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User talk:Daveb: Difference between revisions
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→Voltage regulator for the MCU
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MCU Vcc of 2.5V (max clock of 8Mhz) | MCU Vcc of 2.5V (max clock of 8Mhz) | ||
* [http://uk.farnell.com/linear-technology/lt1761es5-2-5-pbf/ic-ldo-volt-reg-2-5v-0-1a-5-tsot/dp/1531492 a 2.5V, 300mV drop out, 100mA, 20V max power supply] will allow operation at 2.8V:). | * [http://uk.farnell.com/linear-technology/lt1761es5-2-5-pbf/ic-ldo-volt-reg-2-5v-0-1a-5-tsot/dp/1531492 a 2.5V, 300mV drop out, 100mA, 20V max power supply] will allow operation at 2.8V:). | ||
Adjustable voltage regulators seem like they offer the voltage reqd (order of 2.5 to 2.7V) at acceptable dropout voltages - order of 0.3V. But the fine print is hard to follow, so far I have investigated two families to find they have secondary voltage requirments above 4V; | |||
* [http://uk.farnell.com/linear-technology/lt3080est-pbf/ic-adj-ldo-reg-0v-to-36v-1-1a-sot/dp/1556601 LT3080EST three pin regulator] requires a source voltage > 1.25V higher than output although Farnel calls it a 350mV dropout :(. | |||
This guy is just plain confusing.. talking of stable zones of operation, and with about 10 extra components in the application circuit with little guidance for selection... | |||
* [http://uk.farnell.com/on-semiconductor/lm2931ctg/v-reg-ldo-adj-3-24v-2931-to2205/dp/1211139 LM2931CTG automotive volt regulator] | |||
* [ | |||
* [http://uk.farnell.com/on-semiconductor/lm2931ctg/v-reg-ldo-adj-3-24v-2931-to2205/dp/1211139 | |||
==Diodes for rectifying AC == | ==Diodes for rectifying AC == | ||
