L4985B ST Power Factor Correction Controller | 8-SO | 10V-22.6V Supply, 50kHz-250kHz

Product Overview

The L4985B is a high-performance Power Factor Correction (PFC) controller from STMicroelectronics, designed for AC-DC converters requiring high power factor and low harmonic distortion. It operates in transition mode (TM) with a proprietary multiplier and THD optimizer, ensuring compliance with EN61000-3-2 and IEC61000-3-2 standards. The device is housed in a compact 8-SO package, making it suitable for space-constrained applications such as LED lighting, adapters, and industrial power supplies.

Detailed Technical Specifications

Key Features

• Transition mode PFC controller with high accuracy
• Proprietary multiplier for near-unity power factor
• THD optimizer for low harmonic distortion
• Low start-up current (30 µA typical)
• Programmable output voltage via feedback
• Comprehensive protections: overvoltage, overcurrent, brown-out, and thermal shutdown
• Compatible with EN61000-3-2 and IEC61000-3-2

Target Applications

• AC-DC adapters for laptops and gaming consoles
• LED lighting drivers (e.g., street lighting, indoor downlights)
• Industrial power supplies for 5G base stations
• Home appliances like air conditioners and washing machines
• Battery chargers for electric vehicles

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for L4985B. 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

L4985B是意法半導體（STMicroelectronics）推出的一款高性能功率因數校正（PFC）控制器，專為需要高功率因數和低諧波失真的AC-DC轉換器設計。它採用過渡模式（TM）工作，內置專有乘法器和THD優化器，確保符合EN61000-3-2和IEC61000-3-2標準。器件採用緊湊的8-SO封裝，適用於LED照明、適配器和工業電源等空間受限的應用。

詳細技術參數

核心特性

• 過渡模式PFC控制器，精度高
• 專有乘法器實現接近單位功率因數
• THD優化器降低諧波失真
• 低啟動電流（典型值30 µA）
• 通過反饋可編程輸出電壓
• 全面保護：過壓、過流、掉電和熱關斷
• 符合EN61000-3-2和IEC61000-3-2標準

典型應用場景

• 筆記本電腦和遊戲機的AC-DC適配器
• LED照明驅動器（如路燈、室內筒燈）
• 5G基站的工業電源
• 空調、洗衣機等家用電器
• 電動汽車電池充電器

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 L4985B 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]