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Step-Down Voltage Regulator ST1S10PHR - 0,8V - 15,3V 3A

Index: UCC-00359 EAN: 5904422329457

DC-DC step-down converter. Power supply: 2,5 V-18 V. Maximum current 3 A. Housing SO8. Output voltage: 0,8 V - 15,3 V.

Step-Down Voltage Regulator ST1S10PHR - 0,8V - 15,3V 3A
€1.51
€1.23 tax excl.
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Discontinued product
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Manufacturer: STMicroelectronics

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The product has been discontinued. Check other products in category.

Product description: Step-down converter - ST1S10PHR: 0,8 V -15,3 V 3 A

DC-DC step-down converter. Power supply: 2,5V-18V. Maximum current 3 A. Housing SO8. Output voltage: 0,8 V - 15,3 V.

Switching converters have much higher efficiency than linear regulators. However, they require more additional external components. Incorrectly designed can be a source of interference.

Przetwornica step-down - ST1S10PHR : 0,8V -15,3V 3A

ST1S10PHR step-down converter: 0.8 V - 15.3 V 3 A.


The diagram showing the dependence of the system efficiency on the current intensity.

Parameters of the ST1S10PHR converter

  • Supply voltages: 2.5 V to 18 V
  • Output voltage: 0.8 V to 15.3 V
  • Maximum output current: 3 A
  • Efficiency level: 90%
  • Frequency: from 400 kHz to 1.2 MHz

The selection method of coils and capacitors is described in detail in the documentation. The resistors are calculated using the formula:

R1 = R2 x (Vout - Vfb) / Vfb

Vout - output voltage we want to achieve

Vfb = 0,8 V

R2 - typical recommended value of 20 kOm

For Vout = 5V, the value of R1 will be 105 kOm.

To calculate the value of external components you can use the calculator available at www.masterlab.com.pl.

Schematic showing the use of the circuit as a 5 V stabilizer.

Sugerowny projekt PCB.

Suggested PCB design.

PCB design

When designing the PCB, pay special attention to the ground supply to the circuit. The tracks should be thick. Capacitors as close as possible to the pins of the converter. In the documentation the manufacturer suggests how to place the components.

Current 4 A
Stabilizer - Type2 switching
Stabilizer - Type step-down

Same-day shipping

  • Crediting the payment for the order on our account on a business day before 10:00 AM means sending the goods on the same day.
  • All packages are being delivered by GLS Group courier and covered with insurance up to 1200 EUR.
  • You will receive a link to track your package and monitor the progress of delivery as soon as it is shipped.

Terms of delivery 

GLS - zone 1

Austria, Belgium, Croatia, The Czech Republic, Denmark, Germany, Netherlands, Poland, Slovakia 

  • Delivery time: 2-4 days
  • Delivery cost: from 4.18 EUR
  • Insurance: 1200 EUR
GLS - zone 2

Bulgaria, Estonia, France, Hungary, Italy, Latvia, Lithuania, Luxembourg, Portugal, Romania, San Marino, Slovenia

  • Delivery time: 2-5 days
  • Delivery cost: from 5.35 EUR
  • Insurance: 1200 EUR
GLS - zone 3

Finland, Greece, Ireland, Spain, Sweden 

  • Delivery time: 2-7 days
  • Delivery cost: from 7.67 EUR
  • Insurance: 1200 EUR

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