MAX15031 Datasheet, PDF (6/16 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.)
BIAS CURRENT
vs. APD CURRENT
10
V_BIAS = 70V
1
BIAS CURRENT
vs. TEMPERATURE
10
I_APD = 2mA
1
0.1
0.1
I_APD = 500nA
0.01
0.0001 0.001 0.01 0.1
1
10
APD CURRENT (mA)
0.01
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
5
4
3
2
1
0
-1
-2
-3
-4
-5
0.1
GAIN ERROR
vs. APD CURRENT
V_BIAS = 70V
1
10 100 1000 10,000
IAPD (µA)
GAIN ERROR
vs. TEMPERATURE
1.0
I_APD = 2mA
I_APD = 500µA
0.5
GAIN ERROR
vs. BIAS VOLTAGE
0.80
0.60
I_APD = 5µA
0
-0.5
I_APD = 5µA
I_APD = 50µA
0.40 _{IAPD = 50µA}
0.20
-1.0
I_APD = 500nA
-1.5
-2.0
-2.5
V_BIAS = 70V
-3.0
-40 -25 -10 5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
0
-0.20
I_APD = 500nA
-0.40
I_APD = 500µA
-0.60
I_APD = 2mA
-0.80
10 20 30 40 50 60 70 80
BIAS VOLTAGE (V)
APD TRANSIENT RESPONSE
MAX15031 toc22
VAPD
AC-COUPLED
70V
2V/div
20µs/div
IAPD
2.5mA/div
0mA
IMOUT
0.25mA/div
0mA
STARTUP DELAY
MAX15031 toc23
VBIAS
20V/div
3V
200µs/div
IAPD = 500nA
IMOUT
20nA/div
0nA
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