Hi - I am looking to build a strobe for my Mavic Pro using a Cree XP-E2 LED (Cree XP-E2). I have got the LiPo charge / LVCO circuit figured out using a the standard TP4056 / DW01 / FS8205A combo. I am going to sequence the strobe using a simple ATTiny45 / NPN MOSFET. I am not sure if a simple current limiting resistor will suffice or if I need to look at a constant current circuit to drive the LED.
LED will double flash 50 ms on – 60 ms off – 50 ms on.
I am going to run a 1S / single cell 3.7V 70mAh LiPo such as this one - https://www.aliexpress.com/item/32509826953.html
I will probably drive the LED at 700mA as per the datasheet:
https://www.cree.com/led-components/media/documents/XLampXPE2.pdf
If I should run a CC circuit, Is there a specific IC I should be looking at?
I have found the CN5711 - I could simply pulse the CE pic and do away with the MOSFET.
Operating Voltage Range: 2.8V to 6V
On-chip Power MOSFET
Low Dropout Voltage: 0.37V @ 1.5A
LED Current up to 1.5A
Thanks!
LED will double flash 50 ms on – 60 ms off – 50 ms on.
I am going to run a 1S / single cell 3.7V 70mAh LiPo such as this one - https://www.aliexpress.com/item/32509826953.html
I will probably drive the LED at 700mA as per the datasheet:
https://www.cree.com/led-components/media/documents/XLampXPE2.pdf
If I should run a CC circuit, Is there a specific IC I should be looking at?
I have found the CN5711 - I could simply pulse the CE pic and do away with the MOSFET.
Operating Voltage Range: 2.8V to 6V
On-chip Power MOSFET
Low Dropout Voltage: 0.37V @ 1.5A
LED Current up to 1.5A
Thanks!
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