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Author Topic: Outdoor solar powered LED garden lamp / Tear down.  (Read 39037 times)

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Offline Kiriakos GR

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Outdoor solar powered LED QXS521 Tear down
« Reply #10 on: July 07, 2018, 06:02:11 PM »
I came across a solar powered toy this operating with QXS521 controller.

Unfortunately QXS521 controller this is restricted to handle 1.5 Volt battery and voltage output.
There is no hope converting this so to handle several brighter 2.8V LED.
It can only power up a single LED due it current limitations, output this is square wave at 160KHz at 1.8V Max

Very specific toy this is terrible as lights source but still it is good enough as gadget to impress an five years old baby.
Internal battery this is Ni-mh 1.2V 40mA.   

Working voltage: 0.7V~1.5V
 Input current: 1.2V / 22mA (47uH)
 Input current: 1.2V / 16mA (68uH)
 High efficiency: 84%
 Internal integrated light switch
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