AAT1146 Datasheet, PDF (7/20 Pages) Advanced Analogic Technologies – Fast Transient 400mA Step-Down Converter

Typical Characteristics
P-Channel R_DS(ON) vs. Input Voltage
750
700
650
120°C 100°C
600
550
500
85°C
450
25°C
400
350
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Load Transient Response
(1mA to 300mA; V_IN = 3.6V; V_OUT = 1.8V;
C₁ = 10μF; C_FF = 100pF)
2.0
1.9
V_O
1.8
1.7
I_O
300mA
1mA
I_L
0
Time (50μs/div)
DATA SHEET
AAT1146
Fast Transient 400mA Step-Down Converter
N-Channel R_DS(ON) vs. Input Voltage
750
700
650
120°C _100°C
600
550
500
450
85°C
400
25°C
350
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Load Transient Response
(300mA to 400mA; V_IN = 3.6V;
V_OUT = 1.8V; C₁ = 4.7μF)
1.90
1.85 _VO
1.80
1.75 _IO
400mA
300mA
0.4
0.3
I_L
0.2
0.1
Time (50μs/div)
Load Transient Response
(300mA to 400mA; V_IN = 3.6V;
V_OUT = 1.8V; C₁ = 10μF)
1.90
1.85 _VO
1.80
1.75 _IO
400mA
300mA
0.4
I_L
0.3
0.2
0.1
Time (50μs/div)
Load Transient Response
(300mA to 400mA; V_IN = 3.6V; V_OUT = 1.8V;
C₁ = 10μF; C₄ = 100pF)
1.850
1.825 _VO
1.800
1.775 _IO
400mA
300mA
0.4
I_L
0.3
0.2
0.1
Time (50μs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
201985B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 18, 2013
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