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MAX15031

80V, 300mW Boost Converter and Current

Monitor for APD Bias Applications

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= V

PWR

= 3.3V. V

SHDN

= 3.3V. C

= C

PWR

= 10µF. C

= 10nF, V

CNTRL

= V

. V

RLIM

= 0. V

PGND

= V

SGND

= 0. V

BIAS

= 40V.

APD = unconnected. CLAMP = unconnected. ILIM = unconnected, MOUT = unconnected. T

= T

= -40°C to +125°C, unless other-

wise noted. Typical values are at T

= +25°C.) (Note 2)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial

PWR, IN to SGND ...................................................-0.3V to +12V

LX to PGND ............................................................-0.3V to +80V

BIAS, APD to SGND ...............................................-0.3V to +80V

SHDN to SGND............................................-0.3V to (V

+ 0.3V)

CLAMP to SGND......................................-0.3V to (V

BIAS

+ 0.3V)

FB, ILIM, RLIM, CP, CN, CNTRL to SGND .............-0.3V to +12V

PGND to SGND .....................................................-0.3V to +0.3V

MOUT to SGND ....................................-0.3V to (V

CLAMP

+ 0.3V)

Continuous Power Dissipation

16-Pin TQFN (derate 25mW/°C above +70°C) ............2000mW

Thermal Resistance (Note 1)

....................................................................................40°C/W

......................................................................................6°C/W

Operating Temperature Range .........................-40°C to +125°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

2.7 5.5

Supply Voltage Range V

, V

PWR

CP connected to IN, C

= open 5.5 11

= 1.4V, no switching 1 2

Supply Current I

SUPPLY

= 11V, V

= 1.4V (no switching),

= open, CP = IN

1.2 3

Undervoltage Lockout Threshold V

UVLO

rising 2.375 2.5 2.675 V

Undervoltage Lockout Hysteresis V

UVLO_HYS

100 mV

Shutdown Current I

IN_SHDN

SHDN pulled low 2 µA

Shutdown Input Bias Current I

BIAS_SHDN

BIAS

= 3.3V, V

SHDN

= 0 30 µA

BOOST CONVERTER

Output-Voltage Adjustment

Range

76 V

= V

PWR

= 5V 360 400 440

Switching Frequency f

2.9V ≤ V

PWR

≤ 11V, V

= V

PWR

352 400 448

kHz

Maximum Duty Cycle D

CLK

2.9V ≤ V

PWR

≤ 11V, V

= V

PWR

86 90 94 %

FB Set-Point Voltage V

1.2201 1.245 1.2699 V

FB Input Bias Current I

100 nA

PWR

= V

= 2.9V,

= 5.5V

= 100mA

PWR

= V

= 5.5V,

= 10V

PWR

= V

= 5.5V 1 2

Internal Switch On-Resistance R

= 100mA,

= V

IN V

PWR

= V

= 11V 1 2

Ω

Peak Switch Current Limit I

LIM_LX

0.8 1.2 1.6 A

LX Leakage Current V

= 36V 1 µA

Line Regulation

2.9V ≤ V

PWR

≤ 11V, V

PWR

= V

LOAD

= 4.5mA

0.2 %

Load Regulation 0 ≤ I

LOAD

≤ 4.5mA 1 %

1 2 3 4 5 6 7 ... 16 17

MAX15031 1

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