Typical operating characteristics – Rainbow Electronics MAX15031 User Manual
Page 4
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 (%)
3
2
1
10
20
30
40
50
60
70
0
0
4
V
OUT
= 30V
V
OUT
= 55V
V
OUT
= 70V
V
IN
= 3.3V
EFFICIENCY vs. LOAD CURRENT
MAX15031 toc02
LOAD CURRENT (mA)
EFFICIENCY (%)
3
2
1
10
20
30
40
50
60
70
0
0
4
V
OUT
= 30V
V
OUT
= 55V
V
OUT
= 70V
V
IN
= 5V
EFFICIENCY vs. LOAD CURRENT
MAX15031 toc03
LOAD CURRENT (mA)
EFFICIENCY (%)
3
2
1
10
20
30
40
50
60
70
0
0
4
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)
3
2
1
2.49
2.50
2.51
2.52
2.53
2.54
2.55
2.48
0
4
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX15031 toc05
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
10
9
7
8
2
3
4
5
6
1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
0
11
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)
10
9
8
7
6
5
4
10
20
30
40
50
60
0
3
11
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