特性 Features

? Compliant to IEEE? Std. 802.3af-2003

? Supports Type 1 operation for IEEE? 802.3at-

2009 and IEEE? 802.3bt-2018

? Integrated DC-DC Controller with robust 150V,

0.7Ω typ. supporting both isolated and nonisolated

applications

? Low RDS_ON Hot-Swap FET, 0.49Ω typ.

? Adjustable switching frequency from 100kHz

to 800kHz

? Programmable DC-DC Current Limit

? Integrated Surge Protection for 15kV/8kV

System level ESD Compliance

? Exceptional EMI performance

? Integrated Short-Circuit Protection

? Over temperature protection

? RoHS & Pb Free 4x4 mm, 16 lead TQFN

Package

? Industrial temperature range (-40°C to +85°C)

Applications

? Pan, tilt and zoom (PTZ), security and web

cameras

? Voice over IP (VoIP) phones

? Wireless LAN access points, biometric

authentication

? Point-of-sale (POS) terminals, RFID terminals

? Thin clients and IoT appliances

? Fiber-to-the-home (FTTH) terminals

Brief Description

The KTA1136 is a single-chip, highly integrated CMOS

solution for 13W Power over Ethernet (PoE) Powered

Devices. Applications include Voice over IP (VoIP)

Phones, Wireless LAN Access Point, Security Cameras,

WiMAX Terminals, Point-of-Sales Terminals, RFID

Readers, Thin Clients and Notebook computers.

The KTA1136 integrates input surge protection, a PD

controller with a 100V hot-swap FET, a DC-DC controller,

and a robust 150V switching power MOSFET. The

KTA1136 implements all the physical layer Powered

Device (PD) functionality, as required by IEEE 802.3af-

2003 standards. This includes PD detection,

classification, under-voltage lockout (UVLO), and

Hot-Swap FET integration. The KTA1136 also supports

Type 1 operation for IEEE 802.3at-2009 and IEEE

802.3bt-2018.

The KTA1136 has been architected to address both EM

emission concerns and surge/over-voltage protection in

PoE applications. The chip implements many design

features that minimize transmission of system commonmode

noise onto the Unshielded Twisted Pair (UTP). Onchip

integration of surge protection provides faster

response to surge events and limits stray surge current

from passing through sensitive circuits, such as the

Ethernet PHY. The device is designed to provide safe,

low-impedance discharge paths directly to the earth

ground, resulting in superior reliability and circuit

protection.