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Linear Technology LT8641 Offers a Unique Mix of Features

Linear Technology LT8641 Offers a Unique Mix of Features

LT8641offers Silent Switcher architecture combined with spread spectrum switching frequency modulation, up to 3MHz switching frequency, synchronous rectification, 3 to 65V input voltage range, 3,5A output current and much more.

The LT8641 is a monolithic, constant frequency, current mode synchronous (external schottky diode is not necessary) step-down switching regulator. Its 3V to 65V input voltage range makes it ideal for 12V or 24V automotive and industrial applications. It delivers up to 3.5A of continuous output current and peak loads of 5A. Output voltages can be set in 0.81 to 64V range.

LT8641Silent Switcher, when combined with proper PCB layout, provides almost ideal square wave in the switching node almost without ringing, which reduces HF energy that can potentially radiate outside. When combined with spread spectrum frequency modulation, it reduces EM emissions by more than 25dB even with switching frequencies in excess of 2MHz, enabling it to easily pass the automotive CISPR25 class 5 peak and average EM emission limits.

Minimum typical on-time of only 35ns enables 2MHz constant frequency operation from 24V input to 3.3V output, which allows the use of small sized inductor while avoiding critical noise sensitive frequency bands like AM radio band. For even lower EMI, the device can operate below AM band.

Besides 65V absolute maximum input voltage rating in automotive environments, the dropout behavior is also very important. The LT8641 maintains the close to ideal behavior. The device skips its switch-off cycles in dropout and performs only the minimum required off cycles to keep the internal top switch boost stage voltage sustained. LT8641 maintains a minimum dropout voltage of only 130mV at 1A under all conditions, enabling it to supply 3.3V rail even during automotive cold crank.

The device’s Burst Mode keeps quiescent current under 2.5µA. This is the total supply current consumed by the device, output in regulation, with no load. This mode maintains high efficiency at low output currents while keeping output ripple below 10mVP-P.

In case of interest, please contact us at sales@soselectronic.com

Features:
  • Silent Switcher® Architecture -Ultralow EM Emissions / Spread Spectrum Frequency Modulation
  • Efficiency Up to 95% at 1MHz, Up to 94% at 2MHz
  • Wide Input Voltage Range: 3V to 65V
  • Ultralow Quiescent Current Burst Mode Operation, 2.5µA IQ Regulating 12VIN to 3.3VOUT, Output Ripple < 10mVP-P
  • Minimum Switch-On Time: 35ns
  • Low Dropout Under All Conditions: 130mV at 1A, 500mV at 3.5A
  • Safely Tolerates Inductor Saturation in Overload
  • Adjustable & Synchronizable frequency: 200kHz to 3MHz
  • Peak Current Mode Operation
  • Internal Compensation
  • Output Soft-Start & Tracking

2017050410 / 23.05.2017 / Electronic-components / SOS electronic s.r.o. /

The king among Cat 4 LTE modules
The king among Cat 4 LTE modules
New Quectel EG25-G is an LTE Cat 4 module optimized specially for M2M and IoT applications. It is the worldwide 4G compatible module and thanks to adopting the 3GPP Rel. 11 LTE technology, it delivers maximum data rates up to 150Mbps downlink and 50Mbps uplink. Modul EG25-G is already available to order.
.....
Verified and Improved Differential Pressure Sensors
Sensirion SDP800 series sensors are the reliable solution for precise airflow measurement in most demanding but cost-sensitive HVAC applications, such as VAV controllers, burners, heat recovery ventilation systems and filter monitoring.
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Verified and Improved Differential Pressure Sensors
Technical Support at Your Place during Our “Tools Tour“
Technical Support at Your Place during Our “Tools Tour“
In recent weeks, we've gone on a tour to you, directly to your companies. We believe that in today's digital era, it is truly valuable to see our products live and have chance to talk about them. Moreover, technical advice is priceless.
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7 COLOURS of Terminal Blocks
Green, grey, black, blue, red, yellow and orange - using Euroclamp coloured terminal blocks radically reduces the possibility of incorrect connecting of the cables.
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7 COLOURS of Terminal Blocks
We are expanding the portfolio of IoT products with the world brand USR IoT
We are expanding the portfolio of IoT products with the world brand USR IoT
Our new supplier, USR IoT, is an expert in industrial communication IoT products with a focus on serial data networking and M2M applications. ISO9001 quality management with more than 20 years of experience in business guarantees its expertise.
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Robust industrial connectors - more colours for better price
Connectors of the CA series have a reinforced plastic housing, making them a high-quality and efficient alternative to connectors with metal housings. They are reliable even in harsh environments with high levels of humidity and dust but still easy to connect and install. Practical colour resolution is convenient for both installation and maintenance.
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Robust industrial connectors - more colours for better price
Try “PlusMinus” - an ideal screwdriver for circuit breakers and terminalsvvvvv
Try “PlusMinus” - an ideal screwdriver for circuit breakers and terminalsvvvvv
Special screwdriver, which is neither slotted, nor Phillips type, but it combines the best of them both. And that's really a big PLUS.
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How does the EMC Filter work?
Swiss company Schurter offers EMC filters, common mode chokes, as well as filters integrated with inlet, switch and fuse. Typical EMC filter contains common mode choke and X and Y class capacitors. But how does it work?
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How does the EMC Filter work?
Zhaga. Smart Lighting for Smart Cities
Zhaga. Smart Lighting for Smart Cities
Thanks to sensors and communication modules, modern LED luminaires will also be able to provide smart services. A key part of these luminaires are connectors, such as the LUMAWISE Endurance S series. They can be found in our product range under the TE Connectivity brand, a member of the Zhaga Consortium - the organization for standardization of LED lighting components for public lighting.
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3 practical multimeter sets for reliable measurement
The 3 best-selling multimeters Fluke IMSK for industrial maintenance coming in three sets, offer a great opportunity to have the world’s best multimeter with a clamp multimeter and accessories at a discounted price of 15%.
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3 practical multimeter sets for reliable measurement
The world’s first GSM/NB2 dual-mode module 
The world’s first GSM/NB2 dual-mode module
Quectel Wireless Solutions, the leading global supplier of Internet of Things (IoT) Modules, launched its first LTE Cat NB2/GSM dual-mode module BC92, which supports switchover between GSM and NB-IoT networks and ensures utilizing network coverage of both technologies.
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Get a lot of connectivity for the buck
WizFi360 is fast, affordable and simple plug&play WiFi module WIZnet designed for various IoT applications, mobile and wearable devices.
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Get a lot of connectivity for the buck
Infrared cameras seeing 4x more details than their predecessors
Infrared cameras seeing 4x more details than their predecessors
The new TG267 and TG297 infrared cameras significantly accelerate the thermal diagnostics process. The features like 160x120px resolution, MSX combined image, new laser, larger display or easy data transfer to mobile devices are now available for the better price than you would ever expect.
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FIS5084 Easily Detects HFC Leakage
A brief guide on how the FIS module for refrigerant leads detection works, a summary of its features, and technical details you cannot find in a publicly available datasheet.
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FIS5084 Easily Detects HFC Leakage
Robust enclosures with elegant design
Robust enclosures with elegant design
The new Hammond 1557 Series offers a surprisingly attractive industrial waterproof enclosure solution with three mounting options, for different control panels or monitoring units.
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3 reasons for the TRI Series DC/DC converters
Reinforced insulation system, high common-mode transient immunity, and compact DIP-24 package. With the latest, IT security certificates, the TRACO POWER TRI Series is the perfect choice for demanding applications in industrial, transportation and instrumentation sectors.
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3 reasons for the TRI Series DC/DC converters
Smart dual Nano-SIM card socket
Smart dual Nano-SIM card socket
Two SIM cards give us the choice of an operator with better coverage as well as the possibility to use 4G and LPWA technologies. Attend series 115S holder for 2 nano-SIM cards gives several proven benefits in comparison with the competition.
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Kontakt Trio - set for perfect contact treatment
A strong trio of Kontakt Chemie sprays for quality and reliable contacts, in a discounted package.
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Kontakt Trio - set for perfect contact treatment
Company of the week

KEMET
Interesting video


Arduino LED filament clock


How Intel Makes Chips: Concept to Customer


How Do You Minimize Bubbles in a Two Part Epoxy System?


Adafruit Partners with Panasonic


Computer-On-Modules are world-leading platforms for embedded system designs
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Infineon Technologies AG


TTI, Inc.


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Power Integrations


AXIOMTEK


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VISHAY


STMicroelectronics


Texas Instruments


Advantech


Molex, LLC


ON Semiconductor


NeoPhotonics


Murata Manufacturing Co.,


ICP Deutschland GmbH


SEMTECH


Yamaichi Electronics USA Inc.


Microchip Technology Inc.


EM Microelectronic


Murata Power Solutions Inc


Keysight Technologies


XP Power Limited


Fischer Connectors SA
Calendary
CWIEME Berlin, 26.5.-28.5.2020
SPS Italia, Fiere di Parma, 26.5.-28.5.2020
Wire & Cable Guangzhou, China, 27.5.-29.5.2020
Automechanika Dubai, 7.6.-9.7.2020
hardware+tools, Dubai, UAE, 7.6.-9.6.2020
ELEKTRO 2020, MOSCOW, Russia, 8.6.-11.6.2020
PCIM Asia, Shanghai, 1.7.-3.7.2020
PCIM Europe, Nuremberg, 28.7.-30.7.2020
SMTconnect 2020, Nuremberg, 28.7.-30.7..2020
SPS Automation Middle East, Dubai, 20.8.-21.8.2020
Intersec Buenos Aires, 26.8.-28.8.2020
Automechanika Frankfurt, DE, 8.9.-12.9.2020
BATTERY JAPAN, Osaka, 9.9.-11.9.2020
IMTS2020, 14.9.-19.9.2020, Chicago, IL
Interlight Russia, Moscow, 14.9.-17.9.2020
Prolight + Sound NAMM, Moscow, 17.9.-19.9.2020
NEPCON Nagoya, Japan, 21.10.-23.10.2020
Prolight + Sound Shanghai, 28.10.-30.10.2020
SPS 2020, Nuremberg, 24.11.-26.11.2020
NEPCON Japan, Tokio, 20.1.-22.1.2021
ISE 2021, Barcelona, Spain, 2.2.-5.2.2021
DistribuTECH, 9.2.-11.2.2021, San Diego, CA
BATTERY JAPAN, Tokyo, 3.3.-5.3.2021
BATTERY JAPAN, Osaka, 29.9.-1.10.2021
DistribuTECH, 25.1.-27.1.2022, Dallas, TX
DistribuTECH, 7.2.-9.2.2023, San Diego, CA
DistribuTECH, 23.1.-25.1.2024, Indianapolis, IN
DistribuTECH, 11.2.-13.2.2025, Dallas, TX
Interesting video
The ISS Design Challenge ...
Interesting video
Mouser Electronics Warehouse Tour with Grant Imahara
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