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| 型号： | TPS23757PW |
| 厂商： | Texas Instruments |
| 文件页数： | 32/39页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR POE PD IEEE 20TSSOP |
| 标准包装： | 70 |
| 类型： | 以太网供电开关（PoE） |
| 应用： | 远程外设（工业控制，相机，数据访问） |
| 内部开关： | 是 |
| 电流限制： | 465mA |
| 电源电压： | 0 V ~ 57 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1012 (CN2011-ZH PDF) |
| 其它名称： | 296-24949-5 |
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TPS23757
SLVS948D – JULY 2009 – REVISED NOVEMBER 2013
REVISION HISTORY
www.ti.com
Changes from Revision Original (August 2009) to Revision A
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Changed the ESDS statement. ............................................................................................................................................. 2
Changes from Revision A (September 2009) to Revision B
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Changed From: IEEE 802.3at (draft) To: IEEE 802.3at throughout the data sheet ............................................................. 1
Changed the Thermal resistance note in the DISSIPATION RATINGS table to include additional information .................. 3
Changed Table 1 - Notes for the Class 4 row. ..................................................................................................................... 8
Changed the section - Using DEN to disable PoE ............................................................................................................. 22
Changes from Revision B (December 2009) to Revision C
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Changed the application report From: SLAU303 To: SLAU535 ......................................................................................... 23
Changes from Revision C (June 2012) to Revision D
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Changed Table 1 , Class 0 and Class 3 Max From: 12.95 To: 13; Class 4 Min From: 12.95 To: 13 ................................... 8
Changrd Equation 5 , From: – I PPD To: + I PPD ........................................................................................................................ 9
Changed Table 2 , PD INPUT POWER (max) From: 12.92(13) W To 13 W; POWER ≤ 12.95 W To: ≤ 13 W, and
POWER > 12.95 W To: > 13 W .......................................................................................................................................... 16
Changed text in the Detection section From: :( Δ V / Δ I ) between 23.75 k ? and 26.25 k ? at the PI." To: "( Δ V / Δ I )
between 23.7 k ? and 26.3 k ? at the PI." ........................................................................................................................... 17
Changed text in the Maintain Power Signature section From: "75 ms every 225 ms) and an ac impedance lower
than 26.25 k ? in parallel with 0.05 μ F" To: "75 ms every 325 ms) and an ac impedance lower than 26.3 k ? in
parallel with 0.05 μ F" .......................................................................................................................................................... 18
Added text to the Startup and Converter Operation: "Additional loading applied between V VDD and V RTN during the
inrush state may prevent successful PD and subsequent converter start up." .................................................................. 18
Changrd text in the Detection Resistor, R DEN From: "between 23.75 k ? and 26.25 k ? , or 25 k ? ± 5%: To: ".between
23.7 k ? and 26.3 k ? , or 25 k ? ± 5%" ................................................................................................................................ 24
Changed the equation for Calculate R PPD1 . From: –I PPD to: + I PPD , From: – 5 μA to + 5 μA, and From: = 32.26 To: =
31.64 ................................................................................................................................................................................... 25
Changed the equation for Check PPD turn on and PPD turn off voltages (a), From: –I PPD to: + I PPD , and From: =
18.07 To: = 18.4 ................................................................................................................................................................. 25
Changed the equation for Check PPD turn on and PPD turn off voltages (b), From: –I PPD to: + I PPD , and From: =
14.54 To: = 14.75 ............................................................................................................................................................... 25
Added text to the end of the PPD Pin Divider Network, R PPD1 , R PPD2 section .................................................................... 25
32
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS23757PWR | 功能描述:热插拔功率分布 Hi Eff PoE Interface & DC/DC Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2375D | 功能描述:热插拔功率分布 IEEE 802.3af PoE Pwr Device Cntrler RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2375D | 制造商:Texas Instruments 功能描述:POWER OVER ETHERNET ((NW)) |
| TPS2375DG4 | 功能描述:热插拔功率分布 IEEE 802.3af PoE Pwr Device Cntrler RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2375DR | 功能描述:热插拔功率分布 IEEE 802.3af PoE Pwr Device Cntrler RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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