SPX381919M5-L-5-0-0/TR


500 مللي أمبير LDO، ثابت 5.0 فولت، تسرب 340 مللي فولت، ضوضاء 40 µVRMS، 90 µA Iq، SOT-23-5، دبوس تمكين

5600

المخزون الفعال

Image for reference only

جزء الشركة المصنعة : جزء الشركة المصنعة

SPX381919M5-L-5-0-0/TR

الحزمة : الحزمة

SOT-23-5 (SC-74A, SOT-753)

العلامة التجارية : العلامة التجارية
توصيات أخرى قد تكون مهتماً بها.
الوصف

نظرة عامة على المنتج

إن SPX3819M5-L-5-0/TR هو منظم جهد منخفض الضوضاء منخفض التسرب (LDO) بقدرة 500 مللي أمبير، ويوفر خرجًا ثابتًا 5.0 فولت. تم تصميمه في الأصل من قبل Sipex/Exar (الآن MaxLinear)، ويتميز بتيار هادئ منخفض للغاية يبلغ 90 ميجا أمبير، وانقطاع منخفض يبلغ 340 ميجا فولت عند التحميل الكامل، وضوضاء خرج منخفضة تصل إلى 40 ميجا فولت في الثانية مع مكثف تجاوز. يشتمل الجهاز على حماية عكسية للبطارية، والحد من التيار، والإغلاق الحراري، ودبوس تمكين متوافق مع المنطق، وموجود في حزمة SOT-23-5 مدمجة.

المواصفات الرئيسية

الشركة المصنعة ماكس لينير (سيبكس/إكسار)
جهد الخرج 5.0 فولت (ثابت)
الحد الأقصى لتيار الإخراج الأقصى 500 مللي أمبير
نطاق جهد الإدخال 2.5 فولت إلى 16 فولت
جهد التسرب 340mV @ 500mA
تيار التهدئة 90 ميجا أمبير نموذجي عند حمل 100 مللي أمبير
PSRRR 70 ديسيبل
ضوضاء الإخراج 40 ميكروفولت في الثانية مع مكثف BYP
دقة الإخراج ± 1%
الحد الحالي 800 مللي أمبير نموذجي
تمكين الإدخال متوافق مع المنطق (VIH > 2 فولت، VIL < 0.4V)
درجة حرارة التشغيل -40 درجة مئوية إلى +125 درجة مئوية
الحزمة SOT-23-5
سعر الميزانية $0.11 @ 1KU

الميزات

  • انخفاض التسرب: 340 مللي فولت عند حمولة كاملة تبلغ 500 مللي أمبير
  • تيار ساكن منخفض للغاية: 90 ميجا أمبير عند حمل 100 مللي أمبير
  • تشويش منخفض للغاية: 40 µVRMS (10 هرتز - 100 كيلو هرتز) مع مكثف تجاوز
  • دقة إخراج عالية: ± 1%
  • دبوس التمكين المتوافق مع المنطق مع تيار خارج الوضع صفر
  • حماية البطارية العكسية
  • الحد الحالي والإيقاف الحراري
  • 70 ديسيبل PSRRR لرفض التموج الممتاز
  • متوفر في حزم SOT-23-5، وNSOIC-8، وDFN-8

التطبيقات

  • أجهزة محمولة تعمل بالبطارية
  • الهواتف اللاسلكية وأنظمة التحكم اللاسلكية
  • أجهزة الكمبيوتر المحمولة والكمبيوترات الدفترية
  • التنظيم اللاحق لتبديل المحولات
  • الدوائر التناظرية ودوائر الاستشعار منخفضة الضوضاء

The SPX3819M5-L-5-0/TR is a 500mA low-noise low-dropout voltage regulator from MaxLinear’s SPX3819 family, providing a fixed 5.0V output with ±1% accuracy. Originally designed by Sipex Corporation (later Exar, now MaxLinear), the device features a low dropout voltage of 340mV at full 500mA load and ultra-low quiescent current of 90µA at 100mA output. A reference bypass pin (BYP) enables output noise as low as 40µVRMS when used with an external capacitor, making it suitable for noise-sensitive analog and RF applications. The logic-compatible enable pin allows the regulator to be switched off, reducing power consumption to near zero. Comprehensive protection includes reverse battery protection, current limiting (800mA typical), and thermal shutdown. The SOT-23-5 package provides a compact footprint for space-constrained designs.

Regulation Loop

The SPX3819 uses a PMOS pass transistor driven by an error amplifier that compares the output voltage (via an internal resistor divider for fixed-voltage versions) with an internal bandgap reference. The PMOS topology enables low dropout operation since the pass element operates as a variable resistor rather than a constant-current source, minimizing the voltage differential required between input and output.

Enable and Shutdown

The EN pin provides logic-level on/off control. When EN is above 2.0V, the regulator is enabled. When EN is below 0.4V, the pass transistor is turned off and ground current drops to near zero, effectively disabling the output. This enables power sequencing and battery conservation in portable systems.

Noise Reduction via Bypass

The BYP pin connects to the internal bandgap reference through a high-impedance node. A 10nF capacitor from BYP to GND filters reference noise, reducing output noise from 300µVRMS to 40µVRMS (10Hz-100kHz). The capacitor also slows the output ramp-up rate, which may be beneficial or detrimental depending on the application’s startup timing requirements.

Protection Mechanisms

Current limiting activates at approximately 800mA, protecting the device and downstream circuitry from short-circuit faults. Thermal shutdown disables the output when the junction temperature exceeds approximately 160°C. Reverse battery protection prevents damage when the input polarity is reversed.

دبوس الاسم النوع الوظيفة
1 EN المدخلات Enable input (active high, VIH > 2V, VIL < 0.4V)
2 GND أرضي Ground connection
3 في المدخلات Supply voltage input (2.5V to 16V)
4 BYP/ADJ المدخلات Reference bypass for noise reduction (fixed versions) / adjust for adjustable versions
5 انتهى المخرجات Regulated 5.0V output
  • Battery-powered portable devices requiring efficient 5V regulation with minimal dropout and ultra-low quiescent current
  • Low-noise sensor and analog circuits where BYP capacitor reduces output noise to 40µVRMS
  • Cordless phones and radio control systems needing reverse battery protection and enable-controlled power
  • Post-regulation for switching converters leveraging 70dB PSRR to suppress switching ripple
  • Embedded systems with power sequencing using the enable pin for controlled startup order
الشركة المصنعة رقم الجزء الحزمة الملاحظات
MaxLinear SPX3819M5-L-3-3/TR SOT-23-5 Same series, 3.3V fixed output variant
MaxLinear SPX3819M5-L-1-8 SOT-23-5 Same series, 1.8V fixed output variant
الرقاقة الدقيقة MIC5219-5.0YM5-TR SOT-23-5 Pin-compatible, 500mA, 5.0V, similar dropout
TI TLV70050DBVR SOT-23-5 200mA, 5.0V, very low Iq, lower current
شركة ديودز AP2112K-5.0 SOT-23-5 600mA, 5.0V, lower dropout alternative
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ضمان الجودة

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

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Contact Information

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Tel / WhatsApp: +86 13760382860

الخدمة والتغليف

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

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Our senior engineer team provides free technical consultation, model selection guidance and original manufacturer datasheets. We assist customers in solving problems related to product R&D, circuit design and component application, providing reliable technical support for project progress.

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Relying on our global supply chain network, we professionally source scarce components, obsolete parts and customized special components to efficiently solve your procurement difficulties.

6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

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We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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