AAT1185 Datasheet, PDF (5/16 Pages) Skyworks Solutions Inc. – High Voltage Step-Down Controller

Typical Characteristics
Circuit of Figure 4, unless otherwise specified.
Step-Down Controller Efficiency vs. Load
(V_OUT = 3.3V; L = 3.9µH)
100
90
80
70
60
50
40
VIN = 6V
30
VIN = 8V
20
V_IN = 12V
VIN = 18V
10
VIN = 24V
0
0.1
1
10
100
1000
10000
Output Current (mA)
Step-Down Controller Line Regulation
(V_OUT = 3.3V; L = 3.9µH)
2.5
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
6
IOUT = 0.1mA
IOUT = 100mA
IOUT = 1A
IOUT = 5A
IOUT = 8A
IOUT = 10A
8
10 12 14 16
18 20 22 24
Input Voltage (V)
Step-Down Controller Output Ripple
(V_IN = 12V; V_OUT = 3.3V; I_OUT = 1mA)
12V
0V
3.31
3.30
3.29
1
0
-1
Time (1µs/div)
DATA SHEET
AAT1185
High Voltage Step-Down Controller
Step-Down Controller DC Regulation
(V_OUT = 3.3V; L = 3.9µH)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
0.1
VIN = 6V
V_IN = 8V
VIN = 12V
VIN = 18V
VIN = 24V
1
10
100
1000
Output Current (mA)
10000
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
-50
Step-Down Controller Output
Voltage Error vs. Temperature
(V_IN = 12V; V_OUT = 3.3V)
IOUT = 0.1mA
IOUT = 100mA
IOUT = 1A
IOUT = 5A
I_OUT = 8A
IOUT = 10A
-25
0
25
50
75
100
Temperature (°C)
Step-Down Controller Output Ripple
(V_IN = 12V; V_OUT = 3.3V; I_OUT = 10A)
12V
0V
3.32
3.30
3.28
12
10
8
Time (1µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202001A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 31, 2012
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