LTC9101-2

推荐新设计使用

12/24 端口 IEEE 802.3bt PoE PSE 控制器

数据手册 (Rev. A) 产品选型表

产品模型: 2

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产品详情

完全符合 IEEE 802.3bt 3 类和 4 类标准的 PSE
多达 24 个 PSE 端口，每个端口有两个电源通道
可耐受 +80V/–20V 面向引脚的端口
受 ECC 保护的 eFlash 和数据 RAM
每个通道均具有低功耗路径损耗
- 100mΩ 检测电阻
- 30mΩ 或低 MOSFET R_DS(ON)
芯片组提供电气隔离
- 不再需要光电元件和隔离式 3.3V 电源

可靠性极高的多点 PD 检测
- 连接检查可以区分单签名和双签名 PD
持续的每端口电压和电流监控
与 1MHz I²C 兼容的串行控制接口
引脚或 I²C 可编程 PD 电源
采用 24 引脚 4mm × 4mm (LTC9101‑2) 和 64 引脚 7mm × 11mm (LTC9102) QFN 封装

参考资料

数据手册 1

LTC9101-2/LTC9102: 12/24-Port IEEE 802.3bt PoE PSE Controller Data Sheet (Rev.A) 03/24/2023

用户手册 1

UG-2131: Evaluating the LTC9101-2/LTC9101-2A/LTC9101-2B and LTC9102 48-Channel IEEE 802.3at/bt PSE (Rev.A) 01/21/2025

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产品型号	引脚/封装图-中文版	文档	CAD 符号，脚注和 3D模型
LTC9101AUF-2#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC9101AUF-2#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

产品型号	产品生命周期	PCN

9月 19, 2024 - 24_0142 LTC9101- Wire Diameter and Bond Composition Change
		PCN24_0142_Form Material_Report Qualification Results Summary
LTC9101AUF-2#PBF	量产
LTC9101AUF-2#TRPBF	量产

这是最新版本的数据手册

软件资源

Evaluation Software 1

Software Interface Datasheet

The software interface datasheet for this PSE may be requested from the Software Request Form (SRF). This datasheet describes the I²C interface and programming details for the respective PSE controller.

Software Interface Datasheet

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评估套件

Evaluating the LTC9101-2/LTC9101-2A/LTC9101-2B and LTC9102 48-Channel IEEE 802.3at/bt PSE

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产品详情

The EVAL-LTC9101-2 is a 48-channel IEEE 802.3at/bt compliant power sourcing equipment (PSE). The EVAL-LTC9101-2 includes the DC3159A-C, DC3159A-D, or DC3159A-E daughter card, the DC3017A-B motherboard, and features the LTC9101-2/ LTC9101-2A/LTC9101-2B and LTC9102 chipset.

In the EVAL-LTC9101-2, the daughter card has a single LTC9101-2x digital controller, where X denotes either the LTC9101-2, LTC9101-2A, or the LTC9101-2B. The DC3159A-C has the LTC9101-2, the DC3159A-D daughter card has the LTC9101-2A and the DC3159A-E has the LTC9101-2B. The digital controller interfaces with four LTC9102 (12-channel) analog controllers for a total of 48 PSE channels.

The LTC9101-2x use a proprietary isolated data interface allowing the LTC9101-2x digital controller to directly connect to the host controller I²C interface and eliminating the need for costly optocouplers and an additional 3.3 V supply.

The EVAL-LTC9101-2 kit connects to up to twenty-four, 802.3af/at/bt PDs directly at each port for 4-pair power evaluation. This kit version can operate autonomously or with host control over I²C.

The EVAL-LTC9101-2A kit connects to up to forty-eight, 802.3af/at PDs with an ethernet splitter for each two ports for 2-pair power evaluation. This kit version requires host control over I²C.

The EVAL-LTC9101-2B kit connects to up to forty-eight, 802.3af/at/bt PDs with an ethernet splitter for each two ports for 2-pair power evaluation. This kit version can operate autonomously or with host control over I²C.

Indicator LEDs quickly show channel status for the 48 power channels. An optional on-board buck regulator provides 3.3 V from the V_EE supply for the digital circuity. This demonstration manual provides an EVAL-LTC9101-2 overview and quick start procedure.

Design files for this circuit board are available.