LM2678SX-5.0/NOPB TI Step-Down Regulator | TO-263 | 5V Output, 5A

Product Overview

The LM2678SX-5.0/NOPB is a high-efficiency step-down (buck) switching voltage regulator from Texas Instruments. It delivers a fixed 5V output with a load current capability of up to 5A. Housed in a TO-263 (DDPAK-7) package, this device integrates a 260 mΩ N-channel MOSFET and operates at a switching frequency of 260 kHz. The LM2678 series requires minimal external components and features a comprehensive set of protection functions including thermal shutdown, current limit, and under-voltage lockout. It is designed for ease of use, with a simple external circuit that can be implemented with standard inductors and capacitors.

Detailed Technical Specifications

Key Features

• Fixed 5V output with 5A continuous output current
• Wide input voltage range: 8V to 40V
• High efficiency up to 92% reduces heat dissipation
• Integrated 260 mΩ N-channel MOSFET
• 260 kHz fixed switching frequency allows small external components
• Comprehensive protection: thermal shutdown, current limit, under-voltage lockout
• Low shutdown current: 25 µA
• Simple external circuit with standard inductors and capacitors
• Available in TO-263 (DDPAK-7) package for excellent thermal performance

Target Applications

• 5G base station power supplies
• Automotive dashboard and infotainment systems
• Industrial control systems
• Telecommunications equipment
• Point-of-load regulation for FPGAs and DSPs
• Battery-powered devices
• Distributed power systems

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for LM2678SX-5.0/NOPB. 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

LM2678SX-5.0/NOPB 是德州儀器（TI）推出的一款高效率降壓型開關穩壓器。它提供固定的5V輸出，負載電流能力高達5A。該器件採用 TO-263（DDPAK-7）封裝，內置260 mΩ N溝道MOSFET，開關頻率為260 kHz。LM2678系列只需最少的外部元件，並具備全面的保護功能，包括熱關斷、電流限制和欠壓鎖定。其設計易於使用，只需標準電感和電容即可實現簡單的外部電路。

詳細技術參數

核心特性

• 固定5V輸出，連續輸出電流5A
• 寬輸入電壓範圍：8V 至 40V
• 高效率高達92%，減少散熱
• 內置260 mΩ N溝道MOSFET
• 260 kHz固定開關頻率，可使用小型外部元件
• 全面保護：熱關斷、電流限制、欠壓鎖定
• 低關斷電流：25 µA
• 簡單的外部電路，使用標準電感和電容
• 採用TO-263（DDPAK-7）封裝，散熱性能優異

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
• FPGA和DSP的負載點穩壓
• 電池供電設備
• 分布式電源系統

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 LM2678SX-5.0/NOPB 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]