AAT1151 Datasheet, PDF (5/16 Pages) Advanced Analogic Technologies – 850kHz 700mA Synchronous Buck DC/DC Converter

AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Typical Characteristics
No Load Supply Current vs. Input Voltage
300
250
T = 85°C
200
150
T = -40°C
100
T = 25°C
50
0
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Frequency vs. Input Voltage
890
880
870
860
850
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Output Voltage vs. Temperature
1.794
1.792
1.79
1.788
1.786
1.784
1.782
1.78
-40
-20
0
20
40
60
Temperature (°C)
80
100
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
1
Load and Line Regulation
V_IN = 4.2V
V_IN = 3.6V
V_IN = 2.7V
10
100
1000
Load Current (mA)
Switching Frequency vs. Temperature
1200
1000
800
600
400
200
0
-40
-20
0
20
40
60
80
100
Temperature (°C)
100
95
90
85
80
75
70
65
60
55
50
1
AAT1151 Efficiency
(V_OUT = 2.5V; L = 4.2µH)
10
100
1000
Output Current (mA)
10000
1151.2005.11.1.4
5