ACT4072
TYPICAL PERFORMANCE CHARACTERISTICS
(Circuit of Figure 3, unless otherwise specified.)
Efficiency vs. Output Current
100
90
80
100
90
80
ACT4072-0001
Efficiency vs. Output Current
ACT4072-0002
Efficiency (%)
Efficiency (%)
70
60
50
40
30
20
10
0
0.01
0.1
V
IN
= 12V
V
IN
= 25V
V
IN
= 6V
70
60
50
40
30
20
10
V
OUT
= 5V
L = 22µH
C
IN
= 10µF
C
OUT
= 22µF
V
IN
= 30V
V
IN
= 12V
V
IN
= 8V
V
OUT
= 3.3V
L = 15µH
C
IN
= 10µF
C
OUT
= 22µF
1
10
0
0.01
0.1
1
10
Output Current (A)
Output Current (A)
Switching Frequency vs. Input Voltage
Shutdown Supply Current (mA)
410
18
16
14
12
10
8
6
4
2
0
ACT4072-0003
Shutdown Supply Current vs. Input Voltage
ACT4072-0004
Switching Frequency(kHz)
405
400
395
390
385
380
0.0
0.5
1.0
1.5
2.0
2.5
5
10
15
20
25
30
Temperature (°C)
Input Voltage (V)
Surface Temperature vs. Output Current
80
1.27
ACT4072-0005
Feedback Voltage vs. Temperature
ACT4072-006
V
IN
= 12V
Surface Temperature (°C)
Feedback Voltage (V)
70
V
IN
= 30V
60
50
40
30
20
0.0
0.5
1.0
1.5
V
OUT
=5V
V
IN
= 12V L=22µH
C
IN
=10µF
C
OUT
=22µF
1.25
1.23
1.21
1.19
1.17
2.0
-40
-20
0
20
40
60
80
100
120
Output Current (A)
Temperature (°C)
Innovative Products.
Active Solutions.
-8-
Copyright © 2006 Active-Semi, Inc.
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
