AAT1141 Datasheet, PDF (8/20 Pages) Advanced Analogic Technologies – Fast Transient 600mA Step-Down Converter

Typical Characteristics
Step-Down Converter Load Transient Response
(1mA to 300mA; V_IN = 3.6V; V_OUT = 1.0V;
C_OUT = 10µF; C_FF = 0pF)
V_OUT
(100mV/div) _1.0V
I_OUT
(100mA/div)
1mA
300mA
Time (40µs/div)
Line Response
(V_OUT = 1.8V @ 400mA)
1.82
6.0
1.81
5.5
1.80
5.0
1.79
4.5
1.78
4.0
1.77
3.5
1.76
3.0
Time (25μs/div)
Output
Ripple
(20mV/div)
Step-Down Converter Output Ripple
(V_OUT = 1.8V; V_IN = 3.6V; I_OUT = 600mA;
L = 4.7µH; C_FF = 100pF; C_OUT = 4.7µF)
1.8V
LX
(2V/div) 0V
Inductor
Current ^600mA
(100mA/div)
Time (0.5µs/div)
DATA SHEET
AAT1141
Fast Transient 600mA Step-Down Converter
Step-Down Converter Load Transient Response
(300mA to 400mA; V_IN = 3.6V;
V_OUT = 1.0V; C_OUT = 10µF; C_FF = 0pF)
V_OUT
(50mV/div) _1.0V
I_OUT
(100mA/div)
300mA
400mA
Time (40µs/div)
Step-Down Converter Output Ripple
(V_OUT = 1.8V; V_IN = 3.6V; I_OUT = 1mA; L = 4.7µH;
C_FF = 100pF; C_OUT = 4.7µF)
Output
Ripple 1.8V
(20mV/div)
LX _1.8V
(2V/div)
Inductor
Current 0mA
(100mA/div)
Time (10µs/div)
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