Rainbow-electronics MAX15031 Manual do Utilizador descarregar pdf (Página 7)

MAX15031

80V, 300mW Boost Converter and Current

Monitor for APD Bias Applications

_______________________________________________________________________________________ 7

STARTUP DELAY

MAX15031 toc24

100µs/div

APD

20V/div

MOUT

50µA/div

0nA

APD

= 2mA

STARTUP DELAY

MAX15031 toc25

100µs/div

APD

2V/div

MOUT

20nA/div

0nA

APD

= 500nA

BIAS

= 5V

STARTUP DELAY

MAX15031 toc26

40µs/div

BIAS

2V/div

MOUT

50µA/div

0nA

APD

= 2mA

BIAS

= 5V

SHORT-CIRCUIT RESPONSE

MAX15031 toc27

40ms/div

LIM

2V/div

BIAS

2mA/div

0mA

BIAS

= 70V

= +85°C

LIM

= 2kΩ

Typical Operating Characteristics (continued)

PWR

= V

= 3.3V, V

OUT

= 70V, circuit of Figure 3 (Figure 4 for V

> 5.5V), unless otherwise noted.)

VOLTAGE DROP

vs. APD CURRENT

MAX15031 toc28

APD

(µA)

BIAS

- V

APD

(V)

1000100101

0.20

0.40

0.60

0.80

1.00

1.20

1.40

0.1 10,000

= +25°C

= -40°C

= +125°C

= +85°C

SWITCHING FREQUENCY

vs. TEMPERATURE

MAX15031 toc29

TEMPERATURE (°C)

SWITCHING FREQUENCY (kHz)

1109565 80-10 5 20 35 50-25

320

340

360

380

400

420

440

460

480

500

300

-40 125

1 2 3 4 5 6 7 8 9 10 11 12 ... 16 17

MAX15031 1

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