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L6920DTR

Synchronous boost DC-DC, 0.6-5.5Vin, 3.3V/5V/adj out, 120mΩ switches, 1A limit, TSSOP-8

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Pieza del fabricante：

L6920DTR

Paquete：

TSSOP-8

Marca：
Categorías de productos：
Compromiso de calidad
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Descripción

Productos

The L6920DTR from STMicroelectronics is a high-efficiency synchronous step-up (boost) DC-DC converter that operates from input voltages as low as 0.6V with guaranteed startup at 1V. It integrates a 120 mΩ N-channel switch and 120 mΩ P-channel synchronous rectifier, requiring only three external components to deliver fixed 3.3V or 5V output, or adjustable output from 2V to 5.2V.

Especificaciones

  • Input Voltage: 0.6V ~ 5.5V (operating), 1V (startup)
  • Output Voltage: 3.3V / 5V fixed or 2V ~ 5.2V adjustable
  • Switch RDS(on): 120 mΩ (N-ch active switch)
  • Synchronous Rectifier: 120 mΩ (P-ch, integrated)
  • Current Limit: 0.8A ~ 1.2A (typ 1A)
  • Quiescent Current: 9 µA typ (Vout=3.3V)
  • Shutdown Current: 0.1 µA typ
  • Switching: Variable frequency PFM control
  • Maximum On Time: 5 µs typ
  • Minimum Off Time: 1 µs typ
  • Reference Voltage: 1.23V
  • Low Battery Detector: Yes (1.23V threshold)
  • Reverse Battery Protection: Yes
  • Operating Temperature: -40°C ~ 85°C
  • Package: TSSOP-8

Características

  • Startup at 1V from a single battery cell
  • Internal synchronous rectifier eliminates external Schottky diode
  • Zero shutdown current (0.1 µA)
  • Fixed 3.3V/5V or adjustable output with 2 external resistors
  • Low battery voltage detection with open-drain output
  • Reverse battery protection
  • Only 3 external components required
  • Variable frequency PFM for high efficiency at light load

Aplicaciones

  • Single-cell to 3-cell battery powered devices
  • PDA and handheld instruments
  • Cellular and cordless phones
  • GPS receivers
  • Digital cameras

The L6920DTR from STMicroelectronics is a monolithic synchronous step-up converter designed for battery-powered applications where high efficiency and minimal component count are essential. The device integrates both the N-channel active switch and P-channel synchronous rectifier, eliminating the need for an external Schottky diode and reducing component count to just three: an inductor, an input capacitor, and an output capacitor. The 0.6V minimum operating voltage enables operation from a nearly depleted single battery cell, while the 1V guaranteed startup ensures reliable initialization. The variable frequency PFM control scheme maintains high efficiency across the entire load range, from light load (µA range) to full load (hundreds of mA). The DTR suffix indicates TSSOP-8 tape and reel packaging.

The L6920DTR uses a pulse-frequency modulation (PFM) control scheme where the switching frequency varies with load current to maintain high efficiency across the full load range. When the output voltage drops below the regulation threshold, the N-channel MOSFET turns on and energy is stored in the external inductor (TON phase). After a maximum on time of 5 µs (or when the current limit of 1A is reached), the N-channel switch turns off and the P-channel synchronous rectifier turns on, transferring the inductor energy to the output (TOFF phase). The synchronous rectifier remains on until the inductor current drops to zero (discontinuous conduction mode) or the output voltage exceeds the regulation threshold. At light loads, the switching frequency naturally decreases, minimizing gate drive and switching losses. The integrated low-battery comparator monitors the input voltage through the LBI pin and asserts the open-drain LBO output when the voltage drops below the 1.23V threshold.

Pin Nombre Función
1 FB Output voltage feedback (GND=5V, OUT=3.3V, or external divider)
2 LBI Low battery detect input (threshold=1.23V)
3 LBO Low battery detect output (open-drain, active-low)
4 REF 1.23V reference voltage output (bypass with 100nF)
5 SHDN Shutdown control (low=shutdown, high=operating)
6 GND Suelo
7 LX Inductor connection (switch node)
8 OUT Power output and sense connection

The L6920DTR excels in single-cell alkaline or NiMH battery applications where the 1V startup and 0.6V operating capability extract maximum energy from the battery. In GPS receivers, it provides a stable 3.3V supply from a single Li-ion cell. For digital cameras, the 5V output option powers CCD/CMOS sensor circuits from a 3.6V lithium battery. The low battery detection feature eliminates the need for a separate voltage monitor IC, reducing BOM count. In PDA and handheld devices, the 0.1 µA shutdown current preserves battery life during long idle periods.

Modelo Fabricante Diferencia clave
L6920DC STMicroelectronics MSOP-8, 0.8V startup, up to 1MHz
TPS61070 Texas Instruments Similar boost, 1.8-5.5Vout, SC-70
MAX1724 Dispositivos analógicos 1.5V startup, SOT-23-5
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Garantía de calidad

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.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
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4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

5. Traceability Management System

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If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

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

 

Envíos y pagos

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

1. Payment Terms

We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
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  1. Settlement Currency

     

    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

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We partner with leading global logistics providers to ensure safe and fast delivery worldwide. Relevant details are listed below:
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  • Economy Logistics: Air freight and sea freight for large-volume cargo
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  • Air Freight: 7 – 12 working days
  • Sea Freight: 25 – 40 working days for heavy and large bulk cargo
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  • Free international express delivery is offered for large orders. Terms for long-term partners can be negotiated separately.
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  1. MOQ & Sample Service

     

    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

  2. Packaging Standard

     

    All electronic components are packed with professional anti-static and shockproof materials. Original factory packaging is available for branded chips and integrated circuits.

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  1. Import Duties & Taxes

     

    All import duties, customs clearance fees and local taxes incurred for international shipments shall be borne by the buyer. We will provide complete customs documents to assist you with clearance procedures.

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5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Servicio y embalaje

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.

4. Professional Technical Support

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.

5. Sourcing for Special Components

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

  • All components are packed separately to avoid damage caused by friction and collision;
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2. Classified Professional Packaging

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  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

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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