LP2981-33DBVR TI LDO Regulator | SOT-23-5 | 3.3V Output, 100mA

Product Overview

The LP2981-33DBVR from Texas Instruments is a high-performance, low-dropout (LDO) voltage regulator designed to deliver a fixed 3.3V output with a maximum output current of 100mA. Housed in a compact SOT-23-5 package, this device is ideal for space-constrained applications requiring low noise and high power supply rejection ratio (PSRR). With a dropout voltage of only 200mV at full load, it ensures efficient operation even when the input voltage is close to the output. The LP2981-33DBVR features a shutdown mode that reduces quiescent current to less than 1µA, making it suitable for battery-powered devices. Its stable operation with low-ESR ceramic output capacitors simplifies design and reduces external component count.

Detailed Technical Specifications

Key Features

• Low dropout voltage: 200mV at 100mA load
• Low quiescent current: 120µA typical
• Shutdown mode with <1µA quiescent current
• High PSRR: 65dB at 1kHz
• Low output noise: 30µVrms
• Stable with low-ESR ceramic capacitors
• Overcurrent and overtemperature protection
• Fixed 3.3V output with ±2% accuracy

Target Applications

• 5G base station power management
• Automotive dashboard displays
• Portable battery-powered devices
• Wireless sensors and IoT modules
• Industrial control systems
• Medical monitoring equipment

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for LP2981-33DBVR. 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

LP2981-33DBVR 是德州儀器（TI）推出的一款高性能低壓差（LDO）穩壓器，提供固定的 3.3V 輸出電壓，最大輸出電流為 100mA。採用緊湊的 SOT-23-5 封裝，非常適合需要低噪聲和高電源抑制比（PSRR）的空間受限應用。在滿載條件下，其壓差電壓僅為 200mV，確保即使在輸入電壓接近輸出電壓時也能高效運行。LP2981-33DBVR 具有關斷模式，可將靜態電流降至 1µA 以下，適用於電池供電設備。它與低 ESR 陶瓷輸出電容器穩定工作，簡化了設計並減少了外部元件數量。

詳細技術參數

核心特性

• 低壓差：100mA 負載時僅 200mV
• 低靜態電流：典型值 120µA
• 關斷模式：靜態電流 <1µA
• 高 PSRR：1kHz 時 65dB
• 低輸出噪聲：30µVrms
• 與低 ESR 陶瓷電容器穩定工作
• 過流和過溫保護
• 固定 3.3V 輸出，精度 ±2%

典型應用場景

• 5G 基站電源管理
• 汽車儀表盤顯示
• 便攜式電池供電設備
• 無線傳感器和 IoT 模塊
• 工業控制系統
• 醫療監測設備

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 LP2981-33DBVR 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]