TPS2370 Status: NRND

IEEE802.3af Power Interface Switch For Power-Over-Ethernet (PoE) Powered Devices (PD's)

View RoHS Compliant Devices

Alert me about changes<br/>to this product

Alert me about changes
to this product

Product is Not Recommended for New Design (NRND)

Replaced By:

TPS2375 The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.TPS2375 is an enhanced (2nd generation) replacement for TPS2370.

Datasheet

IEEE 802.3 af for Power Over Ethernet (PoE) Powered Devices (Rev. C) (PDF 396 KB) 1592 views
03 Mar 2004

Product Information

Features

Integrated Power Interface Switch for IEEE 802.3af Powered Devices (PDs)
Provides PD Detection Signature
Provides PD Classification Signature (Class 0-4)
Programmable Inrush Current Limit
Internal 0.3- Low-Side FET
Interfaces to DC/DC Soft-Start for DC/DC Enable
Internal Thermal Protection — Disconnects PD Load
Minimal External Parts Count
8-Pin SOIC, 8-Pin TSSOP Packages
APPLICATIONS
- VoIP Phones
- Internet Appliances
- Wireless LAN Access Points
- Bluetooth™ Access Points

PowerPAD is a trademark of Texas Instruments. Bluetooth is a trademark of Telefonaktiebolaget LM Ericsson.

Description

Acting as an interface between the Power Source Equipment (PSE) and the Powered Device (PD), the TPS2370 performs all detection, classification, inrush current limiting, and switch FET control that is necessary for compliance with the IEEE 802.3af Standard. An internal 0.3- FET provides maximum power delivery. As an additional feature, the TPS2370 interfaces with the enable/soft-start signal of a dc-to-dc converter, eliminating the need to have an accurate UVLO in the dc-to-dc converter.

At low-input voltages (1.8 V to 10 V), the TPS2370 draws less than 12 µA, allowing accurate sensing of the external 24.9-k discovery resistor. At input voltages between 15 V and 20 V, an external resistor sets the level of current to be drawn during classification mode. TPS2370 is compatible with current as well as voltage measurement schemes for classification. Above 20-V input, the classification current is shut off, reducing internal power dissipation.

The TPS2370 drives an internal low-side FET for control of the return side of the power path. The internal FET switch is turned on when the input voltage reaches 40 V and above. When the input voltage decreases, the FET remains on until the input voltage drops to below 30 V.

During initial turn-on of the switch (inrush mode), an external resistor is used to program the inrush current, allowing a wide range of capacitor values to be used at the load. According to IEEE 802.3 af specification, inrush current of 400 mA is allowed only for 50 ms, limiting the load capacitor to approximately 180 µF. A programmable inrush current limit removes this limitation, allowing a larger capacitor to be used with a lower inrush current limit.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
TPS2370D	NRND	0 to 70	2.75 \| 100u	SOIC (D) \| 8	View	75 \| TUBE	Not Available
TPS2370DG4	NRND	0 to 70	2.75 \| 100u	SOIC (D) \| 8	View	75 \| TUBE	Not Available
TPS2370DR	NRND	0 to 70	2.50 \| 100u	SOIC (D) \| 8	View	2500 \| LARGE T&R	Not Available
TPS2370DRG4	NRND	0 to 70	2.50 \| 100u	SOIC (D) \| 8	View	2500 \| LARGE T&R	Not Available
TPS2370PW	NRND	0 to 70	2.75 \| 100u	TSSOP (PW) \| 8	View	150 \| TUBE	Not Available
TPS2370PWG4	NRND	0 to 70	2.75 \| 100u	TSSOP (PW) \| 8	View	150 \| TUBE	Not Available
TPS2370PWR	NRND	0 to 70	2.50 \| 100u	TSSOP (PW) \| 8	View	2000 \| LARGE T&R	Not Available
TPS2370PWRG4	NRND	0 to 70	2.50 \| 100u	TSSOP (PW) \| 8	View	2000 \| LARGE T&R			Not Available

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

	TI Inventory Status	Reported Distributor Inventory
TPS2370D	As of 8:48 AM GMT, 03 Jul 2009	As of 8:48 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	Arrow	25
	4 Weeks	Americas	Rochester Electronics	25
TPS2370DG4	As of 8:48 AM GMT, 03 Jul 2009	As of 8:48 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	None Reported View Distributors
TPS2370DR	As of 8:48 AM GMT, 03 Jul 2009	As of 8:48 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	Rochester Electronics	>1k
TPS2370DRG4	As of 8:48 AM GMT, 03 Jul 2009	As of 8:48 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	None Reported View Distributors
TPS2370PW	As of 8:48 AM GMT, 03 Jul 2009	As of 8:48 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	1 Week	Americas	DigiKey	18
			Mouser Electronics	148
			Rochester Electronics	>1k
TPS2370PWG4	As of 8:48 AM GMT, 03 Jul 2009	As of 8:48 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	1 Week	Americas	DigiKey	Available
	1 Week	Europe	EBV Elektronik	5
TPS2370PWR	As of 8:48 AM GMT, 03 Jul 2009	As of 8:48 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
		Americas	Rochester Electronics	>1k
		Asia	WPI	10
TPS2370PWRG4	As of 8:48 AM GMT, 03 Jul 2009	As of 8:48 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
TPS2370D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS2370DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS2370DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS2370DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS2370PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS2370PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS2370PWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS2370PWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for TPS2370

Datasheet

IEEE 802.3 af for Power Over Ethernet (PoE) Powered Devices (Rev. C) (PDF 396 KB) 1592 views
03 Mar 2004

Application Notes

Powered Device Controllers Comparison (HTM 8 KB) 1649 views
22 Apr 2004 Read Abstract

View Application Notes for Powered Devices

Support and Community

Customer Tags

No Tags are Available for this Part Number

TPS2370 Status: NRND

IEEE802.3af Power Interface Switch For Power-Over-Ethernet (PoE) Powered Devices (PD's)

Product is Not Recommended for New Design (NRND)

Replaced By:

Most Popular Links

Datasheet

Product Information

Features

Description

Pricing / Packaging / CAD Design Tools / Samples

Inventory

Quality & Lead (Pb)-Free Data

Technical Documents

Datasheet

Application Notes

Support and Community

Customer Tags

Other Support