1MHz 1A Step-Down DC/DC Converter
Typical Characteristics
Efficiency vs. Output Current
(V
OUT
= 1.5V)
100
80
100
90
80
AAT1150
Efficiency vs. Output Current
(V
OUT
= 3.3V)
V
IN
= 5.0V
2.7V
Efficiency (%)
Efficiency (%)
100
1000
70
60
50
40
30
20
10
0
60
4.2V
40
20
0
10
3.6V
10
100
1000
Output Current (mA)
Output Current (mA)
High Side R
DS(ON)
vs. Temperature
170
150
Low Side R
DS(ON)
vs. Temperature
170
3.6V
R
DS(ON)
(mΩ)
150
130
110
90
70
-20
2.7V
R
DS(ON)
(mΩ)
130
110
90
70
-20
3.6V
2.7V
5.5V
4.2V
0
20
40
60
80
100
120
4.2V
5.5V
0
20
40
60
80
100
120
Temperature (°C)
Temperature (°C)
R
DS(ON)
vs. Input Voltage
130
120
Enable Threshold vs. Input Voltage
1.2
High Side
Enable Threshold (V)
1.1
R
DS(ON)
(mΩ)
V
EN
(H)
1
110
100
0.9
0.8
90
80
2.5
3
3.5
4
Low Side
V
EN
(L)
0.7
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Input Voltage (V)
1150.2006.09.1.5
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
