Step-Up/Step-Down Voltage Regulator S10V4F5 - 5V 0,4A - Pololu 2121

Converter step-up/step-down output voltage of 5V. A maximum current of 400 mA. The Power Of 2.5 To 18 V.

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Description of product: Pololu S10V4F5 Converter, step-up/step-down 5V 0.4 A

Converter step-up/step-down output voltage of 5V. A maximum current of 400 mA. The Power Of 2.5 To 18 V.


The main characteristics of the Converter S10V4F5

  1. The output voltage can be above, below or equal to the supply voltage (in the range of 2.5 V to 18 V).

  2. Continuous output current is 400 mA depends on input voltage (see details in the further part of the description).

  3. The output voltage is 5 Volts with an accuracy of 4 %.

  4. Built-in protection system against too high temperatures.

  5. Small size: 14.6 x 10.16 x 2.54 mm.


Large input voltage range and stable output voltage of 5 Volts with an accuracy of 4% ensures that the module is very well established as a stabilizer in systems powered by batteries. For example, when the required voltage of 5 Volts in the circuit with power for one purpose Li-pol (3.7 V) during the entire work cycle of the battery.



In a typical application, the system can provide current current up to 400 mA (details in the further part of the description). The regulator is equipped with a temperature protection, but not protection against short-circuit and reverse connection of the supply.


The module has four output:

  • VIN - input voltage range 2.5 V - 18 V. for the lower module are not included above, may damage the system.
  • GND - the ground.
  • VOUT - output voltage of 5 V.
  • SHDN - shutdown system - input low means that the system goes into a low power state. Conclusion it is pulled up to VIN through a resistor 10 kΩ, which is enabled by default.


Connectors respectively signed on the Board. Terminal pitch is 2.54 mm (popular goldpin connectors). The module can be mounted on the contact plate, to connect with wires or solder in a special printed circuit Board.


Efficiency is defined as the ratio input power to output power (Pout/Pin). This parameter is of particular importance when running on battery power when it is important that the system worked as long as possible on a single charge. The efficiency of the Converter depends on the strength of the current flow and the input voltage (chart below). The average is at 70-80%, which allows to use almost the maximum energy from the battery.

Przetwornica S10V4F5 - sprawność układu w zależności od pobieranego prądu


Przetwornica S10V4F5 - sprawność układu w zależności od napięcia wejściowego

Output current

The maximum current that can provide a system depends in particular on: the input voltage and operating temperature. The dependence of the maximum current from the input voltage shown in the figure below. In the case when the operating temperature reaches a too high value, the module automatically turns off the power.

Przetwornica S10V4F5 - prąd wyjściowy

Jumping voltages (pins)

In electronic circuits, the current run can lead to the emergence of so-called pins, that is, sharp voltage spike to a value above a certain level. If the amplitude of the pin exceeds the permissible value of the controller, it can fail. Therefore, if the system will be powered by a voltage higher than 11V, or the load will have high inductance, we highly recommend you wlutowanie capacitor value of 33uF/25V or higher, as close as possible to the system between VIN and GND.

Specification of the Converter S10V4F5

  • Input voltage: 2.5 V to 18 V
  • Output voltage: 5 V
  • Operating frequency: 1.5 MHz
  • Output current max: 400 mA
  • The current consumption of the system (quiescent current): 2
  • Small size: 14.6 x 10.16 x 2.54 mm
  • Weight (without connectors): 0.6 g

  • Length 15 mm
  • Width 10 mm
  • Height 3 mm
  • Voltage to 2.5 V
  • Voltage from 18.0 V
  • Voltage output from 5.0 V
  • Output voltage to 5.0 V
  • Nominal output voltage 5.0 V
  • Current 0.4 A
  • Stabilizer - Type2 switching
  • Stabilizer - Type step-up/down


Posting the payment for the order on our account on a business day up to 13:00 means sending the goods on the same day!


The time of payment depends on the hours of ELIXIR session of the sender's bank and the recipient of the transfer (more information on this subject, for example on the website


The table presents available forms of delivery in Poland


Carrier and

Bank wire

by cash


Poczta Polska

terms of service

9,90 PLN17,90 PLN1-3 days

Kurier GLS

terms of service

14,90 PLN22,90 PLN

1-2 days

Paczkomaty 24/7 

terms of service

12,90 PLN-1-3 days

If the amount to pay for products exceeds 500 PLN
Delivery is for free!


  • Free delivery of orders over 500 PLN does not apply to parcels addressed outside of Poland.
  • Free delivery does not apply when changing orders.
  • The delivery period is counted in working days from the date of dispatch of the order.