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.