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LT3971IDD#TRA1PBF

38V, 1.2A, 2MHz Step-Down Regulator with 2.8μA Quiescent Current

  • Package/Case :
  • QFN
  • Product Categories :
  • Step-Down (Buck) Regulators ; Micropower Buck Regulators
  • RoHs Status:
  • Lead free/RoHS Compliant
  • In-stock:
  • 325

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LT3971IDD#TRA1PBF Product Details

The LT3971IDD#TRA1PBF is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 38V. Low quiescent current design consumes only 2.8μA of supply current while regulating with no load. Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping the output ripple below 15mV in a typical application. An internally compensated current mode topology is used for fast transient response and good loop stability. A high efficiency 0.33Ω switch is included on the die along with a boost Schottky diode and the necessary oscillator, control and logic circuitry. An accurate 1V threshold enable pin can be used to shut down the LT3971, reducing the input supply current to 700nA. A capacitor on the SS pin provides a controlled inrush current (soft-start). A power good flag signals when VOUT reaches 91% of the programmed output voltage. The LT3971IDD#TRA1PBF is available in small 10-lead MSOP and 3mm × 3mm DFN packages with exposed pads for low thermal resistance. A 16-lead MSOP is also offered which has enhanced pin-to-pin fault tolerance.

VoutIoutVref AccuracyLT3971Adj1.2A2.5%LT3971-3.33.3V1.2A2.5%LT3971-55V1.2A2.5%LT3971AAdj1.3A1.5%LT3971A-55V1.3A1.5%

Feature

  • Ultralow Quiescent Current: 2.8μA IQ Regulating 12VIN to 3.3VOUT
  • Fixed Output Voltages: 3.3V, 5V, 2.1μA IQ Regulating 12VIN to 3.3VOUT
  • Low Ripple Burst Mode® Operation: Output Ripple < 15mVP-P
  • Wide Input Voltage Range: 4.3V to 38V
  • 1.2A Maximum Output Current
  • Adjustable Switching Frequency: 200kHz to 2MHz
  • Synchronizable Between 250kHz to 2MHz
  • Fast Transient Response
  • Accurate 1V Enable Pin Threshold
  • Low Shutdown Current: IQ = 700nA
  • Power Good Flag
  • Soft-Start Capability
  • Internal Compensation
  • Output Voltage: 1.19V to 30V
  • Small Thermally Enhanced 10-Lead MSOP, 16-Lead MSOP and (3mm × 3mm) DFN Packages

Applications

  • Automotive Battery Regulation
  • Power for Portable Products
  • Industrial Supplies

LT3971IDD#TRA1PBF Pinout
(Picture: Pinout)

LT3971IDD#TRA1PBF Block Diagram
(Picture: Diagram)

Technical Parameters

  • Number of Outputs
  • 1
  • Vinmin | V
  • 4.3
  • Vinmax | V
  • 38
  • Output Currenttyp | A
  • 1.2
  • Isupplytyp | A
  • 1.7µ
  • Monolithic
  • Yes
  • Synchronous
  • No

LT3971IDD#TRA1PBF Documents

  • LT3971 Technical Documentation/Data sheet

LT3971IDD#TRA1PBF Related Products

Ratings and Reviews (1)

  • 5 / 5
  • 5 Stars 100%
  • 4 Stars 0%
  • 3 Stars 0%
  • 2 Stars 0%
  • 1 Stars 0%
  • **eter***
    2019-08-18

    Schnelle Abwicklung und Versand. DANKE !!

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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 LT3971IDD#TRA1PBF is the original manufacturer or agent of LINEAR?
We have a professional business development department to strictly test and verify the qualifications of LINEAR original manufacturers and agents. All LINEAR suppliers must pass the qualification review before they can publish their LT3971IDD#TRA1PBF devices; we pay more attention to the channels and quality of LT3971IDD#TRA1PBF products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of LT3971IDD#TRA1PBF chips? Including LINEAR original factory information, Step-Down (Buck) Regulators ; Micropower Buck Regulators application, LT3971IDD#TRA1PBF pictures?
You can use Jotrin's intelligent search engine, or filter by Step-Down (Buck) Regulators ; Micropower Buck Regulators category, or find it through Linear Technology Corp. (ADI) Information page.
Q: Are the LINEAR's LT3971IDD#TRA1PBF price and stock displayed on the platform accurate?
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Q: What is the process for returns or replacement of LT3971IDD#TRA1PBF?
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 LT3971IDD#TRA1PBF we delivered, we will accept the replacement or return of the LT3971IDD#TRA1PBF 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.
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Linear Technology Corp. (ADI)

Linear
Linear Technology designs, manufactures and markets a wide range of high performance standard integrated circuits. Product applications include telecommunications, cellular phones, networking products, notebook and desktop computers, video/multimedia, industrial instrumentation, automotive electroni...

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