PRODUCT DATASHEET
AAT2687
SystemPower
TM
PMIC Solution for 24V Systems with 2 High Performance Step-Down Converters
Typical Characteristics—Channel 2
LDO Input Current vs. Input Voltage
(V
EN1
= 0V; V
EN2
= V
IN2
)
100
1400
LDO Dropout Voltage vs. Temperature
Dropout Voltage (mV)
Input Current (µA)
80
60
40
20
0
1200
1000
800
600
400
200
0
-40
-15
10
35
60
85
I
OUT2
= 600mA
I
OUT2
= 500mA
I
OUT2
= 300mA
I
OUT2
= 150mA
I
OUT2
= 50mA
85°C
25°C
-40°C
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Temperature (°C)
LDO Dropout Voltage vs. Output Current
1500
1.30
1.25
LDO V
IH
and V
IL
vs. Input Voltage
Dropout Voltage (V)
1200
V
IH
and V
IL
(V)
900
600
300
0
0
100
200
300
400
500
600
1.20
1.15
1.10
1.05
1.00
85°C
25°C
-40°C
V
IH
V
IL
2.5
3
3.5
4
4.5
5
5.5
Output Current (mA)
Input Voltage (V)
LDO Output Voltage Error vs. Temperature
(V
IN2
= 3.3V; V
OUT2
= 1.8V; I
OUT2
= 600mA)
3.0
LDO Dropout Characteristic
(V
OUT2
= 1.8V)
1.84
Output Voltage Error (%)
Output Voltage (V)
2.0
1.0
0.0
-1.0
-2.0
-3.0
-50
-25
0
25
50
I
OUT2
= 0.1mA
I
OUT2
= 300mA
I
OUT2
= 600mA
1.82
1.80
1.78
1.76
1.74
1.72
1.70
1.5
2
2.5
3
3.5
I
OUT2
= 0.1mA
I
OUT2
= 50mA
I
OUT2
= 100mA
I
OUT2
= 300mA
I
OUT2
= 600mA
4
4.5
75
100
Temperature (°C)
Input Voltage (V)
2687.2008.06.1.0
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