AAT1155
1MHz 2.5A Step-Down DC/DC Converter
Typical Characteristics
R
DS(ON)
vs. Temperature
90
Oscillator Frequency Variation
vs. Input Voltage
(V
OUT
= 3.3V)
0.5
2.7V
80
3.6V
4.2V
Variation (%)
120
R
DS(ON)
(mΩ)
0.25
70
60
0
5.0V
50
40
-20
0
20
40
60
80
5.5V
-0.25
100
-0.5
3.5
4
4.5
5
5.5
Temperature (°C)
Input Voltage (V)
R
DS(ON)
vs. Input Voltage
(I
DS
= 1A)
80
Oscillator Frequency Variation vs. Temperature
(V
IN
= 5V)
1
75
R
DS(ON)
(mΩ)
Ω
70
65
60
55
50
45
40
2.5
3
3.5
4
4.5
5
5.5
0
Variation (%)
-1
-2
-3
-4
-20
0
20
40
60
80
100
Input Voltage (V)
Temperature (°C)
Enable Threshold vs. Input Voltage
1.2
Output Voltage Variation vs. Temperature
(I
OUT
= 2A; V
O
= 3.3V)
0.4
Enable Threshold (V)
1.1
1
0.9
0.8
0.7
0.6
2.5
3
3.5
4
4.5
5
5.5
Variation (%)
EN(H)
0.2
0
-0.2
-0.4
-0.6
-0.8
-20
0
20
40
60
80
100
EN(L)
Input Voltage (V)
Temperature (°C)
°
1155.2005.11.1.6
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
