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  • BP2857D

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Integrated Circuits (ICs) DIP-7

Manufacturer : BusBoard Prototype Systems
Package/Case : DIP-7
Product Categories : Integrated Circuits (ICs)
Datasheet: BP2857D Datasheet (PDF)
RoHs Status: Lead free/RoHS Compliant
In-stock: 500


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BP2857D Product Details

BP2857D is a high-precision step-down LED constant current driver chip.
The chip operates in the inductor current critical continuous mode, suitable for use 85Vac ~ 265Vac full range of input voltage non-isolated step-down type LED constant current power supply.
BP2857D chip integrated 500V power switch, the use of patents The floats are driven by the architecture and the current sensing mode, the chip is working on electricity Very low flow, no auxiliary winding detection and power supply, only need very little Of the external components, you can achieve excellent constant current characteristics, great Saving system cost and volume.
BP2857D chip with a high precision current sampling circuit, at the same time Using a patented constant current control technology to achieve high-precision LED Constant current output and excellent line voltage regulation. The chip is working on electricity Sense current critical mode, the output current does not follow the inductance and LED work Change the voltage changes, to achieve excellent load regulation.
The BP2857D has multiple protection features, including LED open / short circuit Protection, CS resistance short circuit protection, undervoltage protection, chip temperature too Heat regulation and so on.
The BP2857D is available in DIP-7 packages.

■ LED fluorescent lamp
■ LED ceiling light
■ LED bulb light
■ other LED lighting


■ Inductance current critical continuous mode
■ Internal integrated 500V power tube
■ No auxiliary winding detection and power supply required
■ chip ultra low operating current
■ Wide input voltage
■ ± 5% LED output current accuracy
■ LED open circuit protection
■ LED short circuit protection
■ CS resistance short circuit protection
■ chip power supply undervoltage protection
■ Overheat adjustment function
■ In DIP-7 package

Technical Parameters

  • Manufacturer
  • BPS
  • Packing
  • Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
  • RoHs Status
  • Lead free/RoHS Compliant
  • Package/Case
  • DIP-7

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  • **teve***

    Good packing and fast delivery.

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Shipping More
Estimated Delivery Time: Apr 28 - May 03 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.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

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 BP2857D is the original manufacturer or agent of BPS?
We have a professional business development department to strictly test and verify the qualifications of BPS original manufacturers and agents. All BPS suppliers must pass the qualification review before they can publish their BP2857D devices; we pay more attention to the channels and quality of BP2857D products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of BP2857D chips? Including BPS original factory information, application, BP2857D pictures?
You can use Jotrin's intelligent search engine, or filter by Integrated Circuits (ICs) category, or find it through BusBoard Prototype Systems Information page.
Q: Are the BPS's BP2857D price and stock displayed on the platform accurate?
The BPS's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for BP2857D, 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 BP2857D?
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 BP2857D we delivered, we will accept the replacement or return of the BP2857D 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 BP2857D.
(3)The BP2857D 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 BP2857D datasheet pdf, BP2857D pin diagram?
Need any After-Sales service, please feel free contact us:

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