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| AAT1145_08 Datasheet, PDF (5/17 Pages) Advanced Analogic Technologies – 1.5A 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 = 3.7V
VIN = 4.2V
VIN = 5V
VIN = 5.5V
1
10
100
1000
10000
Output Current (mA)
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 = 2.7V
VIN = 3.6V
VIN = 4.2V
VIN = 5V
VIN = 5.5V
1
10
100
1000
10000
Output Current (mA)
DC Regulation
(VOUT = 3.3V; TA = 25°C; L = 2.2µH; COUT = 22µF)
3.399
3.366
3.333
VIN = 5.5V
VIN = 5V
VIN = 4.2V
VIN = 3.7V
3.300
3.267
3.234
3.201
0
300
600
900
1200
1500
Output Current (mA)
PRODUCT DATASHEET
AAT1145
1.5A Step-Down Converter
100
90
80
70
60
50
40
30
20
10
0
0.1
Efficiency vs. Output Current
(VOUT = 1.8V; TA = 25°C; L = 2.2µH)
VIN = 2.5V
VIN = 3.6V
VIN = 4.2V
VIN = 5V
VIN = 5.5V
1
10
100
1000
10000
Output Current (mA)
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 = 4.2V
VIN = 5V
1
10
100
1000
Output Current (mA)
10000
DC Regulation
(VOUT = 1.8V; TA = 25°C; L = 2.2µH; COUT = 22µF)
1.854
1.836
1.818
1.800
VIN = 5.5V
VIN = 5V
VIN = 4.2V
VIN = 3.6V
VIN = 2.5V
1.782
1.764
1.746
0
300
600
900
1200
1500
Output Current (mA)
1145.2008.01.1.2
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