Rainbow-electronics MAX15031 Manual de usuario Pagina 4

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MAX15031
80V, 300mW Boost Converter and Current
Monitor for APD Bias Applications
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V
PWR
= V
IN
= 3.3V, V
OUT
= 70V, circuit of Figure 3 (Figure 4 for V
IN
> 5.5V), unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT
MAX15031 toc01
LOAD CURRENT (mA)
EFFICIENCY (%)
321
10
20
30
40
50
60
70
0
04
V
OUT
= 30V
V
OUT
= 55V
V
OUT
= 70V
V
IN
= 3.3V
EFFICIENCY vs. LOAD CURRENT
MAX15031 toc02
LOAD CURRENT (mA)
EFFICIENCY (%)
321
10
20
30
40
50
60
70
0
04
V
OUT
= 30V
V
OUT
= 55V
V
OUT
= 70V
V
IN
= 5V
EFFICIENCY vs. LOAD CURRENT
MAX15031 toc03
LOAD CURRENT (mA)
EFFICIENCY (%)
321
10
20
30
40
50
60
70
0
04
V
IN
= 3.3V
V
IN
= 5V
V
IN
= 8V
V
OUT
= 70V
MINIMUM STARTUP VOLTAGE
vs. LOAD CURRENT
MAX15031 toc04
LOAD CURRENT (mA)
MINIMUM STARTUP VOLTAGE (V)
321
2.49
2.50
2.51
2.52
2.53
2.54
2.55
2.48
04
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX15031 toc05
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
1097 82 3 4 5 61
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
011
V
FB
= 1.4V
T
A
= +125°C
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
NO-LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
XMAX15031 toc06
SUPPLY VOLTAGE (V)
NO-LOAD SUPPLY CURRENT (mA)
10987654
10
20
30
40
50
60
0
311
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
EXITING SHUTDOWN
MAX15031 toc07
1ms/div
V
OUT
50V/div
I
L
500mA/div
V
SHDN
2V/div
3V
0V
0mA
I
OUT
= 1mA
ENTERING SHUTDOWN
MAX15031 toc08
4ms/div
OUTPUT VOLTAGE
50V/div
INDUCTOR CURRENT
500mA/div
SHUTDOWN VOLTAGE
2V/div
3V
70V
0V
0mA
I
LOAD
= 1mA
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