LM3940IMP-3.3 TI LDO Regulator | SOT-223-4 | 1A, 3.3V Output

Product Overview

The LM3940IMP-3.3 is a low dropout (LDO) voltage regulator from Texas Instruments, designed to deliver a fixed 3.3V output with a maximum current of 1A. Housed in a compact SOT-223-4 package, it features a dropout voltage of typically 0.5V at full load, making it ideal for applications where input-to-output voltage differential is minimal. The device incorporates internal current limiting and thermal shutdown protection, ensuring reliable operation under fault conditions.

Detailed Technical Specifications

Key Features

• Fixed 3.3V output with 1A capability
• Low dropout voltage: 0.5V typical at 1A
• Internal current limiting and thermal shutdown
• Stable with low ESR output capacitors (10 µF tantalum)
• Reverse battery protection
• Fast transient response

Target Applications

• 5G base station power management (e.g., supplying 3.3V to FPGA or DSP cores)
• Automotive dashboard infotainment systems (e.g., powering MCU and display modules)
• Industrial control systems (e.g., PLC I/O modules)
• Portable battery-powered devices (e.g., handheld test equipment)
• Networking equipment (e.g., routers and switches)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for LM3940IMP-3.3. 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

LM3940IMP-3.3 是德州儀器（TI）推出的一款低壓差線性穩壓器（LDO），提供固定的 3.3V 輸出，最大輸出電流為 1A。採用緊湊的 SOT-223-4 封裝，在滿載時典型壓差僅為 0.5V，非常適合輸入與輸出電壓差較小的應用。器件內置電流限制和熱關斷保護，確保在故障條件下可靠運行。

詳細技術參數

核心特性

• 固定 3.3V 輸出，支持 1A 電流
• 低壓差：1A 時典型 0.5V
• 內置電流限制和熱關斷保護
• 可使用低 ESR 輸出電容（10 µF 鉭電容）穩定工作
• 反接電池保護
• 快速瞬態響應

典型應用場景

• 5G 基站電源管理（例如為 FPGA 或 DSP 內核提供 3.3V）
• 汽車儀表板信息娛樂系統（例如為 MCU 和顯示模塊供電）
• 工業控制系統（例如 PLC I/O 模塊）
• 便攜式電池供電設備（例如手持測試儀器）
• 網絡設備（例如路由器和交換機）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 LM3940IMP-3.3 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]