L5991AD ST PWM Controller | 16-SOIC | 1MHz, Current Mode

Product Overview

The L5991AD is a high-performance current-mode PWM controller from STMicroelectronics, designed for offline and DC-DC converters. It operates at a fixed frequency up to 1 MHz and features a 16-SOIC package (0.154", 3.90mm width). The device integrates a 1A gate driver, soft-start, and protection functions, making it ideal for medium-power applications.

Detailed Technical Specifications

Key Features

• Current-mode control with fast transient response
• Programmable soft-start
• 1A peak gate driver for external MOSFET
• Internal oscillator up to 1 MHz
• Under-voltage lockout (UVLO) with hysteresis
• Overcurrent and overvoltage protection
• Thermal shutdown

Target Applications

• AC-DC adapters for consumer electronics
• DC-DC converters for 5G base station power supplies
• Industrial power supplies for automation equipment
• LED lighting drivers
• Automotive infotainment and dashboard power systems

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for L5991AD. 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

L5991AD 是意法半導體推出的一款高性能電流模式 PWM 控制器，適用於離線式和 DC-DC 轉換器。它支持高達 1 MHz 的固定頻率工作，採用 16-SOIC 封裝（0.154"，3.90mm 寬）。該器件集成了 1A 柵極驅動器、軟啟動和保護功能，非常適合中等功率應用。

詳細技術參數

核心特性

• 電流模式控制，快速瞬態響應
• 可編程軟啟動
• 1A 峰值柵極驅動器，用於外部 MOSFET
• 內部振盪器高達 1 MHz
• 欠壓鎖定（UVLO）帶滯回
• 過流和過壓保護
• 熱關斷

典型應用場景

• 消費電子產品的 AC-DC 適配器
• 5G 基站電源的 DC-DC 轉換器
• 自動化設備的工業電源
• LED 照明驅動器
• 汽車信息娛樂系統和儀表板電源

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 L5991AD 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]