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LT8640IUDC#PBF

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LINEAR TECHNOLOGY LT8640IUDC#PBF DC-DC Switching Step Down Regulator, Adjustable, 3.4V-42Vin, 970mV-41.9Vout, 5Aout, QFN-18

  • Package/Case :
  • 20-WFQFN, 18 Leads,
  • Product Categories :
  • Voltage Regulators
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 2590

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LT8640IUDC#PBF Product Details

The LT8640/LT8640-1 step-down regulator features Silent Switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. An ultralow 2.5µA quiescent current—with the output in full regulation—enables applications requiring highest efficiency at very small load currents.

The LT8640/LT8640-1 allows high VIN to low VOUT conversion at high frequency with a fast minimum top switch on-time of 30ns. The SYNC/MODE pin selects between Burst Mode operation, spread spectrum mode, synchronization to an external clock, and either pulse-skipping (LT8640) or forced continuous mode (LT8640-1).

PackageSYNC/MODE ≠ 0VC COMPH-GRADECLKOUTINTERNAL CAPSLT8640QFNPulse-SkippingInternalYesNoNoLT8640-1QFNFCMInternalYesNoNoLT8640SLQFNFCMInternalNoYesYesLT8643SLQFNFCMExternalNoYesYesLT8640S-2LQFNFCMInternalYesYesNoLT8643S-2LQFNFCMExternalYesYesNo

LT8640IUDC#PBF

Feature

  • Silent Switcher® Architecture
    • Ultralow EMI/EMC Emissions
    • Spread Spectrum Frequency Modulation
  • High Efficiency at High Frequency
    • Up to 96% Efficiency at 1MHz, 12VIN to 5VOUT
    • Up to 95% Efficiency at 2MHz, 12VIN to 5VOUT
  • Wide Input Voltage Range: 3.4V to 42V
  • 5A Maximum Continuous Output, 7A Peak Transient Output
  • Ultralow Quiescent Current Burst Mode® Operation
    • 2.5µA IQ Regulating 12VIN to 3.3VOUT
    • Output Ripple < 10mVP-P
  • Fast Minimum Switch On-Time: 30ns
  • Low Dropout Under All Conditions: 100mV at 1A
  • Forced Continuous Mode (LT8640-1 Only)
  • Safely Tolerates Inductor Saturation in Overload
  • Adjustable and Synchronizable: 200kHz to 3MHz
  • Peak Current Mode Operation
  • Output Soft-Start and Tracking
  • Small 18-Lead 3mm × 4mm QFN and Side Wettable QFN

Applications

  • Automotive and Industrial Supplies
  • General Purpose Step-Down
  • GSM Power Supplies

Technical Parameters

  • Function
  • Step-Down
  • Output Configuration
  • Positive
  • Topology
  • Buck
  • Output Type
  • Adjustable
  • Number of Outputs
  • 1
  • Voltage Input (Min)
  • 3.4V
  • Voltage Input (Max)
  • 42V
  • Voltage Output (Min/Fixed)
  • 0.97V
  • Voltage Output (Max)
  • 42V
  • Current Output
  • 5A
  • Frequency Switching
  • 210kHz ~ 2MHz
  • Synchronous Rectifier
  • Yes
  • Operating Temperature
  • -40??C ~ 125??C (TJ)
  • Mounting Type
  • Surface Mount
  • Package / Case
  • 20-WFQFN, 18 Leads, Exposed Pad
  • Supplier Device Package
  • 20-QFN (3x4)

LT8640IUDC#PBF Datasheet

  • LT8640 Technical Documentation/Data sheet

LT8640IUDC#PBF Related Products

Ratings and Reviews (1)

  • 5 / 5
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  • 4 Stars 0%
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  • 1 Stars 0%
  • **ae-W***
    2019-08-18

    schnell und korrekt abgewickelt, alles bestens

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  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.

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1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

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Q: How does Jotrin guarantee that LT8640IUDC#PBF is the original manufacturer or agent of AD?
We have a professional business development department to strictly test and verify the qualifications of AD original manufacturers and agents. All AD suppliers must pass the qualification review before they can publish their LT8640IUDC#PBF devices; we pay more attention to the channels and quality of LT8640IUDC#PBF products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of LT8640IUDC#PBF chips? Including AD original factory information, Voltage Regulators application, LT8640IUDC#PBF pictures?
You can use Jotrin's intelligent search engine, or filter by Step-Down (Buck) Regulators ; Micropower Buck Regulators category, or find it through Analog Devices, Inc Information page.
Q: Are the AD's LT8640IUDC#PBF price and stock displayed on the platform accurate?
The AD's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for LT8640IUDC#PBF, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of LT8640IUDC#PBF?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LT8640IUDC#PBF we delivered, we will accept the replacement or return of the LT8640IUDC#PBF only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of LT8640IUDC#PBF.
(3)The LT8640IUDC#PBF is unused and only in the original unpacked packaging.
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Analog Devices, Inc

AD
Analog Devices, Inc. was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized module used in test and measurement equipment. In 1967, the company published the first issue of its...
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