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AAT3603 Datasheet(PDF) 12 Page - Advanced Analogic Technologies

Part # AAT3603
Description  Total Power Solution for Portable Applications
PDF  35 Pages
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Manufacturer  ANALOGICTECH [Advanced Analogic Technologies]
Direct Link  http://www.analogictech.com
Logo ANALOGICTECH - Advanced Analogic Technologies

AAT3603 Datasheet(HTML) 12 Page - Advanced Analogic Technologies

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AAT3603178
Total Power Solution for Portable Applications
PRODUCT DATASHEET
12
3603.2008.06.1.0
www .analogictech.com
AAT3603178
Total Power Solution for Portable Applications
PRODUCT DATASHEET
12
3603.2008.06.1.0
www .analogictech.com
Typical Characteristics—Step-Down Buck Converter
Step-Down Buck Efficiency vs. Output Current
(VOUT = 1.8V; L = 3.3µH)
Output Current (mA)
0
10
20
30
40
50
60
70
80
90
100
1
10
100
1000
VBAT = 2.7V
VBAT = 4.2V
VCHGIN = 4.5V
VCHGIN = 5.0V
VCHGIN = 6.0V
VCHGIN = 5.5V
VBAT = 3.6V
Step-Down Buck Load Regulation
vs. Output Current
(VOUT = 1.8V; L = 3.3µH)
Output Current (mA)
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
1
10
100
1000
VBAT = 2.7V
VBAT = 4.2V
VCHGIN = 4.5V
VCHGIN = 5.0V
VCHGIN = 6.0V
VCHGIN = 5.5V
VBAT = 3.6V
Step-Down Buck Line Regulation
vs. CHGIN and Battery Input Voltage
(VOUT = 1.8V; L = 3.3µH)
Input VBAT, VCHGIN (V)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
2.5
3
3.5
4
4.5
5
5.5
6
4.2
IOUT = 1mA
IOUT = 0.01mA
IOUT = 10mA
IOUT = 300mA
IOUT = 200mA
IOUT = 100mA
VBAT
VCHGIN
IOUT = 50mA
Step-Down Buck Output Voltage vs. Temperature
(IOUT = 10mA)
Temperature (°C)
1.780
1.785
1.790
1.795
1.800
1.805
1.810
1.815
1.820
1.825
-50
-25
0
25
50
75
100
VCHGIN = 6.0V
VBAT = 2.7V
VBAT = 3.6V
VBAT = 4.2V
VCHGIN = 4.5V
VCHGIN = 5.5V
VCHGIN = 5.0V
V
BAT Line Transient Response Step-Down Buck
(VBAT = 3.5V to 4.2V; IOUT = 300mA; VOUT = 1.8V; COUT = 4.7µF)
Time (100µs/div)
1.76
1.80
1.84
1.88
1.92
3.0
3.5
4.0
4.5
VO
VBAT
V
CHGIN Line Transient Response Step-Down Buck
(VCHGIN = 4.5V to 5.5V; IOUT = 300mA; VOUT = 1.8V; COUT = 4.7µF)
Time (100µs/div)
1.76
1.78
1.80
1.82
1.84
1.86
4.0
4.5
5.0
5.5
6.0
VO
VCHGIN



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