MAX5945EAX+ Maxim Integrated Products, MAX5945EAX+ Datasheet - Page 2

• Manufacturer Part Number: MAX5945EAX+
• Description: IC NETWORK PWR CTRL 36-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5945EAX+

• Controller Type: Network Power Controller
• Interface: I²C
• Voltage - Supply: 3.3V
• Current - Supply: 4.2mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to V
AGND, DGND, DET_, V
GATE_ (internally clamped, Note 1)....................-0.3V to +11.4V
SENSE_ ..................................................................-0.3V to +24V
V
INT and SDAOUT to DGND....................................-0.3V to +12V
Maximum Current into INT, SDAOUT, DET_ .......................80mA
Quad Network Power Controller
for Power-Over-LAN
Note 1: GATE_ is internally clamped to 11.4V above V
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
(AGND = +32V to +60V, V
values are at AGND = +48V, DGND = +48V, V
negative otherwise.)
2
POWER SUPPLIES
Operating Voltage Range
Supply Currents
GATE DRIVER AND CLAMPING
GATE_ Pullup Current
Weak GATE_ Pulldown Current
Maximum Pulldown Current
External Gate Drive
CURRENT LIMIT
Current-Limit Clamp Voltage
Overcurrent Threshold After
Startup
Foldback Initial OUT_ Voltage
Foldback Final OUT_ Voltage
DD
OSC_IN, SCL, SDAIN, OUT_ and AUTO............-0.3V to +80V
AUTO to DGND ....................................................-0.3V to +7V
, RESET, A3, A2, A1, A0, SHD_, OSC_IN, SCL, SDAIN and
_______________________________________________________________________________________
PARAMETER
DD
EE
, RESET, A3, A2, A1, A0, SHD_,
, unless otherwise noted.)
EE
= 0V, V
V
SYMBOL
V
V
V
FLBK_END
V
V
FLBK_ST
FLT_LIM
SU_LIM
I
DGND
I
AGND
V
I
V
PDW
I
I
PDS
DIG
EE
PU
DD
GS
DD
to DGND = +3.3V, all voltages are referenced to V
V
V
V
OUT_ = V
all logic inputs open, SCL = SDAIN = V
INT and SDAOUT open; measured at AGND
in power mode after GATE_ pullup
All logic inputs high, measured at V
Power mode, gate drive on, V
SHD_ = DGND, V
V
V
Maximum V
V
Overcurrent V
threshold allowed for
t ≤ t
V
V
voltage starts folding back
V
voltage reaches V
AGND
DD
DD
SENSE
GATE
OUT_
OUT_
OUT_
OUT_
DD
FAULT
to V
to V
= (DGND + 3.3V), T
= V
- V
= V
- V
- V
- V
= 1V, V
EE
DGND
DGND
EE
EE
EE
EE
EE
after startup;
EE
EE
. Driving GATE_ higher than 11.4V above V
SENSE_
, above which the current-limit trip
, above which the current-limit trip
, SENSE_ = V
, power mode, gate drive on
(Note 3)
SENSE_
, V
, V
GATE_
DGND
DGND
GATE_
CONDITIONS
TH_FB
allowed during current limit,
= V
= V
= V
Maximum Power Dissipation
Operating Temperature Ranges:
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
= V
EE
EE
36-Pin SSOP (derate 11.4mW/°C above +70°C) .........941mW
MAX5945EAX ..................................................-40°C to +85°C
MAX5945CAX .....................................................0°C to +70°C
A
AGND
EE
Default, class 0,
class 3, class 4
Class 1
Class 2
EE
= +25°C. Currents are positive when entering the pin and
, DET_ = AGND,
+ 2V
GATE
+ 5V
= V
DD
EE
DD
(Note 2)
,
EE
178.5
, unless otherwise noted. Typical
1.71
MIN
202
EE
-40
3.0
32
30
49
90
0
9
may damage the device.
TYP
100
212
4.2
2.7
-50
40
10
30
50
MAX
5.50
220
196
104
-60
5.5
6.8
5.6
60
60
50
11
61
UNITS
mA
mA
mV
mV
µA
µA
V
V
V
V