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Product Overview
The LP38691SD-1.8 is a low-dropout (LDO) linear voltage regulator from Texas Instruments, offering a fixed output voltage of 1.8V with a maximum output current of 500mA. Housed in a compact 6-pin WSON package (3mm x 3mm), this device is designed for space-constrained applications requiring high accuracy and low noise. With a dropout voltage of only 120mV at full load, it ensures efficient operation even with minimal input-to-output voltage differential. The LP38691SD-1.8 features a low quiescent current of 30µA (typical) and a shutdown current of less than 1µA, making it ideal for battery-powered systems.
Detailed Technical Specifications
| Parameter |
Value |
| Output Voltage |
1.8V (Fixed) |
| Output Current |
500mA (Max) |
| Dropout Voltage |
120mV @ 500mA |
| Input Voltage Range |
2.7V to 5.5V |
| Quiescent Current |
30µA (Typ) |
| Shutdown Current |
<1µA |
| Output Voltage Accuracy |
±2% |
| PSRR |
60dB @ 1kHz |
| Operating Temperature |
-40°C to +125°C |
| Package |
6-WSON (3mm x 3mm) |
Key Features
- Fixed 1.8V output with ±2% accuracy
- Low dropout voltage: 120mV at 500mA
- Low quiescent current: 30µA typical
- Shutdown current <1µA
- Stable with ceramic output capacitors (1µF minimum)
- Overcurrent and thermal protection
- Small 6-pin WSON package (3mm x 3mm)
Target Applications
The LP38691SD-1.8 is suitable for a wide range of applications, including:
- 5G base stations: Powering RF transceivers and control logic requiring clean 1.8V rails.
- Automotive dashboards: Providing regulated supply for infotainment systems and sensor interfaces.
- Portable medical devices: Ensuring stable voltage for sensitive analog circuits.
- Industrial IoT sensors: Low-power operation extends battery life.
- Networking equipment: Powering FPGA and ASIC core voltages.
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
LP38691SD-1.8. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
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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.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
LP38691SD-1.8 是德州儀器(TI)推出的低壓差線性穩壓器(LDO),提供固定的 1.8V 輸出電壓,最大輸出電流為 500mA。採用緊湊的 6 引腳 WSON 封裝(3mm x 3mm),適用於對空間要求嚴格的應用,同時保持高精度和低噪聲。在滿載條件下,壓差電壓僅為 120mV,確保即使在輸入輸出電壓差很小的情況下也能高效運行。LP38691SD-1.8 的靜態電流典型值為 30µA,關斷電流小於 1µA,非常適合電池供電系統。
詳細技術參數
| 參數 |
數值 |
| 輸出電壓 |
1.8V(固定) |
| 輸出電流 |
500mA(最大) |
| 壓差電壓 |
120mV @ 500mA |
| 輸入電壓範圍 |
2.7V 至 5.5V |
| 靜態電流 |
30µA(典型值) |
| 關斷電流 |
<1µA |
| 輸出電壓精度 |
±2% |
| 電源抑制比 |
60dB @ 1kHz |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
6-WSON(3mm x 3mm) |
核心特性
- 固定 1.8V 輸出,精度 ±2%
- 低壓差:120mV @ 500mA
- 低靜態電流:典型值 30µA
- 關斷電流 <1µA
- 可使用陶瓷輸出電容器(最小 1µF)穩定工作
- 過流和過熱保護
- 小型 6 引腳 WSON 封裝(3mm x 3mm)
典型應用場景
LP38691SD-1.8 適用於多種應用,包括:
- 5G 基站:為射頻收發器和控制邏輯提供乾淨的 1.8V 電源。
- 汽車儀表板:為信息娛樂系統和傳感器接口提供穩壓電源。
- 便攜式醫療設備:為敏感模擬電路提供穩定電壓。
- 工業物聯網傳感器:低功耗運行延長電池壽命。
- 網絡設備:為 FPGA 和 ASIC 核心電壓供電。
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 LP38691SD-1.8 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
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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。
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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。
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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。
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