AAT2557
500mA Battery Charger and 300mA
LDO Regulator for Portable Systems
Typical Characteristics – LDO Regulator
Dropout Voltage vs. Temperature
Dropout Characteristics
3.2
3.0
2.8
2.6
2.4
2.2
2.0
540
480
420
360
300
240
180
120
60
IL = 300mA
IOUT = 0mA
IL = 100mA
IL = 150mA
IOUT = 300mA
IOUT = 150mA
IOUT = 100mA
IOUT = 50mA
IOUT = 10mA
IL = 50mA
0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120
2.7
2.8
2.9
3.0
3.1
3.2
3.3
Temperature (°C)
Input Voltage (V)
Dropout Voltage vs. Output Current
Ground Current vs. Input Voltage
90
80
70
60
50
40
30
20
10
0
500
450
400
350
300
250
200
150
100
50
IOUT=300mA
85°C
IOUT=150mA
IOUT=50mA
25°C
IOUT=0mA
IOUT=10mA
-40°C
0
0
50
100
150
200
250
300
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Output Current (mA)
Quiescent Current vs. Temperature
Output Voltage vs. Temperature
100
90
80
70
60
50
40
30
20
10
0
1.203
1.202
1.201
1.200
1.199
1.198
1.197
1.196
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Temperature (°C)
Temperature (°C)
2557.2007.06.1.0
9
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
