ACT4050
Active- Semi
Rev 2, 01-Jul-11
TYPICAL PERFORMANCE CHARACTERISTICS
(Circuit of Figure 5, unless otherwise specified.)
Efficiency vs. Load Current
Efficiency vs. Load Current
100
90
100
90
VIN = 7V
VIN = 5V
VIN = 12V
VIN = 7V
80
70
80
70
VIN = 12V
60
50
60
50
VOUT = 3.3V
2500 3000 3500
VOUT = 5V
0
500
1000
1500
2000 2500
3000 3500
0
500
1000
1500
2000
Load Current (mA)
Load Current (mA)
Inductor Peak Current Limit vs. Duty
Cycle
Shutdown Current vs. Input Voltage
6000
5500
5000
4500
4000
3500
25
20
15
10
5
3000
2500
2000
0
100
0
20
40
60
80
4
6
8
10
12
14
Input Voltage (V)
Duty Cycle (% )
Switching Frequency vs. Temperature
Feedback Voltage vs. Temperature
490
460
0.85
0.84
0.83
0.82
0.81
0.80
430
400
370
0.79
0.78
0.77
0.76
0.75
340
310
280
250
-40
0
-40
0
40
130
80
40
80
130
Temperature (°C)
Temperature (°C)
Innovative PowerTM
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