AAT1155 Datasheet, PDF (5/17 Pages) Advanced Analogic Technologies – 1MHz 2.5A Step-Down DC/DC Converter

AAT1155
1MHz 2.5A Step-Down DC/DC Converter
Typical Characteristics
R_DS(ON) vs. Temperature
90
2.7V
80
3.6V
4.2V
70
60
5.0V 5.5V
50
40
-20
0
20
40
60
80
100
120
Temperature (°C)
Oscillator Frequency Variation
vs. Input Voltage
(V_OUT = 3.3V)
0.5
0.25
0
-0.25
-0.5
3.5
4
4.5
5
5.5
Input Voltage (V)
R_DS(ON) vs. Input Voltage
(I_DS = 1A)
80
75
70
65
60
55
50
45
40
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Oscillator Frequency Variation vs. Temperature
(V_IN = 5V)
1
0
-1
-2
-3
-4
-20
0
20
40
60
80
100
Temperature (°C)
Enable Threshold vs. Input Voltage
1.2
1.1
EN(H)
1
0.9
0.8
0.7 EN(L)
0.6
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Output Voltage Variation vs. Temperature
(I_OUT = 2A; V_O = 3.3V)
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-20
0
20
40
60
80
100
Temperature (°C)
1155.2005.11.1.6
5