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| 型號： | TPS23753PW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.505 A SWITCHING CONTROLLER, 273 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | GREEN, PLASTIC, TSSOP-14 |
| 文件頁數(shù)： | 1/30頁 |
| 文件大小： | 823K |
| 代理商： | TPS23753PW |
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www.ti.com
SLVS853C – JUNE 2008 – REVISED JANUARY 2010
IEEE 802.3 PoE INTERFACE AND ISOLATED CONVERTER CONTROLLER
Check for Samples: TPS23753
1
FEATURES
DESCRIPTION
Optimized for Isolated Converters
Complete PoE Interface
The TPS23753 is a combined Power over Ethernet
(PoE)
powered
device
(PD)
interface
and
Adapter ORing Support
current-mode dc/dc controller optimized specifically
12 V Adapter Support
for
isolated
converter
designs.
The
PoE
Programmable Frequency with Synch.
implementation supports the IEEE 802.3at standard
as a 13 W, type 1 PD. The requirements for an IEEE
Robust 100 V, 0.7
Hotswap MOSFET
802.3at type 1 device are a superset of IEEE
Small TSSOP 14 Package
802.3-2008 (originally 802.3af) requirements.
15 kV / 8 kV System Level ESD Capable
The TPS23753 supports a number of input-voltage
–40°C to 125°C Junction Temperature Range
ORing options including highest voltage, external
Design Procedure Application Note - SLVA305
adapter preference, and PoE preference.
Adapter ORing Application Note - SLVA306
The PoE interface features an external detection
signature pin that can also be used to disable the
APPLICATIONS
internal hotswap MOSFET. This allows the PoE
function to be turned off. Classification can be
IEEE 802.3at Compliant Powered Devices
programmed to any of the defined types with a single
VoIP Telephones
resistor.
Access Points
The dc/dc controller features a bootstrap startup
Security Cameras
mechanism with an internal, switched current source.
This provides the advantages of cycling overload fault
protection without the constant power loss of a pull up
resistor.
The programmable oscillator may be synchronized to
a higher-frequency external timing reference.
Figure 1. Basic TPS23753 Implementation
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright 2008–2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS23753PW | 制造商:Texas Instruments 功能描述:Controller IC |
| TPS23753PWG4 | 功能描述:熱插拔功率分布 PoE Interface & Iso Cnvrtr & Cntrlr RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS23753PWR | 功能描述:熱插拔功率分布 Interface and Iso Cnvrtr and Cntrlr RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS23753PWRG4 | 功能描述:熱插拔功率分布 PoE Interface & Iso Cnvrtr & Cntrlr RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS23754EVM-383 | 功能描述:電源管理IC開發(fā)工具 TPS23754 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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