AAT1141 Datasheet, PDF (6/20 Pages) Advanced Analogic Technologies – Fast Transient 600mA Step-Down Converter

Typical Characteristics
Soft Start
(V_IN = 3.6V; V_OUT = 1.8V; Load = 3Ω; C_FF = 100pF)
EN
(2V/div)
V_OUT ^0V
(2V/div)
0V
I_IN
(200mA/div) 0mA
Time (100μs/div)
Output Voltage Error vs. Temperature
(V_IN = 3.6V; V_O = 1.8V; I_OUT = 400mA)
2.0
1.0
0.0
-1.0
-2.0
-40
-20
0
20
40
60
Temperature (°C)
80
100
Frequency vs. Input Voltage
2.0
1.0 _{VOUT = 1.8V}
0.0
-1.0
V_OUT = 2.5V
V_OUT = 3.3V
-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)
DATA SHEET
AAT1141
Fast Transient 600mA Step-Down Converter
Line Regulation
(V_OUT = 1.8V)
0.5
0.4
IOUT = 10mA
0.3
I_OUT = 600mA
0.2
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Switching Frequency vs. Temperature
(V_IN = 3.6V; V_OUT = 1.8V)
10.00
8.00
6.00
4.00
2.00
0.00
-2.00
-4.00
-6.00
-8.00
-10.00
-40
-20
0
20
40
60
80
100
Temperature (°C)
No Load Quiescent Current vs. Input Voltage
(V_OUT = 3.0V, L = 6.8µH)
60
55
T_A = 85°C
50
T_A = 25°C
45
40
35
30
25
T_A = -40°C
20
3.3
3.8
4.3
4.8
5.3
Input Voltage (V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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201979B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 15, 2013