AAT1162
12V, 1.5A Step-Down DC/DC Converter
Typical Characteristics
Test circuit of Figure 2, unless otherwise specified.
Load Regulation
(VOUT = 3.3V)
N-Channel RDS(ON) vs. Temperature
120
0.4
VIN = 12V
0.3
100
VIN = 6V
VIN = 10V
0.2
80
60
0.1
0
-0.1
-0.2
-0.3
VIN = 8.4V
VIN = 6V
40
VIN = 12V
VIN = 5V
20
0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90
0.0001
0.001
0.01
0.1
1
10
Output Current (mA)
Temperature (°C)
P-Channel RDS(ON) vs. Temperature
Line Transient
(VOUT = 3.3V; CFF = 100pF)
8
7
6
5
4
3
2
1
0
3.48
3.45
3.42
3.39
3.36
3.33
3.3
200
180
160
140
120
100
80
VIN = 6V
VIN
= 12V
60
40
3.27
3.24
20
0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90
Temperature (°C)
Time (20µs/div)
Load Transient
(VOUT = 5V; CFF = 100pF)
Load Transient
(VOUT = 3.3V; CFF = 100pF)
3.6
3.4
3.2
3
3.5
5.2
5
4
3
3.5
3
1A
2.5
2
4.8
4.6
4.4
4.2
4
1.2A
2.5
2
10mA
10mA
2.8
2.6
2.4
2.2
2
1.5
1
1.5
1
0.5
0
3.8
3.6
0.5
0
-0.5
Time (50µs/div)
Time (50µs/div)
8
1162.2007.09.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
