PRODUCT DATASHEET
AAT2689
TM
SystemPower PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters
Typical Characteristics
Step-Down Converter Input Current
vs. Input Voltage
LDO Dropout Voltage vs. Temperature
(VEN1 = VIN1
)
1400
1200
1000
800
600
400
200
0
0.70
0.65
0.60
0.55
0.50
0.45
0.40
IOUT2 = 600mA
IOUT2 = 500mA
IOUT2 = 300mA
IOUT2 = 150mA
IOUT2 = 50mA
85°C
25°C
-40°C
-40
-20
0
20
40
60
80
100
6
9
12
15
18
21
24
Input Voltage (V)
Temperature (°C)
LDO Dropout Characteristics
LDO Dropout Voltage vs. Output Current
(VOUT2 = 1.8V)
1.84
1500
85°C
25°C
-40°C
1.82
1.80
1.78
1.76
1.74
1.72
1.70
1200
900
600
300
0
IOUT2 = 0.1mA
I
OUT2 = 10mA
OUT2 = 50mA
I
IOUT2 = 100mA
IOUT2 = 300mA
IOUT2 = 600mA
0
100
200
300
400
500
600
1.5
2
2.5
3
3.5
4 4.5
Input Voltage (V)
Output Current (mA)
LDO Input Current vs. Input Voltage
LDO VIH and VIL vs. Input Voltage
(VEN1 = 0V; VEN2 = VIN2
)
100
80
60
40
20
0
1.30
1.25
1.20
1.15
1.10
1.05
1.00
85°C
25°C
-40°C
VIH
VIL
2
2.5
3
3.5
4
4.5
5
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Input Voltage (V)
w w w . a n a l o g i c t e c h . c o m
2689.2008.06.1.0
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ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
