AAT1121 Datasheet, PDF (7/19 Pages) Advanced Analogic Technologies – 1.5MHz, 250mA Step-Down Converter

Typical Characteristics
P-Channel R_DS(ON) vs. Input Voltage
1000
900
120°C 100°C
800
85°C
700
600
500
25°C
400
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Load Transient Response
(10mA to 250mA; V_IN = 3.6V; V_OUT = 1.8V;
C_OUT = 4.7µF; C_FF = 100pF)
2.0
1.9
V_O
1.8
1.7
I_O
1.6
250mA
I_LX
10mA
0.2
0.0
-0.2
Time (25µs/div)
Line Response
(V_OUT = 1.8V @ 250mA; C_FF = 100pF)
1.90
1.85
V_O
1.80
1.75
1.70
5.0
4.5
V_IN
4.0
3.5
3.0
Time (25µs/div)
DATA SHEET
AAT1121
1.5MHz, 250mA Step-Down Converter
N-Channel R_DS(ON) vs. Input Voltage
750
700
120°C
650
100°C
600
85°C
550
500
450
400
350
25°C
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Load Transient Response
(10mA to 250mA; V_IN = 3.6V; V_OUT = 1.8V; C_OUT = 4.7µF)
2.0
1.9
V_O
1.8
1.7
1.6
I_O
I_LX
250mA
10mA
0.2
0.0
-0.2
Time (25µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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201974B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 15, 2013