AAT1141 Datasheet, PDF (7/20 Pages) Advanced Analogic Technologies – Fast Transient 600mA Step-Down Converter

Typical Characteristics
No Load Quiescent Current vs. Input Voltage
(V_OUT = 1.8V, L = 4.7µH)
0.060
0.055
T_A = 85°C
0.050
0.045
T_A = 25°C
0.040
0.035
0.030
0.025
T_A = -40°C
0.020
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
700
85°C
600
25°C
-40°C
500
400
300
200
100
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Step-Down Converter Load Transient Response
(1mA to 300mA; V_IN = 3.6V; V_OUT = 1.8V;
C_OUT = 4.7µF; C_FF = 100pF)
V_OUT
(100mV/div)
1.8V
I_OUT
(100mA/div)
1mA
300mA
Time (40µs/div)
DATA SHEET
AAT1141
Fast Transient 600mA Step-Down Converter
No Load Quiescent Current vs. Input Voltage
(V_OUT = 1.2V, L = 2.2µH)
0.060
0.055
0.050
0.045
T_A = 25°C
T_A = 85°C
0.040
0.035
0.030
0.025
T_A = -40°C
0.020
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
N-Channel R_DS(ON) vs. Input Voltage
600
550
85°C
500
25°C
-40°C
450
400
350
300
250
200
150
100
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Step-Down Converter Load Transient Response
(300mA to 400mA; V_IN = 3.6V;
V_OUT = 1.8V; C_OUT = 4.7µF; C_FF = 100pF)
V_OUT
(50mV/div) _1.8V
I_OUT
(100mA/div)
300mA
400mA
Time (40µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
201979B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 15, 2013
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