Step-Up DC/DC Converter, output 4V, mini Vin is 0.9V, 0.37usd/pc, price is for 3pcs.
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This is a CMOS PFM-controlstep-up switching DC/DC converter with low voltage operation from Chipower. We use it for a lot of badge for festival before, which we can use common AAA battery for badges,…
Read More…This is a CMOS PFM-controlstep-up switching DC/DC converter with low voltage operation from Chipower. We use it for a lot of badge for festival before, which we can use common AAA battery for badges, e.g. Leoblinky2015 . Like the badge above, which has 48pc pink color LEDs, we can use it for 2~3nights without changing the 2XAAA batteries.
Other parts you may need to make a working circuit--
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