Matek UBEC DUO, 4A/5~12V & 4A/5V


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SKU: U4A2P Category: Tags: ,

Matek Systems


4A/5-12V & 4A/5V



This device is a high-efficiency, switch-mode buck regulator with two output channels, works with 7-26Vdc Input. One output channel is capable of supplying 0-4A/5V for your RX or Flight Controller.This device also features another output channelwith 4A & 5-12V(adjustable) , inbuilt power switch that is operated by a spare Aux Channel, this feature can be used to power and switch on/off a wide variety of electric equipments,such as Multi-rotors Gimbals, Video Transmitters, FPV camera systems, HV Servos,navigation/landing lights, bomb drop, etc.



  • Switch-mode buck regulator
  • Two output channels,
  • Build-in Aux control (On/Off) function
  • Low input voltage alarm & threshold setting
  • Output Short-circuit protection



  • Input voltage range: 7-26V (2-6S LiPo battery)
  • Out-1: 5V,6V, 7.2V, 12V (Adjustable), 0-4A, Max.6A, inbuilt Aux control switch.
  • Out-2: 5V,0-4A,Max.6A
  • Efficiency: up to 95%
  • Standby current: 10mA
  • LiPo voltage alarm setting: 4V,3.5V, 3.6V, 3.7V/Cell & OFF
  • Input cable 20cm (Silicone 20AWG), Output cable 30cm (2pairs,Silicone 22AWG)
  • Size & weight: 58x36x8mm, 32g



O   It Is a step-down regulator, the input should be 4cells L/Po at least,  to ensure stable output 1211.

& Pay attention to the input polarity . Reversed polarity will damage the UBEC.

  1. Adjust the Out-1 voltage
    • Pis disconnect any attached equipments on OUT-1 before setting the voltage
    • Hold the KEY 3 seconds to enter the setting of the Out-1
  • Then press KEY to choose the voltage between 5V, 6V, 2V, 12Y (Blue LED) .
  • The value will be saved & exit if no action within 5
  1. Aux control function
    • No Aux connection, OUT-1 Default is ON
    • Connect the Aux pins to a spare Aux channel on the receiver (Two position switch ).
    • Move the toggle switch to one side or another
  • Dut-1 ON, with blue LED light ON & “..BeBe”

e   Out-1 OFF,with blue LED light OFF & “BeBeBeBe”


  1. Input voltage monitor, Low voltage alarm & Ala rm values setting

The USEC can monitor 2-65 LiPo voltage status & notify you once the cells reach the defined voltage.


  • If the Input voltage is in the range of following, The UBEC will detect the cell numbers automatically when the LiPo is conn

7.4-8.6V:2cells LiPo    11.1-12.9Y: 3cells LiPo

14.8-17.2Y: 4cells LiPo   18.5-21.5Y: 5cells LiPo

22.2-25.BY: 6cells LiPo

The USEC will alarm “Be” & the voltage threshold red LED will be shown. During the using of LiPo, USEC will detect the voltage atways.

  • If the input voltage is below “threshold cells”, the alarm will be triggered with “Be..Be..Be..Be...
  • Input voltage rise again, the alarm will be suspended .


  • If the input voltage is out of the aforesaid The USEC will alarm “Be..Be..Be” & 4 red LEDs light. Pis check if the battery total voltage is below 3.?v·cells


  • The alarm threshold can be customized between 4V, 3.5V, 3.6V, 3.7V & OFF
    • Press the KEY to set the alarm threshold. All Red LEDs go out, This function is OFF.
    • The value will be saved & exit if no action within 10
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