AAT1162
12V, 1.5A Step-Down DC/DC Converter
Typical Characteristics
Test circuit of Figure 2, unless otherwise specified.
Switching Quiescent Current vs. Input Voltage
(V
OUT
= 3.3V)
210
1000
900
800
On Time vs. Temperature
(V
OUT
= 3.3V)
Quiescent Current (µA)
200
190
180
170
160
150
5
6
On Time (ns)
85°C
25°C
700
600
500
400
300
200
100
V
IN
= 5V
V
IN
= 12V
-40°C
7
8
9
10
11
12
0
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90
Input Voltage (V)
Temperature (°C)
Output Voltage Tolerance vs. Temperature
(V
OUT
= 3.3V; I
LOAD
= 1.5A)
Output Voltage Difference (%)
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-40 -30
-20 -10
0
10
20
30
40
50
60
70
80
90
Line Regulation
(V
OUT
= 5V)
Output Voltage Difference (%)
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
6
7
8
9
10
11
12
I
OUT
= 500mA
I
OUT
= 1.5A
I
OUT
= 1mA
I
OUT
= 100mA
I
OUT
= 10mA
Temperature (°C)
Input Voltage (V)
Line Regulation
(V
OUT
= 3.3V)
Output Voltage Difference (%)
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
5
6
7
8
9
10
11
12
Load Regulation
(V
OUT
= 5V)
Output Voltage Difference (%)
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
0.0001
0.001
0.01
0.1
1
10
I
OUT
= 1A
I
OUT
= 10mA
I
OUT
= 1.5A
V
IN
= 12V
V
IN
= 10V
I
OUT
=100mA
I
OUT
= 1mA
V
IN
= 8.4V
V
IN
= 6V
Input Voltage (V)
Output Current (mA)
1162.2007.09.1.2
7
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