Products > Integrated Circuits (ICs) > Power Management ICs > LDL1117S33R
  • LDL1117S33R

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LDO Regulator Pos 3.3V 1.2A 4-Pin(3+Tab) SOT-223 T/R

Manufacturer : STMicroelectronics, Inc
Package/Case : SOT-223
Product Categories : Voltage Regulators - Linear
Datasheet: LDL1117S33R Datasheet (PDF)
RoHs Status: Lead free/RoHS Compliant
In-stock: 3365


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LDL1117S33R Product Details

The LDL1117S33R provides 1.2 A of maximum current with an input voltage range from 2.5 V to 18 V, and a typical dropout voltage of 350 mV @ 1.2 A.

The high power supply rejection ratio of 87 dB at 120 Hz, rolling down to more than 40 dB at 100 kHz, makes the LDL1117S33R suitable for direct regulations in SMPS and secondary linear regulations in DC-DC converters.
This device includes current limit, SOA and thermal protections.



  • Input voltage from 2.5 V to 18 V
  • 20 V AMR
  • Available on fixed output voltages: 1.2 V (1.185 V), 1.5 V, 1.8 V, 2.5 V, 3 V, 3.3 V, 5.0 V (other options are available on request)
  • Guaranteed output current 1.2 A
  • Typical dropout 350 mV @ 1.2 A
  • Internal thermal, current and power limitation
  • High PSRR 87 dB @ 120 Hz
  • Operating temperature range: -40 °C to 125°C
  • Package SOT223

Technical Parameters

  • Output Configuration
  • Positive
  • Output Type
  • Fixed
  • Number of Regulators
  • 1
  • Voltage Input (Max)
  • 18V
  • Voltage Output (Min/Fixed)
  • 3.3V
  • Voltage Dropout (Max)
  • 0.6V @ 1.2A
  • Current Output
  • 1.2A
  • Current Quiescent (Iq)
  • 500??A
  • PSRR
  • 87dB ~ 65dB (120Hz ~ 100kHz)
  • Protection Features
  • Over Current, Over Temperature, Under Voltage Lockout (UVLO)
  • Operating Temperature
  • -40??C ~ 125??C (TJ)
  • Mounting Type
  • Surface Mount
  • Package / Case
  • TO-261-4, TO-261AA
  • Supplier Device Package
  • SOT-223

LDL1117S33R Related Products

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  • **anki***

    Thank you very much, fast shipping and well packaged!

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

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  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
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  • $20.00-$45.00 (0.50 KG)
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  • $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 LDL1117S33R 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 LDL1117S33R devices; we pay more attention to the channels and quality of LDL1117S33R products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of LDL1117S33R chips? Including ST original factory information, Voltage Regulators - Linear application, LDL1117S33R pictures?
You can use Jotrin's intelligent search engine, or filter by Power Management ; Linear Voltage Regulators ; Low Dropout (LDO) Linear Regulators category, or find it through STMicroelectronics, Inc Information page.
Q: Are the ST's LDL1117S33R 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 LDL1117S33R, 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 LDL1117S33R?
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 LDL1117S33R we delivered, we will accept the replacement or return of the LDL1117S33R 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 LDL1117S33R.
(3)The LDL1117S33R 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 LDL1117S33R datasheet pdf, LDL1117 pin diagram?
Need any After-Sales service, please feel free contact us:

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ST Microelectronics is a global independent semiconductor company and a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications, and that designs, develops, manufactures and markets a broad spectrum of products....
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