LM2991S TI Negative Linear Regulator | TO-263 (DDPAK-5) | -3V to -24V, 1A

Product Overview

The LM2991S from Texas Instruments is a low-dropout (LDO) negative voltage regulator designed for applications requiring a stable negative output voltage. It features an adjustable output voltage range from -3V to -24V and can deliver up to 1A of output current. The device is housed in a TO-263 (DDPAK-5) package, offering excellent thermal performance for high-power applications. With a dropout voltage of typically 0.6V at 1A, it is ideal for systems where input-to-output voltage differential is minimal.

Detailed Technical Specifications

Key Features

• Adjustable negative output voltage from -3V to -24V
• Output current up to 1A
• Low dropout voltage: 0.6V typical at 1A
• Excellent line and load regulation
• Internal current limit and thermal shutdown protection
• Low quiescent current: 1 mA typical
• Wide operating temperature range: -40°C to +125°C

Target Applications

• 5G base station power supplies (e.g., negative rail for RF amplifiers)
• Automotive dashboard displays (e.g., negative bias for LCD panels)
• Industrial control systems (e.g., negative voltage for op-amp supplies)
• Telecommunications equipment (e.g., negative rail for line drivers)
• Medical devices (e.g., negative voltage for sensor biasing)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for LM2991S. 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

LM2991S 是德州儀器 (TI) 推出的一款低壓差 (LDO) 負電壓穩壓器，專為需要穩定負電壓輸出的應用而設計。其可調輸出電壓範圍為 -3V 至 -24V，最大輸出電流可達 1A。該器件採用 TO-263 (DDPAK-5) 封裝，具有優異的熱性能，適用於高功率應用。在 1A 負載下，典型壓差電壓僅為 0.6V，非常適合輸入與輸出電壓差較小的系統。

詳細技術參數

核心特性

• 可調負電壓輸出：-3V 至 -24V
• 輸出電流高達 1A
• 低壓差電壓：1A 時典型值 0.6V
• 優異的線性和負載調整率
• 內置電流限制和熱關斷保護
• 低靜態電流：典型值 1 mA
• 寬工作溫度範圍：-40°C 至 +125°C

典型應用場景

• 5G 基站電源（例如射頻放大器的負電源軌）
• 汽車儀表板顯示器（例如 LCD 面板的負偏壓）
• 工業控制系統（例如運算放大器電源的負電壓）
• 電信設備（例如線路驅動器的負電源軌）
• 醫療設備（例如傳感器偏置的負電壓）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 LM2991S 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]