AAT2148 Datasheet, PDF (8/18 Pages) Skyworks Solutions Inc. – Low-Noise, Fast Transient 1A Step-Down Converter

Typical Characteristics
Output Ripple
(V_IN = 3.6V; V_OUT = 1.2V; I_OUT = 10mA;
L = 2.2μH; C_OUT = 10μF; C_FF = 100pF)
DATA SHEET
AAT2148
Low-Noise, Fast Transient 1A Step-Down Converter
Output Ripple
(V_IN = 3.6V; V_OUT = 1.2V; I_OUT = 1A;
L = 2.2μH; C_OUT = 10μF; C_FF = 100pF)
LX
(2V/div)
0
I_LX
(0.1A/div) ^0A
V_{OUT 1.2}
(20mV/div)
LX
(2V/div)
0
I_{LX 1A}
(0.2A/div)
V_{OUT 1.2}
(10mV/div)
Time (1μs/div)
Time (0.2μs/div)
Output Ripple
(V_IN = 3.6V; V_OUT = 1.8V; I_OUT = 1A;
L = 4.7μH; C_OUT = 10μF; C_FF = 100pF)
LX
(2V/div)
0
I_{LX 1A}
(0.1A/div)
V_OUT
(10mV/div)
1.8
Time (0.2μs/div)
Soft Startup
(V_IN = 3.6V; V_OUT = 1.8V; I_OUT = 1A)
V_EN
(2V/div)
0
I_IN
(0.5A/div) ⁰
V_OUT
(1V/div) ⁰
Time (100μs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202009A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 28, 2012