MAX15059 datasheet(3/15 Pages) MAXIM

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76V, 300mW Boost Converter and Current

Monitor for APD Bias Applications

ELECTRICAL CHARACTERISTICS (continued)

(VIN = VSHDN = VCNTRL = 3.3V, CIN = 1FF, VPGND = VSGND = 0V, VBIAS = 40V, LX = APD = CLAMP = ILIM = unconnected, VMOUT

= 0V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC.) (Note 2)

Note 2: All MIN/MAX parameters are tested at TA = +25NC. Limits overtemperature are guaranteed by design.

Note 3: Guaranteed by design and not production tested.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

CNTRL-to-REF Transition

Threshold

VFB = VREF above this voltage

1.3

CNTRL Input-Bias Current

VCNTRL = VFB_SET, TA = +25NC

500

CURRENT MONITOR

Bias Voltage Range

VBIAS

Bias Quiescent Current

IBIAS

IAPD = 500nA

MAX15059A

150

250

MAX15059B

150

250

IAPD = 2mA

MAX15059A

MAX15059B

Voltage Drop

VDROP

IAPD = 2mA, VDROP = VBIAS - VAPD

2.7

3.5

Dynamic Output Resistance at

MOUT

RMOUT

RMOUT = DVMOUT/DIMOUT,

IAPD = 2.5mA

MAX15059A

APD Current-Step Response

Step load on IAPD = 20FA to 1mA

MOUT Output Leakage

Output Clamp Voltage

VMOUT -

VCLAMP

Forward diode current = 500FA

0.45

0.7

0.95

Output Clamp Leakage Current

VBIAS = VCLAMP = 76V

MOUT Voltage Range

VMOUT

10V P VBIAS P 76V, 0 P IAPD P 1mA, CLAMP

is unconnected

VBIAS -

2.7

Current Gain

IMOUT/IAPD

IAPD = 500nA

MAX15059A

0. 95

1.1

mA/mA

MAX15059B

0.19

0.2

0.22

IAPD = 2mA

MAX15059A

0.965

1.035

MAX15059B

0.193

0.2

0.207

Power-Supply Rejection Ratio

PSRR

(DIMOUT/IMOUT)/DVBIAS,

VBIAS = 10V to 76V and IAPD

= 5FA to 1mA (Note 3)

MAX15059A

300

610

ppm/V

MAX15059B

300

700

APD Input Current Limit

ILIM_APD

4.6

5.2

Current-Limit Adjustment Range

9.75kI R RLIM R 0

0.9

5.2

Power-Up Settling Time

IMOUT settles to within 0.1%,

10nF connected from APD to

ground

IAPD = 500nA

7.5

IAPD = 2.5mA

LOGIC I/O

SHDN Input Voltage Low

VIL

0.8

SHDN Input Voltage High

VIH

2.1

ILIM Output Voltage Low

VOL

ILIM = 2mA

0.1

ILIM Output Leakage Current

IOH

TA = +25NC

THERMAL PROTECTION

Thermal-Shutdown Temperature

Temperature rising

+150

Thermal-Shutdown Hysteresis

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