L4973V5.1 ST Switching Regulator | 18-DIP | 3.5A Output, 5.1V Fixed

Product Overview

The L4973V5.1 is a step-down switching regulator from STMicroelectronics, designed for high-efficiency power conversion. It features a fixed output voltage of 5.1V and a maximum output current of 3.5A. Housed in an 18-pin DIP package, this device integrates a power switch and offers excellent line and load regulation. The L4973V5.1 operates at a switching frequency of up to 200 kHz, enabling compact power supply designs with minimal external components.

Detailed Technical Specifications

Key Features

• Fixed 5.1V output voltage with ±2% accuracy
• 3.5A continuous output current capability
• Wide input voltage range: 8V to 55V
• High efficiency up to 90%
• Internal power switch and compensation
• Thermal shutdown and overcurrent protection
• Low standby current
• 18-pin DIP package for easy prototyping

Target Applications

• 5G base station power supplies
• Automotive dashboard and infotainment systems
• Industrial control systems
• Telecommunication equipment
• Battery-powered devices
• Distributed power architectures

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for L4973V5.1. 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

L4973V5.1 是意法半導體推出的降壓開關穩壓器，專為高效能電源轉換設計。它具有固定的 5.1V 輸出電壓和最大 3.5A 的輸出電流。採用 18 引腳 DIP 封裝，該器件集成功率開關，並提供優異的線性和負載調節。L4973V5.1 的工作開關頻率高達 200 kHz，能夠以最少的外部元件實現緊湊的電源設計。

詳細技術參數

核心特性

• 固定 5.1V 輸出電壓，精度 ±2%
• 3.5A 連續輸出電流能力
• 寬輸入電壓範圍：8V 至 55V
• 高效率，最高可達 90%
• 內置功率開關和補償
• 熱關斷和過流保護
• 低待機電流
• 18 引腳 DIP 封裝，便於原型設計

典型應用場景

• 5G 基站電源
• 汽車儀表盤和信息娛樂系統
• 工業控制系統
• 電信設備
• 電池供電設備
• 分布式電源架構

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 L4973V5.1 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]