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MAX5935CAX+T

Description
hot swap voltage controllers quad network power controller
CategoryWireless rf/communication    Telecom circuit   
File Size693KB,44 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric Compare View All

MAX5935CAX+T Overview

hot swap voltage controllers quad network power controller

MAX5935CAX+T Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
package instructionSSOP,
Reach Compliance Codecompli
JESD-30 codeR-PDSO-G36
JESD-609 codee3
length15.375 mm
Humidity sensitivity level1
Number of functions1
Number of terminals36
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Maximum seat height2.65 mm
surface mountYES
technologyBICMOS
Telecom integrated circuit typesTELECOM CIRCUIT
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.8 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.5 mm
Base Number Matches1
19-3412; Rev 3; 5/07
Quad Network Power Controller
for Power-Over-LAN
General Description
The MAX5935 quad network power controller is designed
for use in IEEE 802.3af-compliant power sourcing equip-
ment (PSE). The device provides power devices (PD) dis-
covery, classification, current limit, and both DC and AC
load disconnect detections. The MAX5935 can be used
in either endpoint PSE (LAN switches/routers) or midspan
PSE (power injector) applications.
The MAX5935 can operate autonomously or be con-
trolled by software through an I
2
C-compatible interface.
Separate input and output data lines (SDAIN and
SDAOUT) allow usage with optocouplers. The
MAX5935 is a slave device. Its four address inputs
allow 16 unique MAX5935 addresses. A separate
INT
output and four independent shutdown inputs (SHD_)
allow fast response from a fault to port shutdown. A
RESET
input allows hardware reset of the device. A
special Watchdog feature allows the hardware to
gracefully take over control if the software crashes. A
cadence timing feature allows the MAX5935 to be used
in midspan systems.
The MAX5935 is fully software configurable and program-
mable. A class-over-current detection function enables
system power management to detect if a PD draws more
current than the allowable amount for its class. Other fea-
tures are input under/overvoltage lockout, overtempera-
ture protection, output voltage slew-rate limit during
startup, power-good, and fault status. The MAX5935’s
programmability includes gate charging current, current-
limit threshold, startup timeout, overcurrent timeout,
autorestart duty cycle, PD disconnect AC detection
threshold, and PD disconnect detection timeout.
The MAX5935 is available in a 36-pin SSOP package
and is rated for both extended (-40°C to +85°C) and
commercial (0°C to +70°C) temperature ranges.
Features
IEEE 802.3af Compliant
Controls Four Independent, -48V-Powered
Ethernet Ports in Either Endpoint or Midspan PSE
Applications
Wide Digital Power Input, V
DIG
, Common-Mode
Range: V
EE
to (AGND + 7.7V)
PD Violation of Class Current Protection
PD Detection and Classification
Provides Both DC and AC Load Removal
Detections
I
2
C-Compatible, 3-Wire Serial Interface
Fully Programmable and Configurable Operation
Through I
2
C Interface
Current Foldback and Duty-Cycle-
Controlled/Programmable Current Limit
Short-Circuit Protection with Fast Gate Pulldown
Direct Fast Shutdown Control Capability
Programmable Direct Interrupt Output
Watchdog Mode Enable Hardware Graceful
Takeover
MAX5935
Ordering Information
PART
MAX5935CAX
MAX5935CAX+
MAX5935EAX
MAX5935EAX+
TEMP RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
36 SSOP
36 SSOP
36 SSOP
36 SSOP
PKG
CODE
A36-2
A36-2
A36-2
A36-2
Pin Configuration
TOP VIEW
RESET
1
2
3
4
5
6
7
8
9
36 OSC_IN
35 AUTO
34 OUT1
33 GATE1
32 SENSE1
MIDSPAN
INT
Applications
Power-Sourcing Equipment (PSE)
Power-Over-LAN/Power-Over-Ethernet
Switches/Routers
Midspan Power Injectors
SCL
SDAOUT
SDAIN
A3
A2
A1
MAX5935
31 OUT2
30 GATE2
29 SENSE2
28 V
EE
27 OUT3
26 GATE3
25 SENSE3
24 OUT4
23 GATE4
22 SENSE4
21 AGND
20 SHD4
19 SHD3
A0 10
DET1 11
DET2 12
DET3 13
DET4 14
DGND 15
V
DD
16
SHD1 17
Typical Operating Circuits appear at end of data sheet.
SHD2 18
SSOP
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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Description hot swap voltage controllers quad network power controller hot swap voltage controllers quad network power controller hot swap voltage controllers quad network power controller
Is it lead-free? Lead free Lead free Lead free
Is it Rohs certified? conform to conform to conform to
package instruction SSOP, SSOP, SSOP,
Reach Compliance Code compli compli compli
JESD-30 code R-PDSO-G36 R-PDSO-G36 R-PDSO-G36
length 15.375 mm 15.375 mm 15.375 mm
Number of functions 1 1 1
Number of terminals 36 36 36
Maximum operating temperature 70 °C 85 °C 85 °C
Minimum operating temperature - -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP SSOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Maximum seat height 2.65 mm 2.65 mm 2.65 mm
surface mount YES YES YES
technology BICMOS BICMOS BICMOS
Telecom integrated circuit types TELECOM CIRCUIT TELECOM CIRCUIT TELECOM CIRCUIT
Temperature level COMMERCIAL INDUSTRIAL INDUSTRIAL
Terminal form GULL WING GULL WING GULL WING
Terminal pitch 0.8 mm 0.8 mm 0.8 mm
Terminal location DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width 7.5 mm 7.5 mm 7.5 mm
Base Number Matches 1 1 1
JESD-609 code e3 - e3
Humidity sensitivity level 1 - 1
Terminal surface Matte Tin (Sn) - Matte Tin (Sn)
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