Products > Integrated Circuits (ICs) > LTC3455EUFPBF

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Dual DC/DC Converter with USB Power Manager and Li-Ion Battery Charger

  • Package/Case :
  • QFN-24
  • Product Categories :
  • Battery Management ; PMIC (DC/DC, PowerPath & Battery Charger)
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 3000


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LTC3455EUFPBF Product Details

The LTC3455/LTC3455-1 are complete power management solutions for a variety of portable applications. These devices contain two synchronous step-down DC/DC converters, a USB power controller, a full-featured Li-Ion battery charger, a Hot Swap output, a low-battery indicator, and numerous internal protection features. The LTC3455/LTC3455-1 provide a small, simple solution for obtaining power from three different power sources: a single-cell Li-Ion battery, a USB port, and a wall adapter. Current drawn from the USB bus is accurately limited under all conditions. Whenever a USB or a wall adapter is present, the battery charger is enabled and all internal power for the device is drawn from the appropriate external power source. All outputs are discharged to ground during shutdown to provide complete output disconnect. These devices are available in a 4mm × 4mm 24-pin exposed-pad QFN package.



  • Seamless Transition between Input Power Sources:
    • Li-Ion Battery,
    • USB, and
    • 5V Wall Adapter
  • Accurate USB Current Limiting (500mA/100mA)
  • Two High Efficiency DC/DC Converters: Up to 96%
  • Thermal Regulation Maximizes Battery Charge Rate without Risk of Overheating
  • Full-Featured Li-Ion Battery Charger with 4.2V Float Voltage for LTC3455 and 4.1V for LTC3455-1
  • 4.1V Float Voltage (LTC3455-1) Improves Battery Life and High Temperature Safety Margin
  • Hot Swap™ Output for SDIO and Memory Cards
  • Pin-Selectable Burst Mode® Operation
  • Output Disconnect: All Outputs Discharged to Ground During Shutdown
  • Available in a 4mm × 4mm × 0.75mm 24-Pin QFN Package


  • Handheld Computers
  • Digital Cameras
  • MP3 Players

LTC3455EUFPBF Pinout
(Picture: Pinout)

LTC3455EUFPBF Block Diagram
(Picture: Diagram)

Technical Parameters

  • Number of Outputs
  • 2
  • Vinmin | V
  • 4.3
  • Vinmax | V
  • 5.5
  • Buck Output Currenttyp | A
  • 400m, 600m
  • Buck Boost Output Currenttyp | A
  • -
  • LDO Output Currenttyp | A
  • -
  • Battery Chemistry
  • Li-Ion, Li-Polymer

LTC3455EUFPBF Documents

  • LTC3455 Technical Documentation/Data sheet

LTC3455EUFPBF Related Products

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Estimated Delivery Time: Aug 03 - Aug 08 days (choose Expedited at checkout).

Shipping & Payment


  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
  • 3-7 days
  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
  • $25.00-$65.00 (0.50 KG)
  • 2-5 days
  • $25.00-$45.00 (0.50 KG)
  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


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.


Q: How does Jotrin guarantee that LTC3455EUFPBF 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 LTC3455EUFPBF devices; we pay more attention to the channels and quality of LTC3455EUFPBF products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of LTC3455EUFPBF chips? Including LINEAR original factory information, Battery Management ; PMIC (DC/DC, PowerPath & Battery Charger) application, LTC3455EUFPBF pictures?
You can use Jotrin's intelligent search engine, or filter by Battery Management ; PMIC (DC/DC, PowerPath & Battery Charger) category, or find it through Linear Technology Corp. (ADI) Information page.
Q: Are the LINEAR's LTC3455EUFPBF price and stock displayed on the platform accurate?
The LINEAR's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for LTC3455EUFPBF, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
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 LTC3455EUFPBF?
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 LTC3455EUFPBF we delivered, we will accept the replacement or return of the LTC3455EUFPBF 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 LTC3455EUFPBF.
(3)The LTC3455EUFPBF is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as LTC3455EUFPBF datasheet pdf, LTC3455 pin diagram?
Need any After-Sales service, please feel free contact us:

Linear Technology Corp. (ADI)

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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