published: February 23, 2018 — last modified: October 23, 2025
For a current project I need a step-up converter to get 5 volts from 2.5V-5.5V input. The output of this converter is used to power sensors which drive motors and small heat elements from this source. The average consumed current is 160mA with a peek at 320mA.
In the photo you can see the latest Boldport project with a test setup for the XC9142B50DMR-G from Torex Semiconductor. I made the mistake and just relied on the specifications stated on the website from Mouser:
This looks really good: 500mA output current… So I did a quick test. Obviously the magic smoke in the photo is a composition, but this is what actually happened somewhere at a constant ~250mA load with 5V input.
Also the chip I selected does not disconnect the load on shutdown, which is a requirement for me. This was my mistake, read “D” but at the wrong position in the product identifier. :-D
If you have any suggestion for a replacement, please let me know!
This are my requirements for the part:
If you have questions, miss some information or just have any feedback, feel free to add a comment below.
Have fun!
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