PRODUCT DATASHEET
AAT1276
SwitchRegTM
Boost Converter with USB Power Switch
Typical Characteristics
Efficiency vs. Load
DC Regulation
(VOUT = 5.0V)
1.5
100
80
VIN = 4.2V
1.0
VIN = 4.2V
0.5
VIN = 3.6V
60
40
20
0
VIN = 2.7V
0.0
VIN = 3.6V
-0.5
VIN = 2.7V
-1.0
-1.5
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current (mA)
Output Current (mA)
Line Regulation
(IOUT = 300mA)
Output Voltage vs. Temperature
(VIN = 3.6V; 50Ω Load)
4.960
4.958
4.956
4.954
4.952
4.950
4.948
4.946
4.944
4.942
4.940
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
3.6
3.7
3.8
3.9
4.0
4.1
4.2
-50
-25
0
25
50
75
100
Input Voltage (V)
Temperature (°C)
No Load Current vs. Supply Voltage
No Load Current vs. Temperature
(VIN = 3.6V; VOUT = 5.0V)
140
140
120
100
80
60
40
20
0
120
100
80
60
40
20
0
85°C
-40°C
25°C
2.7
2.9
3.2
3.4
3.6
3.9
4.1
4.3
4.5
4.8
5.0
-50
0
50
100
150
Supply Voltage (V)
Temperature (°C)
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1276.2007.11.1.1
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
