PRODUCT DATASHEET
AAT2688
TM
SystemPower
4.5A PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters
Typical Characteristics–Channel 2
LDO Input Current vs. Input Voltage
LDO Dropout Voltage vs. Temperature
(VEN1 = 0V; VEN2 = VIN2
)
100
80
60
40
20
0
1400
1200
1000
800
600
400
200
0
IOUT2 = 600mA
IOUT2 = 500mA
IOUT2 = 300mA
IOUT2 = 150mA
IOUT2 = 50mA
85°C
25°C
-40°C
-40
-15
10
35
60
85
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Temperature (°C)
LDO Dropout Voltage vs. Output Current
LDO VIH and VIL vs. Input Voltage
1500
1200
900
1.30
1.25
1.20
1.15
1.10
1.05
1.00
600
85°C
300
25°C
VIH
VIL
-40°C
0
2.5
3
3.5
4
4.5
5
5.5
0
100
200
300
400
500
600
Output Current (mA)
Input Voltage (V)
LDO Output Voltage Error vs. Temperature
LDO Dropout Characteristics
(VOUT2 = 1.8V)
(VIN2 = 3.3V; VOUT2 = 1.8V; IOUT2 = 600mA)
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
3.0
IOUT2 = 0.1mA
IOUT2 = 300mA
IOUT2 = 600mA
2.0
1.0
0.0
IOUT2 = 0.1mA
IOUT2 = 50mA
-1.0
-2.0
-3.0
IOUT2 = 100mA
IOUT2 = 300mA
IOUT2 = 600mA
1.5
2
2.5
3
3.5
4 4.5
-50
-25
0
25
50
75
100
Temperature (°C)
Input Voltage (V)
w w w . a n a l o g i c t e c h . c o m
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2688.2008.06.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
