1MHz 3A Buck DC/DC Converter
Typical Characteristics
R
DS(ON)
vs. Temperature
90
0.5
AAT1154
Oscillator Frequency Variation vs.
Supply Voltage
V
IN
= 2.7V
80
V
IN
= 4.2V
Variation (%)
120
0.25
R
DS(ON)
(mΩ)
V
IN
= 3.6V
70
60
0
V
IN
= 5.5V
50
40
-20
0
20
40
60
80
100
V
IN
= 5V
-0.25
-0.5
3.5
4
4.5
5
5.5
Temperature (°C)
Input Voltage (V)
R
DS(ON)
vs. V
IN
, I
DS
= 1A
70
65
Oscillator Frequency Variation vs. Temperature
V
IN
= 5V
1
0
R
DS(ON)
(mΩ)
Ω
Variation (%)
2.5
3
3.5
4
4.5
5
5.5
60
55
50
45
40
-1
-2
-3
-4
-20
0
20
40
60
80
100
Input Voltage (V)
Temperature (°C)
Enable Threshold vs. Input Voltage
1.2
0.4
0.2
Output Voltage vs. Temperature
I
OUT
=2A
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
-0.2
-0.4
-0.6
-0.8
-20
0
20
40
60
80
100
EN(L)
Input Voltage (V)
Temperature (°C)
°
1154.2003.08.0.91
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
