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1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR
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ST1S03 Product Details
The ST1S03 is a step-down DC-DC converter optimized for powering a low voltage digital core in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause a high heating of the application environment. It provides up to 1.5 A over an input voltage range of 3 V to 16 V. A high switching frequency (1.5 MHz) allows the use of tiny surface-mount components: as well as the resistor divider to set the output voltage value, only an inductor, a Schottky diode and two capacitors are required. Besides, a low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR SMD ceramic capacitors. The device is thermal protected and current limited to prevent damages due to an accidental short-circuit. The ST1S03 device is available in a DFN6D package.
- Step-down current mode PWM (1.5 MHz) DC-DC converter
- 2% DC output voltage tolerance
- Internal soft-start for STARTUP current limitation and power on delay of 50 - 100 μs
- Typical efficiency: > 70% over all operating conditions
- 1.5 A output current capability
- Not switching quiescent current: max 2.5 mA over temperature range
- Switch VDS: max. 350 mV at ISW= 750 mA
- Uses tiny capacitors and inductors
- Available in DFN6D 3 x 3 mm package with exposed pad
- Input Voltage (V) min
- Input Voltage (V) max
- Regulated Output Voltage (V) min
- Regulated Output Voltage (V) max
- Output Current Max (A) nom
- Synchronous rectification
- Quiescent current (mA) typ
- Regulator Switching frequency (kHz) typ
- Inhibit Pin
- Soft start
- Other Features
- Oscillator Switching frequency (kHz) (Internal) min
- Oscillator Switching frequency (kHz) (Internal) max
- Oscillator Switching frequency (kHz) (External) min
- Oscillator Switching frequency (kHz) (External) max
- Junction Temperature (°C) min
ST1S03 Related Products
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Estimated Delivery Time: Oct 02 - Oct 07 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
- REGISTERED AIR MAIL
- $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
- Wire Transfer
- charge US$30.00 banking fee.
- charge 4.0% service fee.
- Credit Card
- charge 3.5% service fee.
- Western Union
- charge US$0.00 banking fee.
- Money Gram
- 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.
Minimum order quantity starts from 1pcs.
Lowest international shipping fee starts from US$2.00.
90 days quality guarantee for all products.
Step2: Vacuum Packaging
Step3: Anti-Static Bag
Step4: Individual Packaging
Step5: Packaging Boxes
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.
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 ST1S03 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 ST1S03 devices; we pay more attention to the channels and quality of ST1S03 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
- Q: How to find the detailed information of ST1S03 chips? Including ST original factory information, Power Management ; DC-DC Switching Converters ; Buck Regulators application, ST1S03 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 ST1S03 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 ST1S03, 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 ST1S03?
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 ST1S03 we delivered, we will accept the replacement or return of the ST1S03 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 ST1S03.
(3)The ST1S03 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 ST1S03 datasheet pdf, ST1S03 pin diagram?
- Need any After-Sales service, please feel free contact us: email@example.com
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