text.skipToContent text.skipToNavigation


IEEE 802.3at PoE interface with flyback DC-DC controller

Inventory: 5,455

Download data sheet for TPS23751
  |   View additional information for TPS23751

Packaging information

Package | Pins HTSSOP (PWP) | 16
Operating temperature range (℃) I (-40 to 85)
Package qty | Carrier: 90 | TUBE
View more packaging information

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • IEEE 802.3at Classification With Status Flag
  • High Efficiency Solutions Over Wide Load Range
  • Powers Up to 25.5 W PDs
  • Robust 100 V, 0.5 Ω Hotswap MOSFET
  • Synchronous Rectifier Disable Signal
  • PowerPAD™ TSSOP Packages
  • Complete PoE Interface Plus DC-DC Controller
  • Adapter ORing Support
  • Programmable Frequency
  • TPS23752 Supports Ultra-Low Power Sleep Modes
  • –40°C to 125°C Junction Temperature Range

All trademarks are the property of their respective owners.


The TPS23751 is a 16-pin integrated circuit that combines a Power-over-Ethernet (PoE)powered device (PD) interface and a current-mode DC-DC controller optimized specifically forapplications requiring high efficiency over a wide load range.

The PoE interface implements type-2 hardware classification per IEEE 802.3at. It alsoincludes an auxiliary power detect (APD) input and a disable function (DEN). A 0.5-Ω, 100-V passMOSFET minimizes heat dissipation and maximizes power utilization.

The DC-DC controller features internal soft-start, a bootstrap startup current source,current-mode control with slope compensation, blanking, and current limiting. Efficiency isenhanced at light loads by disabling synchronous rectification and entering variable frequencyoperation (VFO).

The TPS23752 is a 20-pin extended version of the TPS23751 with the addition of a SleepMode feature. Sleep Mode disables the converter to minimize power consumption while stillgenerating the Maintain Power Signature (MPS) required by IEEE802.3at.

Qty Price
1-99 $2.35
100-249 $2.06
250-999 $1.44
1,000+ $1.16

Alternative carriers

Part number TPS23751PWPR
Package qty | Carrier 2,000 | LARGE T&R
Custom reel may be available
Inventory 13,873
Qty | Price (USD) 1ku | $0.97