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5V DC/DC Regulator

Product Code:MMP-1186

Ex.Tax £5.00

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5V DC/DC Regulator
5V DC/DC Regulator
5V DC/DC Regulator
Questions2 Answers2 | Expand All
this or UBEC?
Hi, I'm making a submersible ROV with a group of pupils, we are using a LIPO 18v battery pack and need to drop to a stable voltage for a PiZero, I have just bought an UBEC voltage reg but read a review which scared me off about compatability with Zero, would this provide a more stable supply?
Meirion Owen
  • UBECs are a "noisy" way of stepping down voltages. They can have quite high peek to peek voltages (which average out to 5V) but these peeks can damage things if not smoothed out.

    The full size Pis have voltage regulators on the micro-USB power input which smooths out this peek (not on the GPIO though!) but the Pi Zero's don't.

    The issue with a DC/DC voltage regulator is that the "extra voltage" is dispersed as heat. So they can get a little warm.

    But to answer your question... this :) 

    ModMyPi LTD
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Pin out required
There's no instructions with this. What's the input, output and ground pins?
  • With the 3 pins facing towards you,and at the bottom of the PCB, the pins are as follow:

    POWER IN ----- GROUND (both in and out) ---- POWER OUT (5v)

    ModMyPi LTD
    Was this answer helpful? 0
Showing 1 to 2 of 2 (1 pages)

This is an OKI-78SR-5/1.5-W36H-C DC/DC regulator! They're highly efficient ~90%, and provide 5V @ 1.5A (7.5W) from a 7V to 36V input.

Ideal for use with BattBorg, ZeroBorgThunderBorg or any projects in need of a good regulator. 

Unlike noisy UBECs, this regulator provides < 75 mV peak-to-peak ripple.


  • 7 - 36V Input
  • 5V @ 1.5A Output (7.5W)
  • < 75 mV peak-to-peak ripple
  • Vertical SIP or horizontal mount, small footprint package
  • “No heat sink” direct replacement for 3-terminal 78xx-series linear regulators
  • High efficiency (~90%) with no external components
  • Short circuit protection
  • Outstanding thermal derating performance
  • UL/EN/IEC 60950-1, 2nd Edition safety approvals 

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