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器件3D模型￥ 31.527
TPS23861PW 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
电池管理芯片
封装:
TSSOP-28
描述:
TEXAS INSTRUMENTS TPS23861PW 芯片, 电源控制器, PSE, 以太网供电, 3.3V, TSSOP-28
Pictures:
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页面导航:
引脚图在P5P23P24Hot
典型应用电路图在P39P87
原理图在P1P22P25P85
封装尺寸在P102P104P105
标记信息在P102
封装信息在P101P102P103P104P105
技术参数、封装参数在P6
应用领域在P1P87
电气规格在P7P8P9P10
导航目录
TPS23861PW数据手册
Page:
of 108 Go
若手册格式错乱，请下载阅览PDF原文件
RESET
SHTDWN
A3
SCL
SDAI
AIN
AGND DGND
KSENSx
INT
SDAO
AOUT
DRAINn
GATEn
VDD VPWR
SENn
22
100 nF
100 V
47
255 m
Note: only port n shown
TPS23861
PORTn
48 V3.3 V
Copyright © 2016, Texas Instruments Incorporated
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BOTTOM GND PLANE
Continuous, Robust Backside GND Plane
FETs Uniformly Spread Over Surface
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
TPS23861
SLUSBX9G –MARCH 2014–REVISED OCTOBER 2016
TPS23861 IEEE 802.3at Quad Port Power-over-Ethernet PSE Controller
1
1 Features
1
• IEEE 802.3at Quad Port PSE Controller
– Auto Detect, Classification
– Auto Turn-On and Disconnect
– Efficient 255-mΩ Sense Resistor
• Pin-Out Enables Two-Layer PCB
• Kelvin Current Sensing
• 4-Point Detection
• Automatic Mode – As Shipped
– No External Terminal Setting Required
– No Initial I
2
C Communication Required
• Semi-Automatic Mode – Set by I
2
C Command
– Continuous Identification and Classification
– Meets IEEE 400-ms T
PON
Specification
– Fast-Port Shutdown Input
– Operates best when used in conjunction with
system reference code
http://www.ti.com/product/TPS23861/toolssoftw
are
• Optional I
2
C Control and Monitoring
• –40°C to 125°C Temperature Range
• TSSOP 28 Package 9.8 mm x 6.6 mm
2 Applications
• Ethernet Switches and Routers
• Surveillance NVR and DVRs
• Residential Gateways
• PoE Pass-Through Systems
• Wireless Backhaul
3 Description
The TPS23861 is an easy-to-use, flexible,
IEEE802.3at PSE solution. As shipped, it
automatically manages four 802.3at ports without the
need for any external control.
The TPS23861 automatically detects Powered
Devices (PDs) that have a valid signature, determines
power requirements according to classification and
applies power. Two-event classification is supported
for type-2 PDs. The TPS23861 supports DC
disconnection and the external FET architecture
allows designers to balance size, efficiency and
solution cost requirements.
The unique pin-out enables 2-layer PCB designs via
logical grouping and clear upper and lower
differentiation of I
2
C and power pins. This delivers
best-in-class thermal performance, Kelvin accuracy
and low-build cost.
In addition to automatic operation, the TPS23861
supports Semi-Auto Mode via I
2
C control for precision
monitoring and intelligent power management.
Compliance with the 400-ms T
PON
specification is
ensured whether in semi-automatic or automatic
mode.
Device Information
PART NUMBER PACKAGE BODY SIZE
TPS23861 TSSOP (28) 9.80 mm x 6.60 mm
Simplified Schematic
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