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LTC4264

Features: · Complete High Power PD Interface Controller· IEEE 802.3af® Compliant· Onboard 750mA Power MOSFET· Complementary Power Good Outputs· Flexible Auxiliary Power Options· Precision Dual Current Limit with Disable· Programmable Classifi cation Current to 75mA· Onboard 25k Signatu...

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SeekIC No. : 004402537 Detail

LTC4264: Features: · Complete High Power PD Interface Controller· IEEE 802.3af® Compliant· Onboard 750mA Power MOSFET· Complementary Power Good Outputs· Flexible Auxiliary Power Options· Precision ...

LTC4264 Data Sheet

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Part Number:
LTC4264
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· Complete High Power PD Interface Controller
· IEEE 802.3af® Compliant
· Onboard 750mA Power MOSFET
· Complementary Power Good Outputs
· Flexible Auxiliary Power Options
· Precision Dual Current Limit with Disable
· Programmable Classifi cation Current to 75mA
· Onboard 25k Signature Resistor with Disable
· Undervoltage Lockout
· Complete Thermal Overload Protection
·  Available in Low Profi le (4mm × 3mm) DFN Package


Application

·  802.11n Access Points
·  High Power VoIP Video Phones
·  RFID Reader Systems
·  PTZ Security Cameras and Surveillance Equipment


Pinout

Connection Diagram


Specifications

VIN Voltage .............................................. 0.3V to 90V
VOUT Voltage ....... VIN + 90V (and GND) to VIN 0.3V
SHDN Voltage ........................... VIN + 90V to VIN 0.3V
RCLASS, ILIM_EN Voltage ............. VIN + 7V to VIN 0.3V
PWRGD Voltage (Note 3)
Low Impedance Source .......VOUT + 11V to VOUT 0.3V
Current Fed ..............................................................5mA
PWRGD Voltage ........................ VIN + 80V to VIN 0.3V
PWRGD Current ......................................................10mA
RCLASS Current .....................................................100mA
Operating Ambient Temperature Range
LTC4264C ...................................................... 0 to 70
LTC4264I ................................................... 40 to 85
Junction Temperature ............................................. 150
Storage Temperature Range ................... 65 to 150


Description

The LTC®4264 is an integrated Powered Device (PD) interface controller intended for IEEE 802.3af Power over Ethernet (PoE) and high power PoE applications up to 35W. By including a precision dual current limit, the LTC4264 keeps inrush below the IEEE802.3af current limit levels to ensure interoperability success while allowing for high power PD operation. The LTC4264 includes a fi eld-proven power MOSFET delivering up to 750mA to the PD load while maintaining compliance with the IEEE802.3af standard. Complementary power good outputs allow the LTC4264 to interface directly with a host of DC/DC converter products. The LTC4264 provides a complete signature and power interface solution for PD designs by incorporating the 25k signature resistor, classifi cation circuitry, input current limit, undervoltage lockout, thermal overload protection, signature disable and power good signaling.

The LTC4264 PD interface controller can be used along with a variety of Linear Technology DC/DC converter products to provide a complete, cost effective power solution for high power PD applications.

The LTC4264 is available in the space-saving low profi le (4mm × 3mm) DFN package.




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