[Pervil]

Hello, I am looking for a miniature step-down (buck) converter with maximum dimensions of 5mm (height) x 15mm (width) x 30mm (depth). The board needs to step down the voltage from a 3.7V 400mAh lithium battery to 2V 400mAh, with as little power loss as possible. I have searched online, but the options I found (listed below) do not meet my requirements—either the input voltage range is wrong, or the output voltage range is, or both. Could someone please help me find a board that would allow me to achieve this goal with little to no soldering required?

I would appreciate relevant and helpful responses.


UNSUITABLE options:

MP1584EN Buck Module:

Input: 4.5V–28V
Output: 0.8V–20V (adjustable)


LM2596 DC-DC Buck Module:

Input voltage: 4V–35V
Output voltage: 1.23V–30V


Mini360:

Input voltage: DC 4.75V–23V
Output voltage: DC 1.0V–17V


MT3608:

Input voltage (IN): 2V to 24V DC
Output voltage (OUT): 5V to 28V DC