max5074aup Maxim Integrated Products, Inc., max5074aup Datasheet - Page 2

• Manufacturer Part Number: max5074aup
• Description: Power Ic With Integrated Mosfets For Isolated Ieee 802.3af Pd And Telecom Power-supply Applications
• Manufacturer: Maxim Integrated Products, Inc.

ABSOLUTE MAXIMUM RATINGS
HVIN, INBIAS, DRNH, XFRMRH,
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,
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
Power IC with Integrated MOSFETs for Isolated IEEE
802.3af PD and Telecom Power-Supply Applications
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.
ELECTRICAL CHARACTERISTICS
(V
T
2
Input Supply Range
OSCILLATOR (RTCT)
PWM Frequency
Maximum PWM Duty Cycle
Maximum RTCT Frequency
RTCT Peak Trip Level
RTCT Valley Trip Level
RTCT Input Bias Current
RTCT Discharge MOSFET
R
RTCT Discharge Pulse Width
LOOK-AHEAD LOGIC (PPWM)
PPWM to XFRMRL Output
Propagation Delay
PPWM Output High
PPWM Output Low
PWM COMPARATOR (OPTO, RAMP, RCFF)
Common-Mode Range
Input Offset Voltage
Input Bias Current
RAMP to XFRMRL Propagation
Delay
Minimum OPTO Voltage
Minimum RCFF Voltage
A
HVIN
XFRMRL to GND.................................................-0.3V to +80V
RTCT to GND......................................................-0.3V to +12V
DS(ON)
= T
_______________________________________________________________________________________
J
= 12V, C
= -40°C to +125°C, unless otherwise noted. Typical values are at T
PARAMETER
INBIAS
= 1µF, C
REGOUT
SYMBOL
f
V
RTCTMAX
= 2.2µF, R
CM-PWM
t
V
D
PPWM
V
V
V
HVIN
MAX
f
OH
TH
OL
S
RTCT
R
R
(Note 2)
Sinking 20mA
PPWM rising to XFRMRL falling
Sourcing 2mA
Sinking 2mA
From RAMP (50mV overdrive) rising to
XFRMRL rising
V
RCFF sinking 2mA
CSS
RTCT
RTCT
= 25kΩ, C
= 0V, OPTO sinking 2mA
= 25kΩ, C
= 25kΩ, C
RTCT
CONDITIONS
RTCT
RTCT
= 100pF, C
PPWM to GND....................................-0.3V to (REGOUT + 0.3V)
PPWM Current .................................................................±20mA
DRNH, XFRMRH, XRFMRL, SRC Continuous Current (Average)
Continuous Power Dissipation (T
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
20-Pin TSSOP-EP (derate 21.7mW/°C above +70°C) ....1.739W
T
T
20-Pin TSSOP-EP (θ
= 100pF
= 100pF
J
J
= +125°C......................................................................0.9A
= +150°C......................................................................0.6A
A
= +25°C, unless otherwise noted.) (Note 1)
BST
= 0.22µF, V
JA
) ................................................46°C/W
CSS
MIN
7.0
11
-2
= V
0
A
CS
= +70°C)
V
V
= 0V, V
REGOUT
REGOUT
0.51 x
0.04 x
TYP
1.47
2.18
256
110
100
±1
47
30
50
10
1
RAMP
MAX
11.0
0.4
5.5
+2
76
60
= V
UVLO
UNITS
MHz
kHz
= 3V,
mV
µA
µA
%
ns
ns
ns
Ω
V
V
V
V
V
V
V
V