AAT2601 Analogic Corporation, AAT2601 Datasheet - Page 12

• Manufacturer Part Number: AAT2601
• Manufacturer: Analogic Corporation

Typical Characteristics—Step-Down Buck Converter
12
12
(V
V
Step-Down Buck Efficiency vs. Output Current
BAT
BAT
100
90
80
70
60
50
40
30
20
10
-0.1
-0.2
-0.3
-0.4
-0.5
1.92
1.88
1.84
1.80
1.76
0.5
0.4
0.3
0.2
0.1
0
0
= 3.5V to 4.2V; I
1
2.5
Line Transient Response Step-Down Buck
I
V
vs. CHGIN and Battery Input Voltage
OUT
BAT
I
OUT
V
Step-Down Buck Line Regulation
= 10mA
CHGIN
= 3.6V
3
= 0.01mA
= 5.5V
I
OUT
(V
V
V
(V
V
3.5
OUT
BAT
OUT
BAT
CHGIN
= 1mA
OUT
Output Current (mA)
10
Input V
Time (100µs/div)
= 300mA; V
= 1.8V; L = 3.3µH)
= 2.7V
V
= 1.8V; L = 3.3µH)
O
= 6.0V
V
BAT
4
BAT
4.2
I
, V
OUT
4.5
V
V
CHGIN
OUT
CHGIN
= 50mA
CHGIN
I
OUT
= 1.8V; C
100
V
(V)
= 5.0V
CHGIN
5
I
= 200mA
I
OUT
OUT
V
BAT
= 100mA
= 4.5V
= 300mA
5.5
OUT
= 4.2V
= 4.7µF)
4.5
4.0
3.5
3.0
6
1000
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Total Power Solution for Portable Applications
Total Power Solution for Portable Applications
(V
V
CHGIN
Step-Down Buck Output Voltage vs. Temperature
CHGIN
-0.1
-0.2
-0.3
-0.4
-0.5
1.825
1.820
1.815
1.810
1.805
1.800
1.795
1.790
1.785
1.780
1.86
1.84
1.82
1.80
1.78
1.76
0.5
0.4
0.3
0.2
0.1
0.0
= 4.5V to 5.5V; I
1
Line Transient Response Step-Down Buck
-50
Step-Down Buck Load Regulation
V
CHGIN
V
V
CHGIN
-25
BAT
= 5.5V
PRODUCT DATASHEET
PRODUCT DATASHEET
V
vs. Output Current
(V
= 2.7V
V
= 6.0V
CHGIN
CHGIN
OUT
OUT
Output Current (mA)
V
V
10
(I
Time (100µs/div)
Temperature (°C)
V
BAT
OUT
0
BAT
= 300mA; V
= 1.8V; L = 3.3µH)
O
V
= 5.0V
CHGIN
= 4.2V
= 3.6V
= 10mA)
V
= 4.5V
25
AAT2601178
AAT2601178
BAT
= 3.6V
V
OUT
BAT
100
V
V
= 1.8V; C
V
50
= 4.2V
CHGIN
BAT
CHGIN
2601.2008.01.1.0
2601.2008.01.1.0
V
= 2.7V
V
CHGIN
CHGIN
= 5.0V
= 5.5V
75
OUT
= 4.5V
= 6.0V
= 4.7µF)
6.0
5.5
5.0
4.5
4.0
1000
100