Datasheet

TPS23753
SLVS853C –JUNE 2008–REVISED JANUARY 2010 www.ti.com
REVISION HISTORY
Changes from Original (June 2008) to Revision A Page
• Changed data sheet From: Product Preview To: Production ............................................................................................... 1
• Changed the TPS23753 Functional Block Diagram. ............................................................................................................ 6
• Added the Typical Characteristics section. ........................................................................................................................... 9
Changes from Revision A (June 2008) to Revision B Page
• Changed the ESDS statement. ............................................................................................................................................. 2
Changes from Revision B (September 2009) to Revision C Page
• Changed From: IEEE 802.3-2005 To: IEEE 802.3 throughout the data sheet. ................................................................... 1
• Changed the 1st paragraph in the Description From: The PoE implementation supports the IEEE 802.3-2005
(previously 802.3af) standard, 12.95 W (13 W) PD. To: The PoE implementation supports the IEEE 802.3-2005. An
IEEE802.3at type 1 device is equivalent to IEEE802.3-2008 (originally 802.3af) standard as a 13 W type 1 PD. ............. 1
• Changed Note 1 in the Dissipations Ratings table to include additional information. .......................................................... 2
• Changed section Classic PoE Overview second paragraph: From: The PD may return the default 12.95W (often
referred to as 13W) current-encoded class, or one of four other choices. To: The PD may return the default 13W
current-encoded class, or one of four other choices .......................................................................................................... 13
• Changed Table 2 - Notes for the Class 4 row .................................................................................................................... 15
• Added text and Figure 25 to the Protection section ........................................................................................................... 22
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