Typical Characteristics
RDS(ON) vs. Temperature
90
VIN = 2.7V
80
VIN = 3.6V
70
VIN = 4.2V
60
VIN = 5.5V
50
VIN = 5V
40
-20
0
20
40
60
80
100
120
Temperature (°C)
RDS(ON) vs. VIN, IDS = 1A
70
65
60
55
50
45
40
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
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)
AAT1154
1MHz 3A Buck DC/DC Converter
Oscillator Frequency Variation vs.
Supply Voltage
0.5
0.25
0
-0.25
-0.5
3.5
4
4.5
5
5.5
Input Voltage (V)
Oscillator Frequency Variation vs. Temperature
VIN = 5V
1
0
-1
-2
-3
-4
-20
0
20
40
60
80
100
Temperature (°C)
Output Voltage vs. Temperature
IOUT=2A
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-20
0
20
40
60
80
100
Temperature (°C)
1154.2003.08.0.91
5