AAT2146 Datasheet, PDF (6/19 Pages) Advanced Analogic Technologies – Low Noise, Fast Transient 600mA Step-Down Converter

SwitchReg^TM
PRODUCT DATASHEET
AAT2146
Low Noise, Fast Transient 600mA Step-Down Converter
Typical Characteristics
Line Regulation
(V_OUT = 1.8V)
0.5
0.4
1mA
0.3
400mA
600mA
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Switching Frequency vs. Temperature
(V_OUT = 1.8V; I_OUT = 1A)
2.08
2.06
2.04
2.02
2
1.98
1.96
1.94
1.92
-40
-15
10
35
60
85
Input Voltage (V)
Frequency Variation vs. Input Voltage
4
3
2
1
0
-1
-2
-3
VOUT = 1.8V
VOUT = 3V
-4
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Output Voltage Error vs. Temperature
(V_IN = 3.6V; V_O = 1.8V, I_OUT = 400mA)
2.0
1.0
0.0
-1.0
-2.0
-40
-20
0
20
40
60
Temperature (°C)
80
100
No Load Quiescent Current vs. Input Voltage
60
55
50
45
40
35
30
25
85°C
20
25C
15
-40°C
10
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
P-Channel R_DS(ON) vs. Input Voltage
550
120°C
500
100°C
85°C
450
25°C
400
350
300
250
200
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage (V)
6
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2146.2008.04.1.1