High efficiency battery boost regulator using the MCP1640

in LEDs by DP | 5 comments

High_Efficiency_Battery_Boost_Regulator_20-W600

Giorgos over at PCBheaven made a MCP1640 boost converter for his camping LED light project. It’s designed to squeeze every last bit of energy from the batteries.

What i want now, is something to spice up this hack. So here is what – I used the MCP1640 boost converter to drain the last electron from the batteries. This chip can work with a ridiculous low voltage and provide enough power to drive a couple LEDs. Which means the 2 AA batteries will operate even longer and the LEDs will be much brighter.

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Comments

  1. r4k says:

    With so many dedicated LED drivers (constant current) on the market today, why would you want to go with a generic voltage regulator?

  2. Garrett says:

    because this seams like it could be used with other projects without hassle, if its geared at LEDs only, then that speaks for itself, this looks like a “proof of concept” display of the circuit working in action [at least to me]

  3. r4k says:

    Because LEDs should always be driven constant current, not constant voltage.

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