AAT2503 Datasheet, PDF (6/22 Pages) Advanced Analogic Technologies – Adjustable 3-Channel Regulator

DATA SHEET
AAT2503
Adjustable Three-Channel Regulator
Typical Characteristics—Step-Down Converter
Efficiency vs. Output Current
(V_OUT = 0.9V; L = 1µH)
90
80
70
60
V_IN = 2.7V
50
V_IN = 3.6V
40
30
V_IN = 4.2V
PWM Only
Mode
20
10
0
0
1
10
100
1000
Output Current (mA)
Efficiency vs. Output Current
(V_OUT = 1.8V; L = 2.2µH)
100
90
80
V_IN = 3.6V
70
60
V_IN = 2.7V
50
40
30 ^VIN ^{= 4.2V}
PWM Only
Mode
20
10
0
0
1
10
100
1000
Output Current (mA)
Efficiency vs. Output Current
(V_OUT = 2.5V; L = 3.3µH)
100
90
80
70
V_IN = 3.3V
60
50
V_IN = 3.6V
40
30 V_IN = 4.2V
20
PWM Only
Mode
10
0
0
1
10
100
1000
Output Current (mA)
Switching Frequency vs. Temperature
(V_IN = 3.6V; I_OUT = 800mA)
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
-40
-20
0
V_OUT = 0.9V
V_OUT = 1.8V
V_OUT = 2.5V
20
40
60
80
100
Temperature (°C)
1.2
0.9
0.6
0.3
0.0
-0.3
-0.6
-0.9
-1.2
0
Load Regulation
(V_OUT = 1.8V; V_MODE/SYNC = V_IN; L = 2.2µH)
V_IN = 4.2V
V_IN = 3.3V VIN = 3.6V
1
10
100
1000
Output Current (mA)
Soft Start
(V_IN = 3.6V; V_OUT = 1.8V; I_OUT = 800mA)
6.0
ENABLE
4.0
2.0
1.8V
0.0
0V
V_OUT
1.0
I_INDUCTOR
0.5
0.0
-0.5
Time (100µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202016B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013