MAX15059 datasheet(8/15 Pages) MAXIM

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76V, 300mW Boost Converter and Current

Monitor for APD Bias Applications

Typical Operating Characteristics (continued)

(VIN = 3.3V, VOUT = 70V, TA = +25°C, unless otherwise noted.)

SHORT-CIRCUIT RESPONSE

MAX15059 toc26

µs/div

IMOUT

2mA/div

IILIM

5V/div

VAPD

50V/div

RLIM = 3.16kI

VOLTAGE DROP vs. APD CURRENT

IAPD (µA)

1000

100

0.5

1.0

1.5

2.0

2.5

3.0

0.1

10,000

TA = +85°C

TA = +25°C

TA = -40°C

401

402

403

404

405

406

407

408

409

410

400

SWITCHING FREQUENCY

vs. TEMPERATURE

TEMPERATURE (°C)

-15

-40

SWITCHING FREQUENCY

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

5.0

4.5

4.0

3.5

3.0

2.5

5.5

392

394

396

398

400

402

404

406

408

410

390

SWITCHING FREQUENCY AND

DUTY CYCLE vs. LOAD CURRENT

MAX15059 toc30

LOAD CURRENT (mA)

3.5

3.0

2.0 2.5

1.0 1.5

0.5

4.0

392

394

396

398

400

402

404

406

408

410

390

DUTY CYCLE

SWITCHING FREQUENCY

1.222

1.224

1.226

1.228

1.230

1.232

1.234

1.236

1.238

1.240

1.220

FB SET POINT vs. TEMPERATURE

TEMPERATURE (°C)

-15

-40

VIN = 3.3V

APD OUTPUT RIPPLE VOLTAGE

(0.1µF FROM APD TO GROUND, VBIAS = 70V, LAPD = 1mA)

MAX15059 toc32

µs/div

VAPD

AC-COUPLED, 70V

1mV/div

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