https://www.electrodragon.com/product/dc-buck-step-power-module-3a24v-mp2315/

the USB version - OPM1106-dat

https://www.electrodragon.com/product/mp2315-mini-dc-step-power-module-1224v-5v3a/

Pins

  • VO+: Output
  • GND: Common Ground
  • IN+ Input
  • EN: Enable

Tuning

  • The default output is adjustable.
  • If you need to fix the output voltage, use a knife to cut off the connection in the red circle, and then use solder to connect the pad at the voltage position you need·

Features

  • Use brand new original chips imported from the United States, definitely not domestic chips, disassembled chips.
  • The output current should not be greater than 3A, 2.1A for long-term operation, and the margin is sufficient.
  • Using a new scheme design
    • the circuit design does not require electrolytic capacitors and tantalum capacitors (electrolytic capacitors have a short life, and tantalum capacitors have the risk of explosion).
    • 2 large-size solid ceramic capacitors (MCC) used in high-end circuits are used.
  • The new solution uses synchronous rectification, and the circuit conversion efficiency is very high.
    • When converting 6.5V to 5V 0.7A, the efficiency is as high as 97.5%.
    • When converting 12v to 5V IA, it also reaches 94%.
    • Unlike some peers, the efficiency is only 60.70. %. (The efficiency test removes the voltage drop of the input reverse protection diode and fuse).
  • Use high-current shielded inductor and ultra-low internal resistance to improve conversion efficiency. Reduce calorific value.
  • Small size, 20 (length) * 11 (width) * 5 (height) mm,
  • Low quiescent current, quiescent current 0.85 mA. No need to add a switch when connecting to the car battery, it can be connected to the cigarette lighter cord or ACC power cord.
  • The output integrates adjustable and fixed voltages. The fixed output does not need to be customized.
    • It can be spot welded directly on the board.
    • It is very suitable for voltage and can be adjusted with a potentiometer.
    • It is very versatile.
  • Integrated enable port, the default is the working mode, low level is turned off, which brings convenience to control
  • Can be used to replace 78 series linear regulators, such as 7805, 7812, etc.

Specs

  • Module properties: non-isolated buck module (BUCK) synchronous rectification
  • Input voltage: DC 4.5-24V
  • Output voltage: integrated adjustable and fixed output
    • fixed output voltage can be selected on the back
    • Adjustable range (0.8.17V)
    • Fixed voltage (1.8V2.5V3.3V5V9V12v)
  • Output current: no more than 3A
    • (please pay attention to heat dissipation when fully loaded)
    • the actual test input is 12v
  • No special heat dissipation is required when the output is within 1.5A.

  • Conversion efficiency: up to 97.5% (6.5 to 5V0·7A)

  • Switching frequency: 500KHz
  • Output ripple: about 20mV (12v to 5V3A) 20M bandwidth
  • Working temperature: industrial grade G40℃ to +85℃) (the higher the ambient temperature, the smaller the output power)
Spec  
Output overvoltage protection none
Full load temperature rise 40℃
Quiescent current 0·85 mA
Load regulation ±1%
Voltage regulation rate ±0.5%
Dynamic response speed 5% 200uS
Output short circuit protection Yes, please do not short circuit for a long time
Input reverse connection protection None, input reverse connection protection diode
Enable control yes, note-1
Soldering method Soldering
Input method Soldering
Output method Soldering /pin header
Soldering hole spacing 2.54 mm
  • note-1: high level works, low level stops working, high level is 2.5V, low level is about OV. By default, it has an internal pull-up to the positive input.

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