
2
VIN = 2.7V
1.5
VIN = 3.6V
1
VIN = 4.2V
0.5
VIN = 5V
0
VIN = 5.5V
-0.5
-1
VIN = 2.7V
VIN = 3.6V
30
20
10
0
-1.5
-2
V
IN = 4.2V
VIN = 5V
VIN = 5.5V
-2.5
-3
0.0001
0.0001
0.001
0.01
0.1
1
5.7
1
0.001
0.01
0.1
1
Load Current (A)
Load Current (A)
Line Regulation
Efficiency vs. Load Current
(VOUT = 1V)
(VOUT = 1.8V)
100
90
80
70
60
50
40
30
20
10
0
1
0.75
0.5
IOUT = 1mA
IOUT = 10mA
IOUT = 100mA
IOUT = 300mA
IOUT = 500mA
0.25
0
VIN = 2.7V
-0.25
-0.5
-0.75
-1
VIN = 3.6V
VIN = 4.2V
VIN = 5V
VIN = 5.5V
0.0001
0.001
0.01
0.1
1
2.7
3.2
3.7
4.2
4.7
5.2
Input Voltage (V)
Load Current (A)
Output Voltage Error vs. Load Current
Line Regulation
(VOUT = 1.8V)
(VOUT = 1.8V)
1
0.75
0.5
1
0.5
0
IOUT = 1mA
IOUT = 10mA
IOUT = 100mA
IOUT = 300mA
0.25
0
-0.5
-1
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
VIN = 5V
-0.25
-0.5
-0.75
-1
-1.5
-2
-2.5
-3
VIN = 5.5V
0.0001
0.001
0.01
0.1
2.7
3.2
3.7
4.2
4.7
5.2
5.7
Load Current (A)
Input Voltage (V)
w w w . a n a l o g i c t e c h . c o m
1130.2008.08.1.1
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
