AAT2689 Datasheet, PDF (8/20 Pages) Advanced Analogic Technologies – PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters

PRODUCT DATASHEET
AAT2689
SystemPower^TM PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters
Typical Characteristics
LDO Turn-Off Response Time
(V_IN2 = 3.3V; V_EN2 = 3.3V; V_OUT2 = 1.8V; I_OUT2 = 600mA)
4
3
2
1
0
2.0
1.0
0.0
-1.0
Time (5µs/div)
LDO Turn-On Time from Enable
(V_IN2 = 3.3V; V_EN2 = 3.3V; V_OUT2 = 1.8V; I_OUT2 = 600mA)
4
3
2
1
0
3
2
1
0
Time (5µs/div)
LDO Output Voltage Error vs. Temperature
(V_IN2 = 3.3V; V_OUT2 = 1.8V)
3.0
IOUT2 = 0.1mA
2.0
IOUT2 = 300mA
I_OUT2 = 600mA
1.0
0.0
-1.0
-2.0
-3.0
-50
-25
0
25
50
75
100
Temperature (°C)
LDO Load Transient Response
(I_OUT2 = 0.3A to 0.6A; V_IN2 = 3.3V; V_OUT2 = 1.8V; C_OUT2 = 2.2µF)
0.7
0.6
0.5
0.4
0.3
1.90
1.85
1.80
1.75
Time (40µs/div)
LDO Load Transient Response
(I_OUT2 = 0.06A to 0.6A; V_IN2 = 3.3V; V_OUT2 = 1.8V; C_OUT2 = 2.2µF)
0.8
0.6
0.6A
0.4
0.2
0.0
0.06A
1.90
1.80
1.70
1.60
Time (40µs/div)
LDO Line Transient Response
(V_IN2 = 3V to 4V; V_OUT2 = 1.8V; I_OUT2 = 600mA; C_OUT2 = 2.2µF)
5
VIN
4
3
2
VOUT
1.85
1.80
1.75
1.70
Time (200µs/div)
8
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2689.2008.06.1.0