AC-DC and DC-DC Peak-Current-Mode Converters

for Flyback/Boost Applications

MAX17498A/MAX17498B/MAX17498C

 Maxim Integrated Products 2

IN to SGND............................................................-0.3V to +40V

EN/UVLO to SGND......................................... -0.3V to IN + 0.3V

OVI to SGND .............................................. -0.3V to VCC + 0.3V

VCC to SGND..........................................................-0.3V to +6V

SS, LIM, EA-, EA+, COMP, SLOPE,

REF to SGND........................................-0.3V to (VCC + 0.3V)

LX to SGND...........................................................-0.3V to +70V

PGOOD to SGND....................................................-0.3V to +6V

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

Continuous Power Dissipation (Single-Layer Board)

TQFN (derate 20.8mW/°C above +70°C)..................1700mW

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

Storage Temperature Range............................ -65°C to +160°C

Junction Temperature (continuous) ................................+150°C

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

Soldering Temperature (reflow) ......................................+260°C

ABSOLUTE MAXIMUM RATINGS

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

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

tion 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.

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IN Voltage Range (VIN)

MAX17498A

4.5

29

V

MAX17498B/MAX17498C

4.5

36

IN Supply Startup Current Under

UVLO

22

36

µA

IN Supply Current (IIN)

1.8

3

mA

2.7

4.5

IN Boostrap UVLO Rising

Threshold

MAX17498A

19

20.5

22

V

MAX17498B/MAX17498C

3.9

4.15

4.4

IN Bootstrap UVLO Falling

Threshold

3.65

3.95

4.25

V

IN Clamp Voltage

31

33.5

36

V

4.8

5

5.2

V

160

300

mV

50

100

mA

ENABLE (EN/UVLO)

EN/UVLO Threshold

Rising

1.18

1.23

1.28

V

Falling

1.11

1.17

1.21

EN/UVLO Input Leakage Current

-100

0

+100

nA