參數(shù)資料
型號(hào)： TPS23841PAPRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64
封裝： GREEN, PLASTIC, QFP-64
文件頁(yè)數(shù)： 4/48頁(yè)
文件大?。?/td> 1364K
代理商： TPS23841PAPRG4
www.ti.com
AUTO MODE FUNCTIONAL DESCRIPTION
Auto Mode
SLUS745A – NOVEMBER 2006 – REVISED MAY 2007
Auto mode (AM, MS = 0) operation is the basic approach for applying power to IEEE compliant PD’s. When AM
has been selected the TPS23841 automatically performs the following functions:
Discovery of IEEE 802.3af compliant powered devices (PD's)
Classification
Power delivery
Port over/under voltage detection, (if enabled, see Over/Under Voltage Fault section)
Port over current detection (570 mA < I
PORT < 665 mA
Port maximum current limit (600 mA < I
PORT < 700 mA)
DC Disconnect (5 mA < I
PORT < 10 mA)
Thermal shutdown protection (TSD), (T
J > 150°C)
Internal oscillator watchdog
In AM the contents of all read registers are available via the I2C interface. In addition all control registers except
for the function bits can be written. This supports a semi-auto mode where the TPS23841 auto detects compliant
PD's while a host can access the A/D registers and class information and then implement power management
(including turning a port off, responding to faults, etc).
The write registers that are still active in AM are:
All ports disable – Common Control register 0001b
Over/Under Voltage Faults – Common Control register 0001b
Software reset – Common Control register 0001b
Disconnect disable – Port Control 1 register 0010b
Discovery fault disable – Port Control 1 register 0010b
Port enable – Port Control 2 register 0011b
For alternative B, semi-auto mode implementations which will manipulate the all ports disable or Port Enable
bits, please contact the factory for additional application information.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS23841PJD 功能描述:熱插拔功率分布 HP Wide Volt Range Quad Part Ethernet 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS23841PJDG4 功能描述:熱插拔功率分布 HP Wide Volt Range Quad Part Ethernet 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS23841PJDR 功能描述:熱插拔功率分布 HP Wide Volt Range Quad Part Ethernet 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS23841PJDRG4 功能描述:熱插拔功率分布 HP Wide Volt Range Quad Part Ethernet 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS2384APAP 功能描述:電源開關(guān) IC - POE / LAN Quad Ethernet Pwr Sourcing Equ Pwr Mgr RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時(shí)間（最大值）:13 ns 關(guān)閉時(shí)間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6
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