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Product Overview
The LM2940IMPX-12/NOPB from Texas Instruments is a low dropout (LDO) voltage regulator designed to deliver a fixed 12V output with a maximum current of 1A. It features a dropout voltage of typically 0.5V at full load, making it suitable for applications where input-to-output voltage differential is minimal. The device is housed in a compact SOT-223-4 package, ideal for space-constrained designs. It includes internal protection circuits such as current limiting and thermal shutdown, ensuring reliable operation under fault conditions.
Detailed Technical Specifications
| Parameter |
Value |
| Output Voltage |
12V (fixed) |
| Output Current |
1A (max) |
| Dropout Voltage |
0.5V (typical at 1A) |
| Input Voltage Range |
13.5V to 26V |
| Line Regulation |
0.015% (typical) |
| Load Regulation |
0.1% (typical) |
| Quiescent Current |
15 mA (typical) |
| Operating Temperature |
-40°C to +125°C |
| Package |
SOT-223-4 |
Key Features
- Fixed 12V output with ±2% accuracy
- Low dropout voltage: 0.5V typical at 1A
- Output current up to 1A
- Internal current limiting and thermal shutdown
- Wide input voltage range: 13.5V to 26V
- Low quiescent current: 15 mA typical
- Reverse battery protection
- Available in SOT-223-4 package
Target Applications
- Automotive infotainment systems (e.g., dashboard displays, GPS modules)
- Industrial control systems (e.g., PLCs, motor drives)
- Telecommunications equipment (e.g., 5G base station power supplies)
- Consumer electronics (e.g., set-top boxes, routers)
- Battery-powered devices requiring stable 12V rail
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
LM2940IMPX-12/NOPB. 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
LM2940IMPX-12/NOPB 是德州儀器(TI)推出的一款低壓差(LDO)穩壓器,提供固定的12V輸出,最大輸出電流為1A。其典型壓差電壓在滿載時僅為0.5V,非常適合輸入輸出電壓差較小的應用。器件採用緊湊的SOT-223-4封裝,適用於空間受限的設計。內部集成限流和熱關斷保護電路,確保在故障條件下可靠運行。
詳細技術參數
| 參數 |
數值 |
| 輸出電壓 |
12V(固定) |
| 輸出電流 |
1A(最大) |
| 壓差電壓 |
0.5V(典型值,1A時) |
| 輸入電壓範圍 |
13.5V 至 26V |
| 線性調整率 |
0.015%(典型值) |
| 負載調整率 |
0.1%(典型值) |
| 靜態電流 |
15 mA(典型值) |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
SOT-223-4 |
核心特性
- 固定12V輸出,精度±2%
- 低壓差:1A時典型值0.5V
- 輸出電流高達1A
- 內部限流和熱關斷保護
- 寬輸入電壓範圍:13.5V 至 26V
- 低靜態電流:典型值15 mA
- 反極性保護
- 採用SOT-223-4封裝
典型應用場景
- 汽車信息娛樂系統(例如儀表盤顯示、GPS模塊)
- 工業控制系統(例如PLC、電機驅動)
- 電信設備(例如5G基站電源)
- 消費電子(例如機頂盒、路由器)
- 需要穩定12V供電的電池供電設備
環球供應鏈與批發合作夥伴方案
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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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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。
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