LM2678SD-3.3/NOPB TI DC-DC Converter | 14-VSON(5x6) | 3.3V Output, 5A

Product Overview

The LM2678SD-3.3/NOPB is a high-efficiency, 5A step-down (buck) DC-DC converter from Texas Instruments. It features a fixed 3.3V output voltage and operates over a wide input voltage range of 8V to 40V. Housed in a compact 14-pin VSON (5x6mm) package, this device integrates a 260mΩ N-channel MOSFET and uses a simple external inductor and capacitor for operation. With a switching frequency of 260kHz, it offers excellent line and load regulation, making it ideal for power-sensitive applications.

Detailed Technical Specifications

Key Features

• High efficiency: up to 92% reduces heat dissipation
• Wide input voltage range: 8V to 40V for versatile applications
• Integrated 260mΩ N-channel MOSFET minimizes external components
• Fixed 3.3V output with ±2% accuracy over line and load
• 260kHz switching frequency allows small filter components
• Comprehensive protection: thermal shutdown, current limit, UVLO
• Low standby current: 5µA typical in shutdown

Target Applications

• 5G base station power supplies (e.g., remote radio unit power rails)
• Automotive infotainment and dashboard systems (e.g., 12V to 3.3V conversion)
• Industrial control systems (e.g., PLC power modules)
• Telecom and networking equipment (e.g., routers, switches)
• Battery-powered devices requiring efficient step-down conversion

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for LM2678SD-3.3/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

LM2678SD-3.3/NOPB 是德州儀器（TI）推出的一款高效率、5A 降壓型 DC-DC 轉換器。它提供固定的 3.3V 輸出電壓，並可在 8V 至 40V 的寬輸入電壓範圍內工作。該器件採用緊湊的 14 引腳 VSON（5x6mm）封裝，內部集成 260mΩ N 溝道 MOSFET，僅需簡單的外部電感和電容即可工作。開關頻率為 260kHz，具有優異的線性和負載調整率，非常適合對功耗敏感的應用。

詳細技術參數

核心特性

• 高效率：高達 92%，減少熱量散發
• 寬輸入電壓範圍：8V 至 40V，適用多種應用
• 集成 260mΩ N 溝道 MOSFET，減少外部元件
• 固定 3.3V 輸出，線性和負載調整率 ±2%
• 260kHz 開關頻率，允許使用小型濾波元件
• 全面保護：熱關斷、電流限制、欠壓鎖定
• 低待機電流：關斷時典型值 5µA

典型應用場景

• 5G 基站電源（例如遠端射頻單元電源軌）
• 汽車資訊娛樂和儀表板系統（例如 12V 轉 3.3V）
• 工業控制系統（例如 PLC 電源模組）
• 電信和網路設備（例如路由器、交換機）
• 需要高效降壓轉換的電池供電設備

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 LM2678SD-3.3/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]