AAT2138 Datasheet, PDF (5/18 Pages) Skyworks Solutions Inc. – High Current Step-Down Converter with High-Precision Programmable Current Limited Load Switch

DATA SHEET
AAT2138
High Current Step-Down Converter
with High-Precision Programmable Current Limited Load Switch
Typical Characteristics
Step-Down Converter Efficiency
(V_OUT = 3.4V)
100
90
80
70
60
50
40
30
20
10
0
1
V_REGIN = 3.8V
V_REGIN = 4.2V
V_REGIN = 4.5V
V_REGIN = 4.8V
V = 5.0V
REGIN
V_REGIN = 5.5V
10
100
1000
10000
Output Current (mA)
100
90
80
70
60
50
40
30
20
10
0
1
Step-Down Converter Efficiency
(V_OUT = 3.65V)
V_IN = 4.2V
V_IN = 4.5V
V_IN = 4.8V
V_IN = 5.0V
V_IN = 5.2V
V_IN = 5.5V
10
100
1000
10000
Output Current (mA)
100
90
80
70
60
50
40
30
20
10
0
1
Step-Down Converter Efficiency
(V_OUT = 3.8V)
V_REGIN = 4.2V
V_REGIN = 4.5V
V_REGIN = 4.8V
V_REGIN = 5.0V
V_REGIN = 5.2V
V_REGIN = 5.5V
10
100
1000
10000
Output Current (mA)
Step-Down Converter Load Regulation
(V_OUT = 3.8V)
1.2
0.8
0.4
0
-0.4
-0.8
-1.2
0
V_REGIN = 4.2V
V_REGIN = 4.5V
V_REGIN = 4.8V
V_REGIN = 5.0V
V_REGIN = 5.2V
V_REGIN = 5.5V
500
1000
1500
2000
Output Current (mA)
2500
3000
Step-Down Converter Load Regulation
(V_OUT = 3.4V)
1.2
0.8
0.4
V_REGIN = 3.8V
V_REGIN = 4.2V
V_REGIN = 4.5V
V_REGIN = 4.8V
V_REGIN = 5.0V
V_REGIN = 5.5V
0
-0.4
-0.8
-1.2
0
500
1000
1500
2000
2500
3000
Output Current (mA)
Step-Down Converter Line Regulation
(V_OUT = 3.4V)
1.2
1
0.8
0.6
0.4
0.2
0
-0.2
1mA
-0.4
-0.6
-0.8
100mA
500mA
1000mA
1500mA
-1
-1.2
2000mA
2500mA
3.8
4
4.2 4.4 4.6 4.8
5
5.2 5.4
Input Voltage (V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202006C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 18, 2013
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