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PFC Controller, 10.3V to 22.5V Supply, 65 µA Startup, 5mA Operating, SSOP-10
| メーカー : | STMicroelectronics, Inc |
|---|---|
| パッケージ : | SSOP10 |
| 製品 : | Power Factor Correction ICs |
| Datasheet: | L4984D Datasheet (PDF) |
| RoHs Status: | Rohs |
| 在庫: | 1289 |
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L4984D 製品詳細
The L4984D is a current-mode PFC controller operating with line-modulated fixed-off-time (LM-FOT) control. A proprietary LM-FOT modulator allows fixed-frequency operation for boost PFC converters as long as they are operated in CCM (continuous conduction mode).
The chip comes in a 10-pin SO package and offers a low-cost solution for CCM-operated boost PFC pre-regulators in EN61000-3-2 and JEIDA-MITI compliant applications, in a power range that spans from few hundred W to 1 KW and above. The highly linear multiplier includes a special circuit, able to reduce the crossover distortion of the AC input current, that allows wide-range-mains operation with a reasonably low THD, even over a large load range. The output voltage is controlled by means of a voltage-mode error amplifier and an accurate (1% at Tj = 25 °C) internal voltage reference. Loop stability is optimized by the voltage feedforward function (1/V2correction), which in this IC uses a proprietary technique that also significantly improves line transient response in the case of mains drops and surges (“bi-directional”). The device features low consumption and includes a disable function suitable for IC remote on/off. These features allow use in applications which also comply with the latest energy saving requirements (Blue Angel, ENERGY STAR, Energy 2000, etc.). In addition to overvoltage protection able to keep the output voltage under control during transient conditions, the IC is also provided with protection against feedback loop failures or erroneous settings. Other onboard protection functions allow that brownout conditions and boost inductor saturation can be safely handled. Soft-start limits peak current and extends off-time to prevent flux runaway in the initial cycles. The totem pole output stage, capable of 600 mA source and 800 mA sink current, is suitable for big MOSFETs or IGBT drive.
アプリケーション/パラメータの範囲
- Line-modulatedfixed-off-time(LM-FOT)controlofCCM-operatedPFCpre-regulators
- ProprietaryLM-FOTmodulatorfornearlyfixed-frequencyoperation
- ProprietarymultiplierdesignforminimumTHDofACinputcurrent
- Fast“bi-directional”inputvoltagefeedforward(1/V2correction)
- Accurateadjustableoutputovervoltageprotection
- Protectionagainstfeedbackloopfailure(latchedshutdown)
- Inductorsaturationprotection
技術的パラメータ
- Packaging
- Tube
L4984D Datasheet
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L4984D
L4984D 特殊な製品に関連する
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- $20.00-$40.00 (0.50 KG)
- 2-5 days
- Fedex
- $20.00-$40.00 (0.50 KG)
- 3-7 days
- UPS
- $20.00-$45.00 (0.50 KG)
- 2-5 days
- TNT
- $25.00-$65.00 (0.50 KG)
- 2-5 days
- EMS
- $25.00-$45.00 (0.50 KG)
- 5-14 days
- REGISTERED AIR MAIL
- $2.00-$3.00 (0.10 KG)
- 7-30 days
Processing Time：Shipping fee depend on different zone and country.
支払い
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- Wire Transfer
- charge US$30.00 banking fee.
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最小発注数量がの1pcsから始まります。
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最低国際海運料金は$ 2.00米から始まります。
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すべての製品の90日間の品質保証。
梱包
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Step1: Products
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Step2: Vacuum Packaging
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Step3: Anti-Static Bag
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Step4: Individual Packaging
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Step5: Packaging Boxes
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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.
保証
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.
FAQ:
- Q: How does Jotrin guarantee that L4984D is the original manufacturer or agent of ST?
- We have a professional business development department to strictly test and verify the qualifications of ST original manufacturers and agents. All ST suppliers must pass the qualification review before they can publish their L4984D devices; we pay more attention to the channels and quality of L4984D products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
- Q: How to find the detailed information of L4984D chips? Including ST original factory information, Power Factor Correction ICs application, L4984D pictures?
- You can use Jotrin's intelligent search engine, or filter by Power Management ; AC-DC Converters ; PFC Controllers category, or find it through STMicroelectronics, Inc Information page.
- Q: Are the ST's L4984D price and stock displayed on the platform accurate?
- The ST's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for L4984D, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
- Q: Can I place an order offline?
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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?
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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 L4984D?
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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 L4984D we delivered, we will accept the replacement or return of the L4984D 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 L4984D.
(3)The L4984D 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 L4984D datasheet pdf, L4984D pin diagram?
- Need any After-Sales service, please feel free contact us: sales@jotrin.com
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