AAT2158_08 Datasheet, PDF (6/16 Pages) Advanced Analogic Technologies – 1.5A Low Noise Step-Down Converter

SwitchReg^TM
Typical Characteristics
Quiescent Current vs. Input Voltage
(V_OUT = 1.8V; No Load)
80
70
60
85°C
50
25°C
40
30
-40°C
20
10
0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
Output Voltage vs. Input Voltage
(V_OUT = 1.8V; I_OUT = 1A)
1.82
85°C
1.81
1.80
1.79
1.78
25°C
1.77
1.76
-40°C
1.75
1.74
1.73
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
Load Transient Response
(V_OUT = 1.8V)
0.20
2.4
0.10
2.2
0.00
2.0
-0.10
1.8
-0.20
1.6
-0.30
1.4
-0.40
1.2
-0.50
1.0
-0.60
0.8
Time (100µs/div)
PRODUCT DATASHEET
AAT2158
1.5A Low Noise Step-Down Converter
Output Voltage vs. Temperature
(V_OUT = 1.8V; I_OUT = 1A)
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80 90
Temperature (°C)
Switching Frequency vs. Temperature
(V_OUT = 1.8V; I_OUT = 1A)
1.56
1.54
1.52
1.5
1.48
1.46
1.44
1.42
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
Temperature (°C)
Load Transient Response
(V_OUT = 1.8V; C_FF = 100pF)
0.20
2.4
0.10
2.2
0.00
2.0
-0.10
1.8
-0.20
1.6
-0.30
1.4
-0.40
1.2
-0.50
1.0
-0.60
0.8
Time (100µs/div)
6
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2158.2008.02.1.2