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TPS23851DCER PDF预览

TPS23851DCER

更新时间: 2024-11-11 12:16:11
品牌 Logo 应用领域
德州仪器 - TI 电源电路电源管理电路光电二极管控制器以太网
页数 文件大小 规格书
62页 1342K
描述
Quad IEEE 802.3at Power-Over-Ethernet PSE Controller

TPS23851DCER 技术参数

是否无铅:含铅是否Rohs认证:符合
生命周期:Obsolete零件包装代码:SSOP
包装说明:SSOP-36针数:36
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:1 week
风险等级:5.79Is Samacsys:N
可调阈值:YES模拟集成电路 - 其他类型:POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码:R-PDSO-G36JESD-609代码:e4
长度:15.385 mm湿度敏感等级:3
信道数量:4功能数量:1
端子数量:36最高工作温度:85 °C
最低工作温度:-20 °C封装主体材料:PLASTIC/EPOXY
封装代码:SSOP封装等效代码:SOP36,.4,32
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, SHRINK PITCH
峰值回流温度(摄氏度):260电源:-48,3.3 V
认证状态:Not Qualified座面最大高度:2.64 mm
子类别:Power Management Circuits最大供电电流 (Isup):5 mA
最大供电电压 (Vsup):3.5 V最小供电电压 (Vsup):3 V
标称供电电压 (Vsup):3.3 V表面贴装:YES
温度等级:OTHER端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式:GULL WING端子节距:0.8 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.5 mmBase Number Matches:1

TPS23851DCER 数据手册

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TPS23851  
www.ti.com  
SLUSAB3 SEPTEMBER 2010  
Quad IEEE 802.3at Power-Over-Ethernet PSE Controller  
Check for Samples: TPS23851  
1
FEATURES  
DESCRIPTION  
2
INDUSTRY STANDARD PSE  
Fully IEEE Std 802.3at-2009 Compliant  
Four Independent PSE Ports  
The TPS23851 is a quad-power controller engineered  
to insert power onto Ethernet cable according to IEEE  
Std 802.3at-2009 (or 802.3at) for Power Sourcing  
Equipment (PSE). The PSE controller can detect  
Powered devices (PDs) that have a valid signature,  
determine the power requirements of the devices  
according to the classification, and apply power to the  
devices, limited per 802.3at. Based on an industry  
standard register set, the PSE controller is software  
compatible with other PSE controllers for basic  
functionality  
PD Detection and Classification  
Current Limit Output Protection with  
Foldback for Reduced Cost FET  
AC and DC Disconnect Detection  
I2C™ Communication  
4 Bit Address for 64-Port Systems  
Flexible Operation Modes  
Automatic  
Beyond the industry standard operation, the  
TPS23851 operates with enhanced features. Port  
current trip point can be set to all classification  
thresholds of IEEE Std 802.3-2005 (or 802.3af) and  
can be programmed up to more than 720 mA when  
used with a LLDP classification stack, complying with  
802.3at. The TPS23851 supports AC and DC  
Semi Automatic  
Processor Controlled  
Pin Compatible with LTC4259A &  
MAX5952/MAX5945/MAX5935  
ENHANCED FEATURES  
disconnection with  
a precision on-chip, 110-Hz  
Never Fooled 4-Point Detection  
oscillator for AC waveform generation. The PSE also  
contains four 14-bit A/D converters that constantly  
monitor voltage and current on each port. This  
information is available on the I2C bus for power  
management. The unique converter integrating  
topology used in the TPS23851 provides inherent  
filtering for a robust solution.  
Onboard Precision 110-Hz AC Disconnect  
Sine Wave Oscillator  
I2C Watchdog for Failsafe Operation  
Individual and Multiplexed Port Shutdown  
Modes  
Per Port A/D Converters  
Typical Application  
14-Bit Resolution for Precision  
Measurements  
3.3 V  
16  
15  
21  
0.1mF  
100 V  
Real-time Voltage Monitoring  
Real-time Current Monitoring  
Inherent Filtering  
VDD DGND AGND  
0.47 mF  
1 kW  
4
5
6
3
1
SCL  
SDAO  
DET  
PORT  
10 kW  
TPS23851  
Extended -20°C to 125°C Temperature  
Operation  
SDAI  
INT  
OUT  
GAT  
SEN  
802.3at Type 2 Mode  
RESET  
High-Power Mode  
VEE  
28  
Classification through Link Layer  
Discovery Protocol (LLDP)  
0.5 W  
UDG-10111  
Note: Only one port shown.  
Available in 36-lead SSOP Package  
-48 V  
APPLICATIONS  
Ethernet Switches and Routers  
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.  
2
I2C is a trademark of Royal Philips Electronics.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2010, Texas Instruments Incorporated  

TPS23851DCER 替代型号

型号 品牌 替代类型 描述 数据表
TPS23851DCE TI

完全替代

Quad IEEE 802.3at Power-Over-Ethernet PSE Controller

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