MAX5953A MAXIM [Maxim Integrated Products], MAX5953A Datasheet - Page 2

• Manufacturer Part Number: MAX5953A
• Description: IEEE 802.3af PD Interface and PWM Controllers with Integrated Power MOSFETs
• Manufacturer: MAXIM [Maxim Integrated Products]

ABSOLUTE MAXIMUM RATINGS
V+ to V
OUT, PGOOD, PGOOD to V
RCLASS, GATE to V
UVLO to V
PGOOD to OUT ........................................... -0.3V to (V+ + 0.3V)
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
DCUVLO, 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
PPWM to GND....................................-0.3V to (V
IEEE 802.3af PD Interface and PWM Controllers
with Integrated Power MOSFETs
ELECTRICAL CHARACTERISTICS
(V
otherwise noted. Typical values are at T
*As per JEDEC 51 standard.
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.
2
POWERED DEVICE (PD) INTERFACE
DETECTION MODE
Input Offset Current
Effective Differential Input
Resistance (Note 3)
CLASSIFICATION MODE
Classification Current Turn-Off
Threshold
Classification Current
POWER MODE
Operating Supply Voltage
Operating Supply Current
Default Power Turn-On Voltage
Default Power Turn-Off Voltage
IN
XFRMRL to GND.................................................-0.3V to +80V
RTCT to GND..................................................... -0.3V to +12V
_______________________________________________________________________________________
= (V+ - V
EE
................................................................-0.3V to +90V
EE
PARAMETER
............................................................ -0.3V to +8V
EE
) = 48V, GATE = PGOOD =
EE
...........................................-0.3V to +12V
EE
.....................-0.3V to (V+ + 0.3V)
V
V
V
SYMBOL
J
I
TH,CLASS
UVLO, ON
UVLO,OFF
OFFSET
I
= +25°C. All voltages are referenced to V
CLASS
V
dR
I
IN
IN
PGOOD = unconnected, GND = OUT, HVIN = V+, UVLO = V
REGOUT
V
V
V
V
to 20V,
R
25.5kΩ
(Notes 5, 6)
V
Measure at V+, not including R
GATE = V
V
increasing
V
IN
IN
IN
IN
IN
IN
IN
DISC
= 1.4V to 10.1V (Note 2)
= 1.4V, up to 10.1V with 1V step
rising (Note 4)
= 12.6V
= (V+ - V
decreasing, MAX5953A/MAX5953C
+ 0.3V)
=
EE
, HVIN = GND = OUT
EE
CONDITIONS
Class 0, R
Class 1, R
Class 2, R
Class 3, R
Class 4, R
)
MAX5953A/MAX5953C
MAX5953B/MAX5953D
Maximum Input/Output Current (Continuous)
Continuous Power Dissipation* (T
Operating Ambient Temperature Range ................0°C to +85°C
Operating Junction Temperature Range ..............0°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
θ
OUT to V
V+, RCLASS to V
UVLO, PGOOD, PGOOD to V
GATE to V
REGOUT to GND ............................................................50mA
DRNH, XFRMRH, XFRMRL, SRC to GND (Average),
PPWM to GND ..............................................................±20mA
48-Pin TQFN 7mm X 7mm
(derate 27.8mW/°C above +70°C) .............................2222mW
JA
T
................................................................................36°C/W
J
RCLASS
RCLASS
RCLASS
RCLASS
RCLASS
= +125°C..................................................................0.9A
EE
EE
EE
DISC
, unless otherwise noted.) (Note 1)
....................................................................500mA
= 10kΩ
= 732Ω
= 392Ω
= 255Ω
= 178Ω
....................................................................80mA
,
EE
.........................................................70mA
17.29
26.45
20.8
9.17
36.6
37.4
34.3
MIN
550
30
0
EE
A
EE
.....................................20mA
= +70°C)
, T
TYP
21.8
38.6
35.4
0.4
J
= 0°C to +125°C, unless
11.83
19.71
29.55
MAX
22.5
41.4
40.2
36.9
10
67
2
1
UNITS
mA
mA
kΩ
µA
V
V
V
V