E-STE12PS

更新时间： 2024-11-02 10:05:11

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		模拟IC 信号电路
页数	文件大小	规格书
44页	794K
描述
12 channel integrated PSE line manager

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中文翻译

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技术参数
数据手册

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E-STE12PS 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	BGA	包装说明：	23 X 23 MM, 1.82 MM HEIGHT, LEAD FREE, PLASTIC, BGA-324
针数：	324	Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01	风险等级：	5.84
模拟集成电路 - 其他类型：	ANALOG CIRCUIT	JESD-30 代码：	S-PBGA-B324
长度：	23 mm	功能数量：	1
端子数量：	324	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	BGA	封装等效代码：	BGA324,22X22,40
封装形状：	SQUARE	封装形式：	GRID ARRAY
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	3.3,10 V
认证状态：	Not Qualified	座面最大高度：	1.82 mm
子类别：	Power Management Circuits	最大供电电压 (Vsup)：	3.6 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：	INDUSTRIAL
端子形式：	BALL	端子节距：	1 mm
端子位置：	BOTTOM	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	23 mm	Base Number Matches：	1

E-STE12PS 数据手册

STE12PS

12 channel integrated PSE line manager

Preliminary Data

Features

■ PSE power control device

■ Supports up to 12 independent, 4^(a)or 6^(b)30W

“boosted” ports

■ Wide operating range: up to 90V

■ IEEE 802.3af compliant

■ Open circuit detection: AC and DC methods

■ Advanced power management algorithm

PBGA23x23

■ Current sensing with as low as 500mΩ,

external, series resistors

■ No need for external FETs

■ In-rush current control

The STE12PS is fully programmable, supporting

the detection and powering of IEEE802.3af as

well as legacy PDs. The flexibility of the STE12PS

allows the user to select a suitable system

configuration: up to 12 ports as well as 4^(a)or 6^(b)

“boosted” channels. If needed, the STE12PS can

also efficiently manage cases or applications

where a limited amount of power is available to

the ports (smart-power capability) by means of

integrated, power MOSFET devices. All

■ Short-circuit protection

■ Adaptable signature detection capability

■ On-chip 3.3V SMPS controller

■ Low-noise, 12-bit ADC

■ Standard I²C interface

■ Parallel monitor interface

operations are controlled via the I²C bus also

notifying externally some ports status condition

via dedicated pins.

Description

STE12PS is designed to supply power over

multiple Ethernet channels in order to avoid

different, individual power supply units for

applications such as Web cams, IP Phones,

Bluetooth access points and WLAN access

points.

Ethernet port isolation can be easily maintained

thanks to an integrated 3.3V SMPS power source

and by means of optocouplers.

The STE12PS has five address selection inputs

to choose up to 32 possible different addresses.

The equipment that provides the power to the

twisted pair cabling is referred to as Power

Sourcing Equipment (PSE).

Power can be provided to the PD using either

spare lines of the Ethernet cable or using the data

wires, as specified by IEEE 802.3af.

The PSE’s main functions are: looking for links to

a Powered Device (PD), classifying a PD,

supplying power to the link, monitoring power on

the link, and removing power from the link.

a. In AUTO mode

b. In MANUAL mode

August 2007

Rev 3

1/44

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

www.st.com

12 3 4 5 6 7...44

中文翻译

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