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AAT2505 Datasheet, PDF (8/26 Pages) Advanced Analogic Technologies – Dual Channel, Step-Down Converter/Linear Regulator
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Typical Characteristics
Unless otherwise noted, VIN = 5V, TA = 25°C.
LDO Over-Current Protection
(EN = GND; ENLDO = VIN)
1200
1000
800
600
400
200
0
-200
Time (50ms/div)
AAT2505
Dual Channel, Step-Down
Converter/Linear Regulator
LDO ENLDO vs. VIN
1.250
1.225
1.200
1.175
VIH
1.150
1.125
1.100
VIL
1.075
1.050
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
Step-Down Converter Efficiency vs. Load
(VOUT = 3.3V; L = 10μH; ENLDO = GND)
100
90
VIN = 3.9V
80
VIN = 4.2V
70
60
0.1
1
10
100
1000
Output Current (mA)
Step-Down Converter DC Regulation
(VOUT = 3.3V; L = 6.8µH; ENLDO = GND)
1.0
0.5
VIN = 5.0V
0.0
-0.5
VIN = 4.2V
-1.0
0.1
1
10
100
1000
Output Current (mA)
Step-Down Converter Efficiency vs. Load
(VOUT = 2.5V; L = 10μH; ENLDO = GND)
100
VIN = 3.3V
90
VIN = 3.0V VIN = 3.6V
80
70
60
0.1
1
10
100
1000
Output Current (mA)
8
Step-Down Converter DC Regulation
(VOUT = 2.5V; L = 6.8µH; ENLDO = GND)
1.0
0.5
0.0
-0.5
-1.0
0.1
VIN = 5.0V
VIN = 4.2V
VIN = 3.6V
VIN = 3.0V
1
10
100
1000
Output Current (mA)
2505.2006.06.1.1
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