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參數(shù)資料
| 型號： | TPS2383BPMRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP64 |
| 封裝： | GREEN, LQFP-64 |
| 文件頁數(shù)： | 4/27頁 |
| 文件大小： | 415K |
| 代理商： | TPS2383BPMRG4 |
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www.ti.com
DUAL COLOR LED DRIVERS
TPS2383B
SLUS565G – JULY 2003 – REVISED AUGUST 2005
APPLICATION INFORMATION (continued)
Upon power-up the master sequencer is enabled and running after a POR delay and begins acting on register
commands. A shorter POR delay releases the reset on the I2C function and registers before the port reset
removed. This arrangement allows for register setup and polling over the I2C bus quickly upon power up but
ensures that power cannot be applied until the power supply is fully energized and stable. The default power-up
state for all command registers is a null condition. The state sequence order of the TPS2383B is discovery,
classification and power delivery if a POE compliant device is detected on the other end of the data cable.
The master sequencer powers-up in a default free-running mode. The TPS2383B also has a JOG mode. By
setting the JOG_MODE register bit high, the master sequencer then no longer runs freely, but increments to the
next sequential port each time the JOG register bit is set to a logic 1. The JOG bit is self-cleared once the port
increments to the next position.
Sequencing starts with port 1 and ends with port 8 and then repeats. The port sequencer signals status
information to the master sequencer and skips over disabled ports. When the master sequencer detects an
enabled port, it pauses at that port until discovery, classification and power-up is complete before proceeding to
the next. When the master sequencer reaches a powered port, it pauses and take a reading of the ports run-time
current and/or voltage before proceeding to the next port. When a powered PD load is disconnected, the
disconnect event can be detected the next time that port is selected by the master sequencer. When the disable
bit of a powered port is set in the corresponding register, that operation is completed the next time the master
sequencer selects that port. An overcurrent fault event shuts down the offending port independent of any
sequencer state.
The LED driver pins (L1 through L8) can be used to drive single or dual, color LEDs. These LEDs are intended to
provide installation or service personnel with the necessary information to install and troubleshoot the system
infrastructure. The Ln pins have internal tri-state drivers. These LEDs can be controlled directly from the I2C
registers. The reset state of all the LEDs is tri-state. Cross-conduction logic disables both internal high- and
low-side MOSFETS if an attempt is made to enable both transistors on a given port. These are high current
(10-mA) drivers that can be used for other applications such as the drive of optocouplers or electromechanical
devices, or can just be used as an 8-bit data port.
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| TPS2383PM | 功能描述:熱插拔功率分布 Pwr Over Ethernet Sw Side Manager 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 |
| TPS2383PMG4 | 功能描述:熱插拔功率分布 Pwr Over Ethernet Sw Side Manager 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 |
| TPS2383PMR | 功能描述:熱插拔功率分布 Pwr Over Ethernet Sw Side Manager 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 |
| TPS2383PMRG4 | 功能描述:熱插拔功率分布 Pwr Over Ethernet Sw Side Manager 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 |
| TPS23841PAP | 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 |
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