MAX15031 Datasheet, PDF (7/16 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.)
STARTUP DELAY
MAX15031 toc24
VAPD
20V/div
3V
IMOUT
50µA/div
100µs/div
IAPD = 2mA
0nA
STARTUP DELAY
MAX15031 toc25
VAPD
2V/div
0V
100µs/div
IAPD = 500nA
VBIAS = 5V
IMOUT
20nA/div
0nA
STARTUP DELAY
MAX15031 toc26
VBIAS
2V/div
SHORT-CIRCUIT RESPONSE
MAX15031 toc27
ILIM
2V/div
0V
0V
40µs/div
IAPD = 2mA
VBIAS = 5V
IMOUT
50µA/div
0nA
IBIAS
2mA/div
40ms/div
VBIAS = 70V
TA = +85°C _0mA
RLIM = 2kΩ
VOLTAGE DROP
vs. APD CURRENT
1.40
1.20
1.00
TA = -40°C ^{TA = +25°C}
0.80
0.60
0.40
0.20
0
0.1
TA = +85°C
TA = +125°C
1
10 100 1000 10,000
IAPD (µA)
SWITCHING FREQUENCY
vs. TEMPERATURE
500
480
460
440
420
400
380
360
340
320
300
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
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