AAT2146W Datasheet, PDF (6/18 Pages) Skyworks Solutions Inc. – Low-Noise, Fast Transient 600mA Step-Down Converter

DATA SHEET
AAT2146W
Low-Noise, Fast Transient 600mA Step-Down Converter
Typical Characteristics
Line Regulation
(V_OUT= 1.8V)
0.5
0.4
0.3
0.2
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
2.7
3.1
3.5
3.9
4.3
4.7
Input Voltage (V)
Iout=600mA
Iout=400mA
Iout=1mA
5.1
5.5
Oscillator Frequency Variation vs. Input Voltage
(V_OUT= 1.8V; I_OUT= 600mA)
4
3
2
1
0
-1
-2
-3
-4
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Output Voltage Error vs. Temperature
(V_OUT= 1.8V; V_IN= 3.6V; I_OUT= 400mA)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-40
-15
10
35
60
85
Temperature (°C)
Quiescent Current vs. Input Voltage
4
3.5
3
2.5
2
T=85C
T=25C
1.5
T=-40C
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Load Transient
(V_OUT= 1.8V; V_IN= 3.6V; I_OUT= 300mA to 400mA; C_FF= 0pF)
1.90
1.0
1.85
0.9
1.80
0.8
1.75
0.7
1.70
0.6
1.65
0.5
1.60
0.4
1.55
0.3
1.50
0.2
Time (100µs/div)
Load Transient
(V_OUT= 1.8V; V_IN= 3.6V; I_OUT= 300mA to 400mA; C_FF= 100pF)
1.90
1.0
1.85
0.9
1.80
0.8
1.75
0.7
1.70
0.6
1.65
0.5
1.60
0.4
1.55
0.3
1.50
0.2
Time (100μs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202008A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 28, 2012