MAX5969BETB+T Maxim Integrated Products, MAX5969BETB+T Datasheet

MAX5969BETB+T

Manufacturer Part Number

MAX5969BETB+T

Description

IC PWR OVER ETHERNET SW 10TDFN

Manufacturer

Maxim Integrated Products

Type

Power over Ethernet Switch (PoE)r

Datasheet

1.MAX5969BETBT.pdf (14 pages)

Specifications of MAX5969BETB+T

Applications

Remote Peripherals (Industrial Controls, Cameras, Data Access)

Internal Switch(s)

Yes

Current Limit

Adjustable

Voltage - Supply

60V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

10-WFDFN Exposed Pad

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

MAX5969BETB+TTR

Current page: 1 of 14
Download datasheet (2Mb)

19-5008; Rev 0; 12/09

The MAX5969A/MAX5969B provide a complete interface

for a powered device (PD) to comply with the IEEE ®

802.3af/at standard in a power-over-Ethernet (PoE) sys-

tem. The MAX5969A/MAX5969B provide the PD with a

detection signature, classification signature, and an inte-

grated isolation power switch with inrush current control.

During the inrush period, the MAX5969A/MAX5969B limit

the current to less than 180mA before switching to the

higher current limit (720mA to 880mA) when the isolation

power MOSFET is fully enhanced. The devices feature

an input UVLO with wide hysteresis and long deglitch

time to compensate for twisted-pair cable resistive drop

and to assure glitch-free transition during power-on/-off

conditions. The MAX5969A/MAX5969B can withstand up

to 100V at the input.

The MAX5969A/MAX5969B support a 2-event classifica-

tion method as specified in the IEEE 802.3at standard

and provide a signal to indicate when probed by Type 2

power-sourcing equipment (PSE). The devices detect

the presence of a wall adapter power-source connec-

tion and allow a smooth switchover from the PoE power

source to the wall power adapter.

The MAX5969A/MAX5969B also provide a power-good

(PG) signal, two-step current limit and foldback, over-

temperature protection, and di/dt limit.

The MAX5969A/MAX5969B are available in a space-sav-

ing, 10-pin, 3mm x 3mm, TDFN power package. These

devices are rated over the -40NC to +85NC extended

temperature range.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

IEEE is a registered service mark of the Institute of Electrical

and Electronics Engineers, Inc.

WiMAX is a trademark of WiMAX Forum.

IEEE 802.3af/at-Compliant, Powered Device Interface

IEEE 802.3af/at Powered Devices

IP Phones, Wireless Access Nodes, IP Security

Cameras

WiMAXK Base Station

_______________________________________________________________ Maxim Integrated Products 1

Controllers with

General Description

Applications

Integrated Power MOSFET

S IEEE 802.3af/at Compliant

S 2-Event Classification

S Simplified Wall Adapter Interface

S PoE Classification 0 to 5

S 100V Input Absolute Maximum Rating

S Inrush Current Limit of 180mA Maximum

S Current Limit During Normal Operation Between

S Current Limit and Foldback

S Legacy UVLO at 36V (MAX5969A)

S IEEE 802.3af/at-Compliant, 40V UVLO (MAX5969B)

S Overtemperature Protection

S Thermally Enhanced, 3mm x 3mm, 10-Pin TDFN

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

MAX5969AETB+

MAX5969BETB+

720mA and 880mA

TOP VIEW

PART

*EP = EXPOSED PAD. CONNECT TO V

N.C.

DET

I.C.

-40NC to +85NC 10 TDFN-EP*

TEMP RANGE

EP*

(3mm × 3mm)

Ordering Information

MAX5969A

MAX5969B

TDFN

Pin Configuration

PIN-

PACKAGE

Features

CLS

2EC

WAD

RTN

THRESHOLD

UVLO

35.4

38.6

(V)

Related parts for MAX5969BETB+T

MAX5969BETB+T Summary of contents

Page 1

... IEEE is a registered service mark of the Institute of Electrical and Electronics Engineers, Inc. WiMAX is a trademark of WiMAX Forum. _______________________________________________________________ Maxim Integrated Products 1 _______________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Integrated Power MOSFET S IEEE 802 ...

Page 2

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with ABSOLUTE MAXIMUM RATINGS ..........................................................-0.3V to +100V DD SS DET, RTN, WAD, PG, 2EC to V ....................... -0.3V to +100V SS CLS to V ..............................................................-0.3V to +6V SS Maximum Current on ...

Page 3

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with ELECTRICAL CHARACTERISTICS (continued 48V 24.9kω DET unless otherwise noted - PARAMETER SYMBOL V ...

Page 4

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with ELECTRICAL CHARACTERISTICS (continued 48V 24.9kω DET unless otherwise noted - Note 3: All ...

Page 5

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with ( 54V 24.9kω DET INPUT CURRENT (DETECTION) vs. INPUT VOLTAGE 0 VDD DET R = ...

Page 6

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with ( 54V 24.9kω DET INRUSH CONTROL WAVEFORM WITH TYPE 2 CLASSIFICATION MAX5969A toc10 USING TYPICAL APPLICATION CIRCUIT 2EC PULLED UP TO ...

Page 7

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with PIN NAME 1 V Positive Supply Input. Connect a 68nF (min) bypass capacitor between DET Detection Resistor Input. Connect a signature resistor (R 3 N.C. No Connection. Not internally connected. ...

Page 8

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with REGULATOR 1.23V V DD 11.6V/4V DET I SWITCH SWITCH 8 ______________________________________________________________________________________ Integrated Power MOSFET V DD 22.8V/22V D SET Q CLR Q 5V 46µA ...

Page 9

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with GND RJ-45 AND BRIDGE R DET RECTIFIER 24.9kI 68nF SMAJ58A R CLS -54V _______________________________________________________________________________________ Integrated Power MOSFET V 2EC DD PG DET WAD MAX5969A MAX5969B CLS 24V/48V BATTERY V RTN SS Typical Operating ...

Page 10

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Detailed Description Operating Modes Depending on the input voltage (V MAX5969A/MAX5969B operate in four different modes: PD detection, PD classification, mark event, and PD power. The devices enter PD detection mode when the ...

Page 11

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with When the MAX5969A/MAX5969B are powered by a Type 2 PSE, the 2-event identification output 2EC asserts low after the internal isolation n-channel MOSFET is fully turned on. 2EC current sink is turned off ...

Page 12

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Applications Information Operation with 12V Adapter Careful PCB layout is critical to achieve high efficiency and low EMI. Follow these layout guidelines for optimum performance: 1) Place the input capacitor, classification resistor, and ...

Page 13

IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with GND GND V AC 68nF V SMAJ58A AC -54V GND 33kI 1.37MI 51.5kI PG UVLO/EN UFLG FB MAX15000 10kI COMP CS CS 4.99kI ______________________________________________________________________________________ Integrated Power MOSFET 2EC 24.9kI DET ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 14 2009 Maxim Integrated Products © ...

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