Products > Integrated Circuits (ICs) > Power Management ICs > ST1S14PHR

Images are for reference only.


Hot Sale

Conv DC-DC 5.5V to 48V Step Down Single-Out 1.22V 3A 8-Pin HSOP EP T/R

Manufacturer : STMicroelectronics, Inc
Package/Case : HSOP-8
Product Categories : DC/DC Switching Regulators
Datasheet: ST1S14PHR Datasheet (PDF)
RoHs Status: Lead free / RoHS Compliant
In-stock: 125000


Request for Quotation

Warm Tips: Please fill out the below form and we will contact you as soon as possible.

ST1S14PHR Product Details


The ST1S14PHR is a step-down monolithic power switching regulator able to deliver up to 3 A DC current to the load depending on the application conditions. The high current level is also achieved thanks to a HSOP8 package with exposed frame, that allows to reduce the Rth(JA) down to approximately 40 °C/W. The output voltage can be set from 1.22 V. 

The device uses an internal Nchannel DMOS transistor (with a typical RDS(on) of 200 mΩ) as the switching element to minimize the size of the external components. The internal oscillator fixes the switching frequency at 850 kHz. Power good open collector output validates the regulated output voltage as soon as it reaches the regulation. 

Pulse-by-pulse current limit offers an effective constant current short-circuit protection. Current foldback decreases overstress in a persistent short-circuit condition.

• 3 A DC output current
• Operating input voltage from 5.5 V to 48 V
• 850 kHz internally fixed switching frequency
• Internal soft-start
• Power good open collector output
• Current mode architecture
• Embedded compensation network
• Zero load current operation
• Internal current limiting
• Inhibit for zero current consumption
• 2 mA maximum quiescent current over temperature range
• 250 mΩ typ. RDS(on)
• Thermal shutdown



  • 3 A DC output current
  • Operating input voltage from 5.5 V to 48 V
  • 850 kHz internally fixed switching frequency
  • Internal soft-start
  • Power good open collector output
  • Current mode architecture
  • Embedded compensation network

ST1S14PHR Products

ST1S14PHR Pinout
(Picture: Pinout)

ST1S14PHR Block Diagram
(Picture: Diagram)

Technical Parameters

  • Switching Frequency
  • 850 kHz
  • Output Voltage
  • 0.4 V
  • Output Current
  • 3 A
  • Mounting Style
  • Package / Case
  • HSOP-8
  • Packaging
  • Reel

ST1S14PHR Related Products

Ratings and Reviews (1)

  • 5 / 5
  • 5 Stars 100%
  • 4 Stars 0%
  • 3 Stars 0%
  • 2 Stars 0%
  • 1 Stars 0%
  • **icto***

    etwas mußte ich warten aber sonst alles ok

  • Ratings
  • Please rate the product!
Shipping More
Estimated Delivery Time: Dec 13 - Dec 18 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 ST1S14PHR 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 ST1S14PHR devices; we pay more attention to the channels and quality of ST1S14PHR products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of ST1S14PHR chips? Including ST original factory information, DC/DC Switching Regulators application, ST1S14PHR pictures?
You can use Jotrin's intelligent search engine, or filter by Power Management ; DC-DC Switching Converters ; Buck Regulators category, or find it through STMicroelectronics, Inc Information page.
Q: Are the ST's ST1S14PHR 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 ST1S14PHR, 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 ST1S14PHR?
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 ST1S14PHR we delivered, we will accept the replacement or return of the ST1S14PHR 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 ST1S14PHR.
(3)The ST1S14PHR 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 ST1S14PHR datasheet pdf, ST1S14 pin diagram?
Need any After-Sales service, please feel free contact us:

STMicroelectronics, Inc

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....
  • ST1L05BPUR
    ST1L05BPUR Very low quiescent BiCMOS voltage regulator,Switching Converters, Regu...
  • ST1L05CPU33R
    ST1L05CPU33R ST1L05 Series 1.3 A 3.3 V Fixed Output LDO BICMOS Voltage Regulator ...
  • ST1S03PUR
    ST1S03PUR 1.5 A, 1.5 MHz adjustable, step-down switching regulator,Switching Con...
  • ST1S06A
    ST1S06A Synchronous rectification with inhibit, 1.5 A, 1.5 MHz fixed or adjust...
  • ST1S06PUR
    ST1S06PUR Synchronous rectification with inhibit, 1.5A, 1.5 MHz fixed or adjusta...
  • ST1S09IPUR
    ST1S09IPUR 2 A, 1.5 MHz PWM step-down switching regulator with synchronous rectif...

Certificates & Honor

Certificates & Honor