TPS62840 is a high-efficiency buck converter with ultra-low operating quiescent current of 60 nA, 20nA shutdown and 750mA max output currentDesigned by MakerTronika Labs in Azerbaijan
What is it? olmBoard is a small & breadboard-friendly buck converter module with TPS62840 step-down converter at its heart and supporting circuitry. TPS62840 is an ultra-low-power switching regula...Read More…
olmBoard is a small & breadboard-friendly buck converter module with TPS62840 step-down converter at its heart and supporting circuitry.
TPS62840 is an ultra-low-power switching regulator from Texas Instruments. It offers a low operating quiescent current (IQ) at 60 nA, and delivers very high light-load efficiency of 80% at 1-µA load.
The TPS62840 IC provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S alkaline, 1S to 2S Li-MnO2, and 1S Li-Ion/Li-Po/Li-SoCl2. JST-PH connector has been added for easy LiPo battery connections.
Initial sweep load test results w/ 0.1A and 10 sec increments using EBD-USB load tester. The module works well up to 1A loads (short term), recommended max output current is 750mA. Voltage drop in the graph is due to the USB cable drop, actual voltage is stable around 3.3V up to 1A loads.
I needed an ULP buck converter module for my Penguino Feather board and this IC sounded very promising. I decided to give it a try and build a small module to test it out.
This IC offers some unique features and it's one of the lowest operating current buck converters I've ever seen. Additinally it has a selectable output voltages (default 3.3V) with solder-jumper selectable ranges.
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