PRODUCT DATASHEET
AAT1
154
SwitchReg
TM
Typical Characteristics
Output Voltage vs. Temperature
(I
OUT
= 2A)
0.4
1
1MHz 3A Step-Down DC/DC Converter
Line Regulation
(V
OUT
= 3.3V)
Output Voltge Error (%)
0.2
0
-1
-2
-3
-4
-5
3
I
O
= 0.3A
Variation (%)
0
-0.2
-0.4
-0.6
-0.8
-20
0
20
40
60
80
100
I
O
= 3.0A
3.5
4
4.5
5
5.5
6
Temperature (°C)
°
Input Voltage (V)
Over-Temperature Current vs. Input Voltage
(V
OUT
= 3.3V)
3.6
0.0
-1.0
Load Regulation
(V
IN
= 5.0V; V
IN
= 3.3V)
Output Current (A)
3.4
3.2
3
2.8
2.6
2.4
2.2
Output Error (%)
4
4.25
4.5
4.75
5
5.25
5.5
70°C
-2.0
-3.0
-4.0
-5.0
-6.0
-7.0
-8.0
-9.0
-10.0
85°C
100°C
3.5
3.75
2
0.01
0.1
1
10
Input Voltage (V)
Load Current (A)
Non-Switching Operating Current vs. Temperature
(FB = 0V)
0.8
Over-Temperature Shutdown
Current vs. Temperature
(V
OUT
= 3.3V; V
IN
= 5.0V; L = 1.5μH)
6
Operating Current (mA)
V
IN
= 5.5V
0.7
V
IN
= 5.0V
Output Current (A)
5.5
5
4.5
4
3.5
3
2.5
2
10
20
30
40
50
60
70
80
90
100
0.6
V
IN
= 4.2V
0.5
V
IN
= 3.6V
V
IN
= 2.7V
0.4
-20
0
20
40
60
80
100
120
Temperature (°C)
Temperature (°C)
6
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1154.2007.11.1.7
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