PRODUCT DATASHEET
AAT1
161
SwitchReg
TM
Typical Characteristics
Non Switching Supply Current vs. Input Voltage
Non Switching Supply Current (µA)
180
170
160
150
140
130
120
110
100
5
6
7
8
9
10
11
12
13.2V Input, 3A Step-Down Converter
P-Channel R
DS(ON)
vs. Temperature
(V
IN
= 6V)
200
180
160
140
120
100
80
60
40
20
0
-40
-15
10
35
60
85
Resistance (mΩ)
Ω
85°C
25°C
-40°C
6V
12V
Input Voltage (V)
Temperature (°C)
Switching Frequency vs. Temperature
(V
IN
= 6V)
Output Voltage Difference (%)
Switching Frequency (kHz)
810
805
800
795
790
785
780
775
770
-40
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-40
V
OUT
Tolerance vs. Temperature
(V
OUT
= 3.3V; I
LOAD
= 3A)
V
IN
= 12V
V
IN
= 6V
-15
10
35
60
85
-15
10
35
60
85
Temperature (°C)
Temperature (°C)
Line Transient
(V
OUT
= 5.0V; C
FF
= 100pF; V
IN
= 6V to 11V;
I
OUT
= 3A; C
IN
= 10µF; C
OUT
= 66µF; L = 3.8µH)
5.2
20
5.1
5.0
4.9
4.8
4.7
4.6
4.5
18
5.6
5.4
Load Transient
(V
OUT
= 5.0V; C
FF
= 100pF; I
OUT
= 1A to 3A; C
OUT
= 66µF)
8
7
6
5
4
3
2
1
0
Output Voltage
(top) (V)
Output Voltage
(top) (V)
16
14
12
10
8
6
4
5.2
5.0
4.8
4.6
4.4
4.2
4.0
Load Current
(bottom) (A)
Input Voltage
(bottom) (V)
Time (200ms/div)
Time (200ms/div)
6
www.analogictech.com
1161.2008.03.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
