2 PCS DC-DC MT3608 Step-up Power Supply Module Adjustable Boost Converter Input 2V-24V to 5V-28V 2A

Product Information

The MT3608 is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small, low power applications. The MT3608 switches at 1.2MHz and allows the use of tiny, low cost capacitors and inductors 2mm or less in height. Internal soft-start results in small inrush current and extends battery life. Higher inductance will reduce the peak output ripple current resulting in lower output voltage ripple for given output filter capacitor. Power Bank Becoming Everyday Need as Smartphone, Headphones Becoming Power Hungry. Here is Our Power Bank Buying & Maintaining Guide.

This is a boost converter meaning that it will take lower voltage and convert it into higher voltage. To adjust the voltage we have to do a couple of steps. The circuit above depicts how the connections are made for the operation of the MT3608 step-up module. Boost converters are a great way to easily increase a given voltage, but that boost comes at the cost of less output current compared to input current. Since this is a boost converter the output voltage has to be higher than the supplied input voltage. This module has a multiturn trimpot (potentiometer) that you can use to adjust the output voltage. Since the trimpot has 25 turns of adjustment you can easily adjust the output of the module to exactly the voltage you need.

Here is an example that includes everything mentioned above. We will summarize everything with the wiring steps:

Because you have moved the current resistor _before_ the voltage regulation network, once the regulator is turned on, the output voltage will be exactly where you want it. Explicitly said: the current regulation network will see a lowered voltage because of your added resistor and will increase the output to compensate for the voltage drop caused by it. That’s its job. The three things that matter the most are the series resistance, the core loss, and the saturation current. If you can get your hands on a datasheet for that inductor, then go looking for inductors available more locally to you (i.e. TDK, MuRata, etc.)

The resistor needs to drop at least 0.6V in the “converter-off” situation. So, if, like in the example, you have 4V input and 15V out, and the load is resistive like the lamp, then you’ll be dropping about 2.3V across the resistor when the thing is on. I am wondering if the circuit arrangement used in Fig.17 of the Texas TPS61040 datasheet would be a more efficient method of no-load shutdown when applied to the MT3608. We work closely with electronics manufacturing companies & individuals to understand & solve the challenges Although LR44 and 357 batteries look the same shape, they perform differently. The LR44 is an Alkaline Zinc Manganese button cell battery, whereas, the 357 is a silver oxide button cell battery. Today, this article is going to explain what differences lie in and whether they can interchangeable. Read More

So i just went to Mouser UK (International Company & this is being used just as an example of how to search for one's own self, use whatever you feel comfy with) So search for the exact or close-enough characteristics of the inductor we need for these projects and I've found 14 results in the list after narrowing it down but only using what info is specifically in that Datasheet snippet above, here's 2 pictures from screenshots from me own desktop to further illustrate how to better search for exactly what you need and asked for, or be in the ball-park for better choice options than without these sort of searching: Here we would like to introduce another component: the Fuse. In this specific case our converter needs protection from 2 Amps. So we will take a 2 Amp fuse and wire it according to the image below. This will provide the necessary protection for our IC. Because I’m super dilligent, the video link at the top of the article starts at t=101 seconds, skipping the preroll ad. I meassured the output voltage and it is stable when the RPi is off as well as when it is on (4.9v ~ 5.1v). The boot up sequence tipically consumes about 150-300mA on a Raspberry Pi B+ I use to prototype.BUT the most impressive is YOUR 3D RENDERING of this module - PLEASE Please please could i kindly beg you; Trimry bývají občas z výroby nastavené úplně mimo oblast, kde je regulováno výstupní napětí. Pokud nefunguje regulace výstupního napětí, zkuste otočit trimrem 25x na jednu stranu, případně poté 50x na druhou. Set the multimeter to read the voltage and connect the output of the converter to it. Now you can already see the voltage on the output. In theory, it should provide 5v (output of the MT3608) when powered either from USB wall charger or from 18650 battery (through the TP4056). The Mosfet will do the switching between mains and battery.

Note that the maximum input voltage should not be greater than the desired output voltage (as this is a step-up converter not a step down converter). Nice touch, a limitation: as mentioned, it introduces a voltage drop of 0.65 V (or so). This voltage drop is current dependent, so you can’t really regulate this away easily using the variable resistor. The amount of busted modules ive got over the years ive started to buy the SMD individual parts so i can swap them out as the most important part of the module is the PCB itself. And much harder to make for folks just getting into electronics and electrical engineering :) MT3608 module can be used in application where voltage requirements are under 28V and current requirements are under 2A. Therefore this module can be used mostly in portable equipments like power banks, portable power supplies etc. Moreover due to its low cost it can also be used in educational projects. MANY other softwares out there for making one's own PCB's (which i would NEVER charge anyone to help make their own PCB's, after all, its just the board designs of simple modules so if one ever wants a hand in doing so, lemmi know !!)A boost converter(DC-DC step-up converter) is used to step up a lower voltage to a higher voltage level with quite a simple circuitry. It is a type of switch-mode power supply as it uses a switching device to regulate the voltage. In our case, the switching module is the MT3608 IC which has a high switching frequency of 1.2MHz. The higher switching frequency also opens up the possibilities to use smaller indicators making the module compact and also providing high power output simultaneously. Another thing to mention when working with power modules like converters is that they will burn out if the current goes too high. I believe that you have already understood that from the step above, but how to protect the IC from the high current? I am planning to use MT3608 schematic for my project to boost the voltage from 3.7V to 5V. I am planning on making a customized PCB with all the requirements that are needed for the project. Pin configuration of the Step up module is given in the table below. The module has 4 pins, 2 of which are for voltage input and 2 are for regulated output voltage. The module also consists of a potentiometer which can be used to adjust the output voltage levels.