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ACT4050 Datasheet(PDF) 11 Page - Active-Semi, Inc

Part # ACT4050
Description  Wide Input 3.5A Step Down Converter
PDF  13 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT4050 Datasheet(HTML) 11 Page - Active-Semi, Inc

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Active-Semi
ACT4050
Rev 2, 01-Jul-11
- 11 -
www.active-semi.com
Copyright © 2011 Active-Semi, Inc.
Innovative Power
TM
TYPICAL PERFORMANCE CHARACTERISTICS
(Circuit of Figure 5, unless otherwise specified.)
Efficiency vs. Load Current
80
0
Load Current (mA)
VIN = 7V
VIN = 12V
Efficiency vs. Load Current
VIN = 7V
Temperature (°C)
Switching Frequency vs. Temperature
400
310
280
340
370
430
Temperature (°C)
Feedback Voltage vs. Temperature
0.75
0.76
250
70
60
50
100
80
70
60
50
VIN = 5V
Inductor Peak Current Limit vs. Duty
Cycle
2000
4000
5000
2500
3000
Duty Cycle (% )
20
0
40
80
100
60
6000
Shutdown Current vs. Input Voltage
0
15
20
5
10
25
Input Voltage (V)
4
90
100
500
1000
1500
3000
3500
90
0
Load Current (mA)
500
1000
1500
2000
2500
3000
6
8
10
12
14
3500
2500
2000
VOUT = 5V
VOUT = 3.3V
-40
0
40
130
80
-40
0
40
130
80
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.84
0.85
460
490
3500
4500
VIN = 12V
5500



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