Hi DD_ECA,
Frequency is a tradeoff of efficiency and solution size. Usually the higher the switching frequency, the smaller the solution size and lower efficiency. Inductor is selected based on 20%~50% ripple ratio of the full load current condition. Make…
I am designing in LTC3649 for 5-12V input to various (on same board) output voltages: 1.0, 1.8, 3.0, 3.3.
I do not have any other 100nF capacitors on this board. I am using 2.2uF 25V X5R 0402 capacitor (Murata # GRM155R61E225KE11D) as my all-around general…
Hi,
Trying to replicate LTC3649 circuit from datasheet p. 20. When powering it with no load and with no commanded voltage on TRACK pin - crcuit starts ok, but when powering with load (220 ohm res for test) and commanded 0.75V on TRACK pin - LTC3649 just…
LTC3649 how do i control the current overshoot when using current limit featuresame problem with LTM8064
Dear Power by Linear,
I've designed the LTC3649 into a medical device whose tip is connected by a cable that could be two meters long (by my estimate - my customer cannot be more exact.) A footswitch enables a relay which connects or disconnects the…
Trying to simulate downloaded LTC3649_DC2112A.asc and it gives strange result:
Just added current limit resitor 80k to limit current at 1A. At moderate loads (ie 2ohm) it works as expected. But when output is shorted (~0.1ohm) simulator shows 4A current…