AAT2556 Datasheet, PDF (7/27 Pages) Advanced Analogic Technologies – Battery Charger and Step-Down Converter for Portable Applications

DATA SHEET
AAT2556
Battery Charger and Step-Down Converter for Portable Applications
Typical Characteristics – Step-Down Converter
Output Voltage Error vs. Temperature
(V_IN = 3.6V; V_OUT = 1.8V; I_OUT = 250mA)
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
-40
-20
0
20
40
60
80
100
Temperature (°C)
Switching Frequency Variation
vs. Temperature
(V_IN = 3.6V; V_OUT = 1.8V)
10.0
8.0
6.0
4.0
2.0
0.0
-2.0
-4.0
-6.0
-8.0
-10.0
-40
-20
0
20
40
60
80
100
Temperature (°C)
Frequency Variation vs. Input Voltage
(V_OUT = 1.8V)
2.0
1.0
0.0
-1.0
-2.0
-3.0
-4.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
No Load Quiescent Current vs. Input Voltage
50
45
40
35 ^85°C
30 25°C
25 _-40°C
20
15
10
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
P-Channel R_DS(ON) vs. Input Voltage
1000
900
120°C 100°C
800
85°C
700
600
500
25°C
400
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
N-Channel R_DS(ON) vs. Input Voltage
750
700
120°C
650
100°C
600
85°C
550
500
450
400
350
25°C
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202177B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
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