This 12V DC booster circuit uses the MC34063A device which contains all the primary functions required for DC−to−DC converters. It has a built-in temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch.
It operates from 3.0 to 40.0V DC and can supply output current up to 1.5A. This booster can thus power your 12V load with a 3.7V Li-Ion battery.
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