AAT2500M Datasheet, PDF (6/22 Pages) Advanced Analogic Technologies – 400mA Step-Down Converter and 300mA LDO

AAT2500M
400mA Step-Down Converter and 300mA LDO
Typical Characteristics
LDO Line Transient Response
(V_IN = 4V to 5V; V_OUT = 3.3V; I_OUT = 300mA; C_OUT = 4.7µF)
5
4
3.5
3.3
3.1
Time (40µs/div)
LDO Load Transient Response
(1mA to 300mA; V_IN = 5V; V_OUT = 3.3V; C_OUT = 4.7µF)
3.7
3.5
3.3
3.1
2.9
300mA
0.4
0.2
1mA
0.0
-0.2
Time (100µs/div)
LDO V_IH and V_IL vs. Input Voltage
1.2
1.1
V_IH
1.0
0.9
V_IL
0.8
0.7
0.6
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Step-Down Converter Switching
Frequency vs. Input Voltage
(I_OUT = 400mA)
3
2
1 _{VOUT = 1.2V}
0
V_OUT = 1.8V
-1
-2
-3
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 = 5V; V_OUT = 1.8V)
1.9
1.8
1.7
1.6
1.5
-40
-20
0
20
40
60
Temperature (°C)
80
100
6
2500M.2007.06.1.0