MAX15031 Datasheet, PDF (5/16 Pages) Maxim Integrated Products – 80V, 300mW Boost Converter and Current Monitor for APD Bias Applications

80V, 300mW Boost Converter and Current
Monitor for APD Bias Applications
Typical Operating Characteristics (continued)
(V_PWR = V_IN = 3.3V, V_OUT = 70V, circuit of Figure 3 (Figure 4 for V_IN > 5.5V), unless otherwise noted.)
LIGHT-LOAD SWITCHING
WAVEFORM WITH RC FILTER
MAX15031 toc09
I_OUT = 0.1mA, V_BIAS = 70V
V_BIAS
AC-COUPLED
1mV/div
V_LX
50V/div
0V
I_L
500mA/div
0mA
HEAVY-LOAD SWITCHING
WAVEFORM WITH RC FILTER
MAX15031 toc10
I_OUT = 4mA, V_BIAS = 70V
V_BIAS
AC-COUPLED
1mV/div
V_LX
50V/div
0V
I_L
500mA/div
0mA
1µs/div
1µs/div
70.0
69.8
69.6
69.4
69.2
69.0
68.8
68.6
68.4
68.2
68.0
0
LOAD-TRANSIENT RESPONSE
MAX15031 toc11
VOUT
AC-COUPLED
200mV/div
LINE-TRANSIENT RESPONSE
MAX15031 toc12
VIN
2V/div
3.3V
100ms/div
ILOAD
5mA/div
0mA
V_OUT = 70V
V_IN = 3.3V
100ms/div
V_OUT = 70V
I_OUT = 1mA
tRISE = 50µs
VOUT
AC-COUPLED
100mV/div
LOAD REGULATION
1
2
3
4
5
LOAD CURRENT (mA)
110
100
90
80
70
60
50
40
30
20
10
0
3
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
A
B
C
D
EF
A: VOUT = 30V, B: VOUT = 35V, C: VOUT = 45V,
D: VOUT = 55V, E: VOUT = 60V, F: VOUT = 72V
4 5 6 7 8 9 10 11
INPUT VOLTAGE (V)
LX LEAKAGE CURRENT
vs. TEMPERATURE
200
180
CURRENT INTO
LX PIN
160
140
120
100
80
60
40
20
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
BIAS CURRENT
vs. BIAS VOLTAGE
10
1
I_APD = 2mA
0.1
I_APD = 500nA
0.01
0
10 20 30 40 50 60 70 80
BIAS VOLTAGE (V)
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