MAX5074
Power IC with Integrated MOSFETs for Isolated IEEE
802.3af PD and Telecom Power-Supply Applications
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
HVIN
= 12V, C
INBIAS
= 1µF, C
REGOUT
= 2.2µF, R
RTCT
= 25kΩ, C
RTCT
= 100pF, C
BST
= 0.22µF, V
CSS
= V
CS
= 0V, V
RAMP
= V
UVLO
= 3V,
T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C, unless otherwise noted.) (Note 1)
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.
HVIN, INBIAS, DRNH, XFRMRH,
XFRMRL to GND.................................................-0.3V to +80V
BST to GND ............................................................-0.3V to +95V
BST to XFRMRH .....................................................-0.3V to +12V
PGND to GND .......................................................-0.3V to +0.3V
UVLO, RAMP, CSS, OPTO, FLTINT, RCFF,
RTCT to GND......................................................-0.3V to +12V
SRC, CS to GND.......................................................-0.3V to +6V
REGOUT, DRVIN to GND .......................................-0.3V to +12V
REGOUT to HVIN ...................................................-80V to +0.3V
REGOUT to INBIAS ................................................-80V to +0.3V
REGOUT Current ................................................................50mA
PPWM to GND....................................-0.3V to (REGOUT + 0.3V)
PPWM Current .................................................................±20mA
DRNH, XFRMRH, XRFMRL, SRC Continuous Current (Average)
T
J
= +125°C......................................................................0.9A
T
J
= +150°C......................................................................0.6A
Continuous Power Dissipation (T
A
= +70°C)
20-Pin TSSOP-EP (derate 21.7mW/°C above +70°C) ....1.739W
20-Pin TSSOP-EP (θ
JA
) ................................................46°C/W
Operating Temperature Range .........................-40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(32 paginas)
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