AAT2146W Datasheet, PDF (7/18 Pages) Skyworks Solutions Inc. – Low-Noise, Fast Transient 600mA Step-Down Converter

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AAT214466W _W
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Typical Characteristics
Load Transient
(V_OUT= 1.8V; V_IN= 3.6V; I_OUT= 1mA to 300mA; C_FF= 100pF)
2.0
1.4
1.9
1.2
1.8
1.0
1.7
0.8
1.6
0.6
1.5
0.4
1.4
0.2
1.3
0.0
1.2
-0.2
Time (100µs/div)
Line Transient
(V_OUT= 1.8V; V_IN= 3.6 to 4.2V; I_OUT= 400mA; C_FF = 0pF)
4.8
1.92
4.2
1.90
3.6
1.88
3.0
1.86
2.4
1.84
1.8
1.82
1.2
1.80
0.6
1.78
0.0
1.76
Time (50µs/div)
P-Channel R_DS(ON) vs. Input Voltage
(Junction Temperature)
550
120°C
500
100°C
85°C
450
25°C
400
350
300
250
200
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage (V)
N-Channel R_DS(ON) vs. Input Voltage
(Junction Temperature)
550
120°C
500
100°C
450
85°C
25°C
400
350
300
250
200
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage (V)
Output Voltage Ripple
(V_OUT= 1.8V; V_IN= 3.6V; I_OUT= 400mA)
1.82
0.9
1.81
0.8
1.80
0.7
1.79
0.6
1.78
0.5
1.77
0.4
1.76
0.3
1.75
0.2
1.74
0.1
Time (500ns/div)
Soft Start
(V_OUT= 1.8V; V_IN= 3.6V; I_OUT= 400mA)
4
3.5
3
3.0
2
2.5
1
2.0
0
1.5
-1
1.0
-2
0.5
-3
0.0
-4
-0.5
Time (100µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202008A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 28, 2012
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