Constant Current Adjustable Module，Aluminum Miter T-track PWM Control Board DC 3.3V 3.7V 5V LED Driver 30-1500mA for LED 18650 Li-ion

Constant Current Adjustable Module，Aluminum Miter T-track PWM Control Board DC 3.3V 3.7V 5V LED Driver 30-1500mA for LED 18650 Li-ion

$ 8.79

Score By Feature

Based on 5 ratings

Giftable

9.51

Value for money

9.52

Customer service

9.12

Delivery

9.44

OveReview Final Score

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Product Description

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This is a current regulation integrated circuit that works with a 2.25V input voltage. The constant output current can be set to 1 when the voltage is between 8 and 6 volts. With an external resistor, the current is increased to 5A.

Constant Current Adjustable Module is made up of high-precision reference voltage, amplifier, current mirror, and other components. The on-chip power transistor and current sense block reduce the number of external components, making this product ideal for LED drivers.

The input voltage is greater than two when the CE pin is high. It works normally to deliver constant current from the LED pin at 8V, which is higher than the LED forward voltage plus the required voltage drop.

Instead of using the temperature protection function, the PWM Control Board uses temperature regulation, which allows the LED to remain on indefinitely in the event of a high ambient temperature or a high voltage drop. The internal temperature regulation block reduces the LED current when the junction temperature reaches around 135 °C, preventing the junction temperature from rising any further.

Adjustable Buck Converter with e chip enable function, which can shut down the entire chip to keep current consumption to less than 1uA. The overcurrent protection block is used. When the LED current reaches a value of one, it is considered to be When the LED current reaches 9A (typical), the over current protection block kicks in to keep it from getting any higher.

Questions & Answers

Is it possible to use this to power 3 volt LEDs?

Yes, you can, based on the specifications. Although an LED is a current device rather than a voltage device, it must have a minimum turn-on time. The LED must be turned on by applying voltage, but once turned on, the intensity is determined by the current. So, for this device, make sure you know what your 3v LED's maximum current rating is and set the current to be less than that. The closer you set the current to the maximum allowable, the shorter the lifetime of your LED will be. If your LED has a maximum current rating of 1A, set it to 750mA or 500mA to get the most life out of it. Before you turn this thing on, make sure your meter is set to measure current and that the potentiometer counter clock is set to minimum. Connect your amp meter to your LED and increase the current by turning the potentiometer clockwise. As the current is increased, the LED should brighten, and once you've reached the desired current, remove the meter and hoop up the LED normally (Anode to LED pin, Cathode to Gnd). I hope this has been of assistance.

Is this board available in a version that opens the circuit on the positive side rather than the negative side?

I'm delighted to be of assistance. No, this is the only version that opens the circuit from the negative side.

Is it possible to power this unit with 5V DC and use a momentary switch to turn it on and off?

Yes! The 5V input works (as described), and all you have to do now is connect CE to the momentary switch. In that case, the momentary switch can be either one that is normally connected to ground and then connects to 5V when pressed, or a pull-down switch. Connect the monetary switch to the 5V by connecting the resistor to ground.

As a result, I've received a score of three. Battery with a capacity of 7 volts and 500 milliamperes. Is it possible to charge the battery and go from 3 to 4? 7v to 5. 0v?

It's not going to help you charge your phone.

Selected User Reviews For Constant Current Adjustable Module，Aluminum Miter T-track PWM Control Board DC 3.3V 3.7V 5V LED Driver 30-1500mA for LED 18650 Li-ion

This is a fascinating board; why do you require it? The brightness of an LED is determined by the amount of current flowing through it

4/5

If you're working with a group of leds, you'll want them to all be the same brightness. This small board provides constant current to ensure that all of your LEDs are the same brightness. I've been playing around with this board, and it does exactly what it says it will: it keeps the current where you set it. br>br>Be aware that there are no instructions, but it is extremely simple to figure out. In just a few minutes, I had my led string up and running. All of them were connected in series. br>br>The only drawback is that the current adjustment pot is small and fragile; I used an eyeglass screwdriver, but you should use something more durable. br>br>I strongly advise you to do so.

King Carter

| Apr 07, 2021

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