Products > Integrated Circuits (ICs) > M51977P

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  • Package/Case :
  • DIP-16
  • Product Categories :
  • Integrated Circuits (ICs)
  • RoHs Status:
  • Lead free/RoHS Compliant
  • In-stock:
  • 697


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M51977P Product Details

Mitsubishi IC type M51977P, FP are the off-ine primary .PWM controller which are especially designed for SMPS toget the regulated DC voltage from AC power supply.
As the totempole type high power-driver-circuit is inte-grated in these IC. these IC can drive the MOS-FET withtast rise and fast fall output pulse.
Type M51977P, FP have the functions of not only high fre-quency OSC and fast output drive but also current limit withfast response and high sensibility so the true "fast switchingregurator" can be realized.

They have another big features of current protection toshort and over current at secondary side, owing to the inte-grated timer type protection-circuit if few parts are addedto the primary circuit.

Type M51977P. FP are the powerful and unique one so theSMPS with M51977P, FP will be able to realize such the fe-atures as:

.500 kHz operation of MOS-FET.
 · Output current of +2A
 · Fast rise time of 60ns and fast fall time of 40ns
 · Small through current owing to "modified totempoledriver circuit.'
. Compact and light-weight power supply
  . Small start-up current·  80uA typ.

  · Big difference between "start-up voltage" and "stopvoltage" makes the smoothing capacitor of the power input section small,
    Start-up threshold 16V, stop voltage 10V
  . Packages with high power dissipation are used to with-stand the heat generated by the gate-drive current ofMOS FET
    16-pin DIP, 20-pin SOP 1.5W (at 25C)
. Simplified peripheral circuit with protection circuit and built-in large capacity totempole output
  . High-speed current limiting circuit using puise-by-pulse method (Two systems of CLM+pin, CLM- pin)

  Protection by intermittent operation of output over current--Timer protection circuit

  . Over-voltage protection circuit (OVP)
  . Protection circuit for output miss action at low supplyvoltage (UVLO)
. High-performance and highly functional power supply

  · Triangular wave oscillator for easy dead time setting

Feed lorward regulator, Fly back regulator


M51977P Pinout
(Picture: Pinout)

M51977P Block Diagram
(Picture: Diagram)

Technical Parameters

  • Manufacturer
  • Packing
  • Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
  • RoHs Status
  • Lead free/RoHS Compliant
  • Package/Case
  • DIP-16

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Estimated Delivery Time: Oct 06 - Oct 11 days (choose Expedited at checkout).

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  • Lead Time
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  • 7-30 days

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


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  • 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 M51977P is the original manufacturer or agent of MITSUBISHI?
We have a professional business development department to strictly test and verify the qualifications of MITSUBISHI original manufacturers and agents. All MITSUBISHI suppliers must pass the qualification review before they can publish their M51977P devices; we pay more attention to the channels and quality of M51977P products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of M51977P chips? Including MITSUBISHI original factory information, application, M51977P pictures?
You can use Jotrin's intelligent search engine, or filter by Integrated Circuits (ICs) category, or find it through Mitsubishi Electronics Information page.
Q: Are the MITSUBISHI's M51977P price and stock displayed on the platform accurate?
The MITSUBISHI's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for M51977P, 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 M51977P?
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 M51977P we delivered, we will accept the replacement or return of the M51977P 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 M51977P.
(3)The M51977P 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 M51977P datasheet pdf, M51977P pin diagram?
Need any After-Sales service, please feel free contact us:

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