5V boost converter with true shutdown

Name: 5V boost converter with true shutdown
SKU: 25782
Price: 7.00 USD
Availability: InStock
Rating: 4.50 (1 reviews)

(1 Review)

A handy little board that provides 5V with a shutdown current of less than 1uA

Designed by Embedded Loop in United Kingdom

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A handy little board that provides 5V with a shutdown current of less than 1uA

What is it? A tiny (17x12mm) step-up converter board with true shutdown, providing 5V with a current limit of 800mA, great for battery-powered projects. Features: Input voltage range: 2.4-4.5V Outpu…

What is it?

A tiny (17x12mm) step-up converter board with true shutdown, providing 5V with a current limit of 800mA, great for battery-powered projects.

Features:

Input voltage range: 2.4-4.5V
Output voltage: 5V
Shutdown current: less than 1uA
Short-circuit protection
Output thermal protection

Why did you make it?

I'm working on an open-source solar-powered air quality monitor and needed a 5V supply for the PMS7003 air quality sensor. I also needed to be able to switch the sensor off, as it draws a significant amount of current (around 60mA) for a battery-powered project.

What makes it special?

Most boost converters only switch off the boost function itself when they are disabled, still allowing current to flow through to the output via the inductor and the diode. This board uses the FP6277, a synchronous boost converter that completely switches off the power at the output when the enable pin is pulled to ground. This is great for battery-powered projects that uses sensors that need to be switched off when not in use.

With supply chain shortages making it difficult to get hold of even simple components like DC-DC converters, I wanted to design a breakout board around a chip that's easy to source from suppliers like LCSC. At the time of writing (2021-01-07) there are still more than 28 thousand FP6277 chips in stock at LCSC.

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Review Breakdown

Average Ratings

Product: (5.00)

Documentation: (3.00)

Shipping: (5.00)

Communication: (5.00)

Steven | Dec. 7, 2023

Perfect solution

After fighting with Pololu regulators for about a year - which I could never keep in shutdown mode while my microcontroller was well asleep, I finally came across this product. Turns out to be the perfect solution to power my SPS30 from battery, and the multimeter shows 0.0 uA in shutdown mode.. woohoo!
As of writing, the documentation link gives an error which is a bit sad, but there's not much to do wrong so not a big deal.
From a Dutch person to a South African: petje af!