AAT2506 Datasheet, PDF (9/26 Pages) Advanced Analogic Technologies – 1MHz Step-Down Converter/LDO Regulator

AAT2506
1MHz Step-Down Converter/LDO Regulator
Typical Characteristics
Unless otherwise noted, V_IN = 5V, T_A = 25°C.
Step-Down Converter Efficiency vs. Load
(V_OUT = 1.5V; L = 4.7µH; ENLDO = GND)
100
V_IN = 2.7V
90
V_IN = 3.6V
80
V_IN = 4.2V
70
60
50
0.1
1
10
100
1000
Output Current (mA)
Step-Down Converter DC Regulation
(V_OUT = 1.5V; L = 4.7µH; ENLDO = GND)
3.0
2.0 V_IN = 4.2V
1.0
V_IN = 3.6V
0.0
-1.0 ^VIN ^{= 2.7V}
-2.0
-3.0
0.1
1
10
100
1000
Output Current (mA)
Step-Down Converter
Frequency vs. Input Voltage
(V_OUT = 1.8V; EN = V_IN; ENLDO = GND)
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Step-Down Converter
Switching Frequency vs. Temperature
(V_IN = 3.6V; V_O = 1.5V; EN = V_IN; ENLDO = GND)
0.20
0.10
0.00
-0.10
-0.20
-40
-20
0
20
40
60
80
100
Temperature (°C)
2506.2005.12.1.0
Step-Down Converter
Output Voltage Error vs. Temperature
(V_IN = 3.6V; V_O = 1.5V; EN = V_IN; ENLDO = GND)
2.0
1.0
0.0
-1.0
-2.0
-40
-20
0
20
40
60
Temperature (°C)
80
100
Step-Down Converter
Input Current vs. Input Voltage
(V_O = 1.8V; EN = V_IN; ENLDO = GND)
35
85°C
30
25°C
25
20
-40°C
15
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
9