Jun 5, 2019 #1 M matthew-56 Newbie level 2 Joined Jun 5, 2019 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 16 hello experts we are looking for a DC DC component. Now the power supply is output is 5V from EFB-REV1 we need to step down to 3.3V since we are connecting a sensor that consumes 40mA. now i am looking for a DC DC converter component which can convert 5V to 3.3V without dissipating too much power Regards
hello experts we are looking for a DC DC component. Now the power supply is output is 5V from EFB-REV1 we need to step down to 3.3V since we are connecting a sensor that consumes 40mA. now i am looking for a DC DC converter component which can convert 5V to 3.3V without dissipating too much power Regards
Jun 5, 2019 #2 S summitville Member level 3 Joined Dec 16, 2009 Messages 54 Helped 15 Reputation 30 Reaction score 14 Trophy points 1,288 Location USA Activity points 1,668 Buck Converter
Jun 5, 2019 #3 M matthew-56 Newbie level 2 Joined Jun 5, 2019 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 16 Thanks summit can you please send me any component part number we can check if that works for us or not
Thanks summit can you please send me any component part number we can check if that works for us or not
Jun 5, 2019 #4 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,173 Helped 4,868 Reputation 9,757 Reaction score 5,541 Trophy points 1,393 Activity points 168,428 Hi, now i am looking for a DC DC converter component which can convert 5V to 3.3V without dissipating too much power Click to expand... How much power is "too much power"? 70mW (of heat) is hardly to recognize on a SMD mounted part. if 70mW is OK for you, then just use a low power (CMOS?) linear regulator. Otherwise give a useful specification. **** Almost every distributor has online selection tools Almost every DCDC converter manufacturer has online selection tools You surely don´t need us to input the values for you... Klaus
Hi, now i am looking for a DC DC converter component which can convert 5V to 3.3V without dissipating too much power Click to expand... How much power is "too much power"? 70mW (of heat) is hardly to recognize on a SMD mounted part. if 70mW is OK for you, then just use a low power (CMOS?) linear regulator. Otherwise give a useful specification. **** Almost every distributor has online selection tools Almost every DCDC converter manufacturer has online selection tools You surely don´t need us to input the values for you... Klaus
Jun 5, 2019 #5 schmitt trigger Advanced Member level 5 Joined Apr 17, 2013 Messages 2,725 Helped 859 Reputation 1,722 Reaction score 850 Trophy points 1,393 Activity points 18,445 The easiest and cheapest: An LDO, like the very popular LD1117 V33. On the opposite end of the spectrum there are synchronous switch-mode buck regulators, made by many semiconductor manufacturers. With only 40 mA and a 1.7 volt overhead, the power loss might be low enough to be acceptable, so perhaps the latter solution is an overkill.
The easiest and cheapest: An LDO, like the very popular LD1117 V33. On the opposite end of the spectrum there are synchronous switch-mode buck regulators, made by many semiconductor manufacturers. With only 40 mA and a 1.7 volt overhead, the power loss might be low enough to be acceptable, so perhaps the latter solution is an overkill.
Jun 5, 2019 #6 E Easy peasy Advanced Member level 6 Joined Aug 15, 2015 Messages 4,747 Helped 1,402 Reputation 2,804 Reaction score 1,933 Trophy points 1,393 Location Melbourne Activity points 26,228 search ali express ...
Jun 8, 2019 #7 T treez Guest if you want you can use an RT6208 based buck converter. The datasheet tells you how to set it up.