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Product Overview
The LM2940CSX-12/NOPB is a fixed-output low-dropout (LDO) voltage regulator from Texas Instruments, offering a stable 12V output with a maximum current of 1A. Housed in the TO-263 (DDPAK-3) package, this device is designed for applications requiring low dropout voltage and high accuracy. With a dropout voltage of typically 0.5V at full load, it ensures efficient operation even when the input voltage is close to the output. The LM2940 series features reverse battery protection, current limiting, and thermal shutdown, making it robust for automotive and industrial environments.
Detailed Technical Specifications
| Parameter |
Value |
| Output Voltage |
12V (Fixed) |
| Output Current |
1A (Max) |
| Dropout Voltage |
0.5V (Typical at 1A) |
| Input Voltage Range |
14V to 26V |
| Line Regulation |
0.015% (Typical) |
| Load Regulation |
0.1% (Typical) |
| Quiescent Current |
10 mA (Typical) |
| Operating Temperature |
-40°C to +125°C |
| Package |
TO-263 (DDPAK-3) |
Key Features
- Fixed 12V output with ±1% accuracy
- Low dropout voltage: 0.5V typical at 1A
- Output current up to 1A
- Reverse battery protection
- Internal current limiting and thermal shutdown
- Wide operating temperature range: -40°C to +125°C
- Surface-mount TO-263 package for compact designs
Target Applications
- Automotive electronics: infotainment systems, dashboard displays, and ADAS modules
- Industrial control systems: PLCs, motor drives, and sensor interfaces
- Telecommunications: 5G base station power management, network routers
- Consumer electronics: high-end audio equipment, set-top boxes
- Medical devices: portable diagnostic equipment, patient monitoring systems
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
LM2940CSX-12/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.
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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.
-
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.
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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
LM2940CSX-12/NOPB 是德州儀器(TI)推出的固定輸出低壓差穩壓器(LDO),提供穩定的12V輸出,最大電流1A。採用TO-263(DDPAK-3)封裝,適用於需要低壓差和高精度的應用。在滿載時典型壓差僅0.5V,確保輸入電壓接近輸出時仍能高效工作。LM2940系列具備反接保護、限流和熱關斷功能,適用於汽車和工業環境。
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 |
14V 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 |
10 mA(典型值) |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
TO-263(DDPAK-3) |
核心特性
- 固定12V輸出,精度±1%
- 低壓差:1A時典型值0.5V
- 輸出電流高達1A
- 反接保護
- 內置限流和熱關斷
- 寬工作溫度範圍:-40°C 至 +125°C
- 表面貼裝TO-263封裝,節省空間
典型應用場景
- 汽車電子:信息娛樂系統、儀表盤顯示、ADAS模塊
- 工業控制:PLC、電機驅動、傳感器接口
- 電信設備:5G基站電源管理、網絡路由器
- 消費電子:高端音響設備、機頂盒
- 醫療設備:便攜診斷儀器、病人監護系統
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 LM2940CSX-12/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。
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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。
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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。
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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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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。
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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。
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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。
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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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