SolarTrap
Computer
- May 5, 2014
- 89
Hello,
I created a project that is using a 328P to drive 24 LEDs (WS2812) which can draw 2A.
I used a guy to make a PCB layout (attached) and ordered an assembled version but something with the boost circuit is not working right. He used a LTC3872 to boost 3.7 to 5 but the circuit runs the battery down to 2.6 and then I get execution errors on the 328P. The LEDs are a very dynamic load so I think the LTC3872 was a bad choice.
Is there a combined chip that boost to 5V and disconnects at 2.75 and only reconnects if the voltage is back to 3.7 (or some other threshold)?
I looked around but the closest designs I found was basically a 5V battery bank controller.
Any suggestions?
Markus
I created a project that is using a 328P to drive 24 LEDs (WS2812) which can draw 2A.
I used a guy to make a PCB layout (attached) and ordered an assembled version but something with the boost circuit is not working right. He used a LTC3872 to boost 3.7 to 5 but the circuit runs the battery down to 2.6 and then I get execution errors on the 328P. The LEDs are a very dynamic load so I think the LTC3872 was a bad choice.
Is there a combined chip that boost to 5V and disconnects at 2.75 and only reconnects if the voltage is back to 3.7 (or some other threshold)?
I looked around but the closest designs I found was basically a 5V battery bank controller.
Any suggestions?
Markus