Specification	TPS23751PWPR

Auxiliary Sense	True
Current - Supply	1.8 mA
Internal Switch(s)	True
Mounting Type	Surface Mount
Number of Channels	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	16-PowerTSSOP
Package / Case	0.173 in, 4.4 mm Width
Power - Max [Max]	25.5 W
Standards	802.3at (PoE+), 802.3af (PoE)
Supplier Device Package	16-HTSSOP
Type	Controller (PD), DC/DC
Voltage - Supply [Max]	57 V
Voltage - Supply [Min]	0 V

TPS23751 Series

IEEE 802.3at PoE interface with flyback DC-DC controller

Part	Auxiliary Sense	Number of Channels	Mounting Type	Supplier Device Package	Voltage - Supply [Min]	Voltage - Supply [Max]	Type	Operating Temperature [Max]	Operating Temperature [Min]	Internal Switch(s)	Current - Supply	Power - Max [Max]	Standards	Package / Case	Package / Case
Texas Instruments TPS23751PWP		1	Surface Mount	16-HTSSOP	0 V	57 V	Controller (PD) DC/DC	85 °C	-40 °C		1.8 mA	25.5 W	802.3af (PoE) 802.3at (PoE+)	16-PowerTSSOP	0.173 in 4.4 mm Width
Texas Instruments TPS23751PWPR		1	Surface Mount	16-HTSSOP	0 V	57 V	Controller (PD) DC/DC	85 °C	-40 °C		1.8 mA	25.5 W	802.3af (PoE) 802.3at (PoE+)	16-PowerTSSOP	0.173 in 4.4 mm Width

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 2.85
		10	$ 2.56
		25	$ 2.42
		100	$ 2.10
		250	$ 1.99
		500	$ 1.79
		1000	$ 1.51
	Digi-Reel®	1	$ 2.85
		10	$ 2.56
		25	$ 2.42
		100	$ 2.10
		250	$ 1.99
		500	$ 1.79
		1000	$ 1.51
	Tape & Reel (TR)	2000	$ 1.33
Texas Instruments	LARGE T&R	1	$ 1.73
		100	$ 1.43
		250	$ 1.02
		1000	$ 0.77

Description

General part information

TPS23751 Series

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 for applications requiring high efficiency over a wide load range.

The PoE interface implements type-2 hardware classification per IEEE 802.3at. It also includes an auxiliary power detect (APD) input and a disable function (DEN). A 0.5-Ω, 100-V pass MOSFET 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 is enhanced at light loads by disabling synchronous rectification and entering variable frequency operation (VFO).