PM8803 ST Power Management IC | 20-TSSOP Exposed Pad | IEEE 802.3at, PoE+

Product Overview

The PM8803 from STMicroelectronics is a high-performance Power over Ethernet (PoE) interface and PWM controller designed for Powered Devices (PDs) in IEEE 802.3at (PoE+) applications. It integrates a hot-swap MOSFET, a PWM controller for isolated DC-DC converters, and advanced protection features in a compact 20-TSSOP package with an exposed pad for enhanced thermal dissipation. The device supports up to 25.5W of power delivery, making it ideal for high-power PoE applications such as wireless access points, IP cameras, and IoT gateways.

Detailed Technical Specifications

Key Features

• IEEE 802.3at compliant PD interface with detection and classification
• Integrated hot-swap MOSFET with programmable current limit
• PWM controller for isolated flyback or forward converters
• Programmable switching frequency up to 500kHz
• Low quiescent current for energy-efficient operation
• Thermal shutdown and overcurrent protection
• Small footprint 20-TSSOP package with exposed pad for thermal management

Target Applications

• 5G small cell base stations
• Enterprise wireless access points (e.g., Cisco Aironet series)
• IP surveillance cameras (e.g., Axis Q series)
• Industrial IoT gateways
• PoE lighting systems
• Smart building controllers

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for PM8803. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• BOM Kitting & Sampling Services: Specialized sourcing for testing samples and urgent shortage components.

Quality Assurance & Compliance

Jasin Chip guarantees that all delivered products are 100% original factory stock with full quality assurance and traceability.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

PM8803 是意法半導體推出的高性能以太網供電（PoE）接口和 PWM 控制器，專為符合 IEEE 802.3at（PoE+）標準的受電設備（PD）設計。它集成了熱插拔 MOSFET、用於隔離式 DC-DC 轉換器的 PWM 控制器以及先進的保護功能，採用緊湊的 20-TSSOP 封裝，帶有裸露焊盤以增強散熱性能。該器件支持高達 25.5W 的功率傳輸，非常適合無線接入點、IP 攝像機和物聯網網關等高功率 PoE 應用。

詳細技術參數

核心特性

• 符合 IEEE 802.3at 標準的 PD 接口，支持檢測和分類
• 集成熱插拔 MOSFET，可編程電流限制
• 用於隔離式反激或正激轉換器的 PWM 控制器
• 可編程開關頻率，最高 500kHz
• 低靜態電流，實現節能運行
• 熱關斷和過流保護
• 小型 20-TSSOP 封裝，帶裸露焊盤，便於熱管理

典型應用場景

• 5G 小型蜂窩基站
• 企業級無線接入點（例如 Cisco Aironet 系列）
• IP 監控攝像機（例如 Axis Q 系列）
• 工業物聯網網關
• PoE 照明系統
• 智能樓宇控制器

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 PM8803 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 全天候環球客戶支援：專業團隊為您提供即時報價及技術支援，無需漫長等待。
• 現貨庫存，即日發貨：確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。
• 深港聯動，結算靈活：深圳直發全球，物流高效可靠；支援香港銀行戶口轉賬及多幣種結算。
• Escrow 擔保交易：支援 Escrow.com 平台交易，保障買賣雙方權益，小批量訂單亦可安心在線下單。
• BOM 配單與樣板服務：提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。

品質保證與合規

Jasin Chip 承諾所有出貨產品均為原廠正貨，具備完善的品質保證及產品可追溯性。

• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
• 符合 RoHS 認證：所有電子元器件均符合國際環保標準及相關安全認證。
• 原廠封裝保護：嚴格保留原廠原始包裝及封條，確保物流過程中的靜電防護 (ESD) 與物理安全。

以上產品均為原廠正貨，提供 BOM 配單及現貨庫存支援，歡迎查詢。

HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]