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1/60 f/5.6 10.2 mm ISO 80

PENTAX Corporation PENTAX Optio S5z

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electronics
LED driver
boost converter
MSOP10
LT1618


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Step-up converter with LT1618

Step-up converter with LT1618
The current sensing resistor is still missing as I couldn't find 0.22Ω anywhere, but the chip also has adjustable output voltage support. I just measured the LED current and adjusted the voltage. That's not the right way, but this was an "emergency build" ;-)

Edit: The [expletive deleted] chip is dead !

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