AAT2148 Datasheet, PDF (6/18 Pages) Skyworks Solutions Inc. – Low-Noise, Fast Transient 1A Step-Down Converter

DATA SHEET
AAT2148
Low-Noise, Fast Transient 1A Step-Down Converter
Typical Characteristics
1.00
0.75
0.50
0.25
0.00
-0.25
-0.50
-0.75
-1.00
2.7
Line Regulation
(V_OUT = 1.8V; C_OUT = 10μF; C_FF = 100pF)
IOUT = 1A
IOUT = 500mA
IOUT = 1mA
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Switching Frequency vs. Temperature
2.2
2.15
2.1
2.05
2
1.95
1.9
1.85
1.8
-40
-20
0
20
40
60
80
100
Temperature (°C)
Output Error vs. Temperature
(I_OUT = 500mA)
0.005
0.000
-0.005
-0.010
-0.015
-40
-20
0
20
40
60
Temperature (°C)
80
100
Quiescent Current vs. Input Voltage
60
55
50
45
40
VOUT = 3.3V
35
VOUT = 1.8V
VOUT = 1.2V
30
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Quiescent Current vs. Temperature
(VIN = 3.6V)
60
50
40
30
20
-40
-20
0
20
40
60
Temperature (°C)
VOUT = 3.3V
VOUT = 1.8V
VOUT = 1.2V
80
100
P-Channel R_DS(ON) vs. Input Voltage
500
450
400
350
300
250
200
2.7
85°C
25°C
-40°C
3.3
3.9
4.5
5.1
Input Voltage (V)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
6
202009A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 28, 2012