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
€1.54 tax excl.
Discontinued product
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Manufacturer: STMicroelectronics


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
Package width 0 cm
Package weight 0.001 kg

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