LP3981ILD-3.3/NOPB TI LDO Regulator | 6-WSON(3x4) | 3.3V Output, 300mA

Product Overview

The LP3981ILD-3.3/NOPB is a high-performance, low-dropout (LDO) voltage regulator from Texas Instruments, offering a fixed output voltage of 3.3V with a maximum output current of 300mA. Housed in a compact 6-WSON (3x4) package, this device is designed for space-constrained applications requiring low noise, high PSRR, and fast transient response. The LP3981 features a low dropout voltage of typically 120mV at full load, making it ideal for battery-powered systems. Its enable pin allows for power sequencing and shutdown to reduce quiescent current to near zero.

Detailed Technical Specifications

Key Features

• Low dropout voltage: 120mV typical at 300mA
• High PSRR: 60dB at 1kHz
• Low output noise: 30µVrms
• Low quiescent current: 110µA typical
• Enable pin for power management
• Thermal shutdown and current limit protection
• Stable with ceramic capacitors (1µF typical)
• Small 6-WSON package for space-constrained designs

Target Applications

• 5G base station power management: RF transceivers, PLLs, and clock generators requiring low noise supply
• Automotive dashboard displays: Powering infotainment processors and display drivers
• Portable medical devices: Glucose monitors, pulse oximeters needing low power and small size
• Industrial sensors: Pressure, temperature transmitters with battery operation
• IoT modules: Wi-Fi/Bluetooth modules requiring clean 3.3V rail

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for LP3981ILD-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

LP3981ILD-3.3/NOPB 是德州儀器（TI）推出的一款高性能低壓差線性穩壓器（LDO），提供固定的3.3V輸出電壓和最大300mA的輸出電流。採用緊湊的6-WSON（3x4）封裝，適用於需要低噪聲、高電源抑制比（PSRR）和快速瞬態響應的空間受限應用。LP3981在滿載時典型壓差僅為120mV，非常適合電池供電系統。其使能引腳支持電源排序和關斷功能，可將靜態電流降至接近零。

詳細技術參數

核心特性

• 低壓差：300mA時典型值120mV
• 高PSRR：1kHz時60dB
• 低輸出噪聲：30µVrms
• 低靜態電流：典型110µA
• 使能引腳，便於電源管理
• 熱關斷和電流限制保護
• 與陶瓷電容穩定工作（典型1µF）
• 小型6-WSON封裝，節省空間

典型應用場景

• 5G基站電源管理：為射頻收發器、鎖相環和時鐘發生器提供低噪聲供電
• 汽車儀表盤顯示：為信息娛樂處理器和顯示驅動器供電
• 便攜醫療設備：血糖儀、脈搏血氧儀等需要低功耗和小體積的設備
• 工業傳感器：壓力、溫度變送器等電池供電應用
• 物聯網模塊：Wi-Fi/藍牙模塊需要乾淨的3.3V電源軌

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 LP3981ILD-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]