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| AAT1145 Datasheet, PDF (5/16 Pages) Advanced Analogic Technologies – 1.2A Step-Down Converter | |||
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SwitchRegTM
Typical Characteristics
100
90
80
70
60
50
40
30
20
10
0
0.1
Efficiency vs. Output Current
(VOUT = 3.3V; TA = 25°C; L = 2.2µH)
VIN = 4.2V
VIN = 3.6V
VIN = 5.0V
1
10
100
1000
Output Current (mA)
10000
100
90
80
70
60
50
40
30
20
10
0
0.1
Efficiency vs. Output Current
(VOUT = 1.5V; TA = 25°C; L = 2.2µH)
VIN = 2.5V
VIN = 3.6V
VIN = 5.0V
VIN = 4.2V
1
10
100
1000
Output Current (mA)
10000
Output Voltage vs. Output Current
(VOUT = 3.3V; TA = 25°C; L = 2.2µH)
3.400
3.380
3.360
3.340
3.320
3.300
3.280
3.260
3.240
3.220
3.200
0
VIN = 3.6V
VIN = 5.0V
VIN = 4.2V
200
400
600
800
1000
1200
Output Current (mA)
PRODUCT DATASHEET
AAT1145
1.2A Step-Down Converter
Efficiency vs. Output Current
(VOUT = 1.8V; TA = 25°C; L = 2.2µH)
100
90
80
70
60
50
40
30
20
10
0
0.1
VIN = 3.6V
VIN = 2.5V
VIN = 5.0V
VIN = 4.2V
1
10
100
1000
Output Current (mA)
10000
100
90
80
70
60
50
40
30
20
10
0
0.1
Efficiency vs. Output Current
(VOUT = 1.2V; TA = 25°C; L = 2.2µH)
VIN = 2.5V
VIN = 3.6V
VIN = 5.0V
VIN = 4.2V
1
10
100
1000
Output Current (mA)
10000
Output Voltage vs. Output Current
(VOUT = 1.8V; TA = 25°C; L = 2.2µH)
1.820
1.815
1.810
1.805
1.800
VIN = 5.0V
VIN = 4.2V
1.795
1.790
VIN = 2.5V VIN = 3.6V
1.785
1.780
0
200
400
600
800
1000
1200
Output Current (mA)
1145.2007.11.1.1
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