Boost Converter with USB Power Switch
Typical Characteristics
Efficiency vs. Load
100
1.5
AAT1275
DC Regulation
(V
OUT
= 5.0V)
60
40
20
0
0.1
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
Output Error (%)
Efficiency (%)
80
1.0
0.5
0.0
-0.5
-1.0
-1.5
0.1
V
IN
= 4.2V
V
IN
= 2.7V
V
IN
= 3.6V
1
10
100
1000
1
10
100
1000
Output Current (mA)
Output Current (mA)
Line Regulation
(I
OUT
= 300mA)
Output Voltage vs. Temperature
(V
IN
= 3.6V; 50Ω Load)
Ω
0.1
Output Voltage Accuracy (%)
4.960
4.958
4.956
4.954
4.952
4.950
4.948
4.946
4.944
4.942
4.940
3.6
3.7
3.8
3.9
4.0
4.1
4.2
Output Voltage (V)
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-50
-25
0
25
50
75
100
Input Voltage (V)
Temperature (°C)
No Load Current vs. Supply Voltage
140
140
No Load Current vs. Temperature
(V
IN
= 3.6V; V
OUT
= 5.0V)
120
100
80
60
40
20
0
-50
0
50
100
150
No Load Current (µA)
120
100
80
60
40
20
0
2.7
2.9
3.2
3.4
3.6
3.9
4.1
85°C
-40°C
25°C
4.3
4.5
4.8
5.0
No Load Current (µA)
Supply Voltage (V)
Temperature (°C)
°
1275.2007.01.1.3
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
