AAT1130 Datasheet, PDF (6/18 Pages) Advanced Analogic Technologies – 2.5MHz 500mA Step-Down DC/DC Converter

Typical Characteristics
Supply Current vs. Supply Voltage
(Switching)
100
95
90
85
80
75
70
65
60
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Supply Voltage (V))
DATA SHEET
AAT1130
2.5MHz 400mA Step-Down DC/DC Converter
Switching Frequency vs. Input Voltage
(V_OUT = 1V; C_IN = C_OUT = 2.2µF; L = 1µH)
4
3.75
3.5
3.25
3
2.75
2.5
2.25
2
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
On-Time vs. Input Voltage
(V_OUT = 1V; C_IN = C_OUT = 2.2µF; L = 1µH))
250
200
150
100
50
0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Switching Frequency vs. Input Voltage
(V_OUT = 1.8V; C_IN = C_OUT = 2.2µF; L = 1.5µH))
3
2.75
2.5
2.25
2
1.75
1.5
1.25
1
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
On-Time vs. Input Voltage
(V_OUT = 1.8V; C_IN = C_OUT = 2.2µF; L = 1.5µH))
400
350
300
250
200
150
100
50
0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Switching Frequency Variation
vs. Load Current
20
VIN = 2.7V
15
VIN = 3.3V
10
VIN = 3.6V
VIN = 4.2V
5
VIN = 5V
VIN = 5.5V
0
-5
-10
-15
-20
200 250 300 350 400 450 500 550 600
Load Current (mA)
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6
201977B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 15, 2013