LTC9101-2A

推荐新设计使用

12/24/48 端口 IEEE 802.3 PoE PSE 数字控制器

数据手册 (Rev. 0)

产品模型: 2

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产品详情

完全符合 IEEE 802.3at 类型 1 和 2 PSE 标准
多达 48 个 PSE 端口
工业标准寄存器映射
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
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 (LTC9101‑2A) 封装和 64 引脚 7mm × 11mm (LTC9102) QFN 封装

参考资料

数据手册 1

LTC9101-2A/LTC9102: 12-/24-/48-Port IEEE 802.3 at PoE PSE Controller Data Sheet (Rev.0) 07/26/2023

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.B) 01/21/2025

ADI 始终高度重视提供符合最高质量和可靠性水平的产品。我们通过将质量和可靠性检查纳入产品和工艺设计的各个范围以及制造过程来实现这一目标。出货产品的“零缺陷”始终是我们的目标。查看我们的质量和可靠性计划和认证以了解更多信息。

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

这是最新版本的数据手册

软件资源

Evaluation Software 1

Software Interface Data Sheet and Software

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

Reference software for IEEE 802.3bt Semi-auto mode operation is available for this PSE controller and may be requested from the Software Request Form.

Software Request Form 新

硬件生态系统

部分模型	产品周期	描述
开关稳压器 4
LTC3639	推荐新设计使用	高效率、150V、100mA 同步降压型稳压器
LT8304	推荐新设计使用	具 150V/2A 开关的 100V_IN 微功率 No-Opto 隔离型反激式转换器
LT8310	量产	100V_IN 正激式转换器控制器
LT3748	量产	100V 隔离型反激式控制器

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.