AAT2601B Datasheet, PDF (12/39 Pages) Skyworks Solutions Inc. – Total Power Solution for Portable Applications

DATA SHEET
AAT2601B
Total Power Solution for Portable Applications
Typical Characteristics—Step-Down Buck Converter
Step-Down Buck Efficiency vs. Output Current
(V_OUT = 1.8V; L = 3.3µH)
100
90
V_BAT = 2.7V
V_BAT = 3.6V
80
70
60
50
40
30
V_CHGIN = 5.5V
20
V_CHGIN = 6.0V
10
0
1
10
V_BAT = 4.2V
V_CHGIN = 4.5V
V_CHGIN = 5.0V
100
1000
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
Step-Down Buck Load Regulation
vs. Output Current
(V_OUT = 1.8V; L = 3.3µH)
V_CHGIN = 4.5V
V_BAT = 4.2V
V_CHGIN = 5.5V
V_CHGIN = 6.0V
V_BAT = 2.7V
V_BAT = 3.6V
V_CHGIN = 5.0V
10
100
1000
Output Current (mA)
Step-Down Buck Line Regulation
vs. CHGIN and Battery Input Voltage
(V_OUT = 1.8V; L = 3.3µH)
0.5
0.4
0.3 ^IOUT ^{= 0.01mA}
I_OUT = 300mA
0.2
I_OUT = 200mA
0.1
0
-0.1 I_OUT = 10mA
-0.2
-0.3
-0.4
-0.5
2.5
I_OUT = 1mA
I_OUT = 50mA
V_BAT
V_CHGIN ^{IOUT = 100mA}
3
3.5
4 4.2 4.5
5
5.5
6
Input V_BAT, V_CHGIN (V)
V_BAT Line Transient Response Step-Down Buck
(V_BAT = 3.5V to 4.2V; I_OUT = 300mA; V_OUT = 1.8V; C_OUT = 4.7µF)
1.92
1.88
1.84
V_O
1.80
1.76
4.5
V_BAT
4.0
3.5
3.0
Time (100µs/div)
Step-Down Buck Output Voltage vs. Temperature
(I_OUT = 10mA)
1.825
1.820
V_CHGIN = 5.0V
1.815
1.810
1.805
1.800
1.795
V_CHGIN = 5.5V
V_CHGIN = 6.0V
V_BAT = 3.6V
V_BAT = 2.7V
V_CHGIN = 4.5V
1.790
1.785
V_BAT = 4.2V
1.780
-50
-25
0
25
50
75
100
Temperature (°C)
V_CHGIN Line Transient Response Step-Down Buck
(V_CHGIN = 4.5V to 5.5V; I_OUT = 300mA; V_OUT = 1.8V; C_OUT = 4.7µF)
1.86
1.84
1.82
V_O
1.80
1.78
6.0
1.76
5.5
V_CHGIN
5.0
4.5
4.0
Time (100µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202181B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013